Added a first version of a new inspection that tries to detect bogus uses of return statements in test methods and replaces them by assumeThat() calls. Removed oraclejdk8 from travis-ci. Added custom Jupiter DisplayNameGenerator for user friendly test names in report. Extended documentation. Removed Playground.

Renamed a few inspections to better/shorter names (and fixed file and directory names accordingly).

.travis.yml

@@ -0,0 +1,10 @@
+language: java
+jdk:
+  - openjdk8
+
+before_script:
+  - chmod +x gradlew
+  - chmod +x gradle/wrapper/gradle-wrapper.jar
+
+script:
+  - ./gradlew clean test jacocoTestReport coveralls

README.md

@@ -1,15 +1,17 @@
-# Cajon - Concise AssertJ Optimizing Nitpicker
+# Cajon - Concise AssertJ Optimizing Nitpicker [![Build Status](https://travis-ci.org/chrisly42/cajon-plugin.svg?branch=master)](https://travis-ci.org/chrisly42/cajon-plugin) [![Coverage Status](https://coveralls.io/repos/github/chrisly42/cajon-plugin/badge.svg?branch=master)](https://coveralls.io/github/chrisly42/cajon-plugin?branch=master)
 
-Cajon is an IntelliJ IDEA Plugin for shortening and optimizing AssertJ assertions.
+Cajon is an IntelliJ IDEA Plugin for shortening and optimizing [AssertJ](https://assertj.github.io/doc/) assertions.
 
-## Why?
+## Purpose
 
 First, code is easier to read, when it is concise and reflects the intention clearly.
 AssertJ has plenty of different convenience methods that describing various intentions precisely.
 Why write longer, more complex code that can be expressed in brevity?
 
-Second, AssertJ is able to output more meaningful descriptions when an assertion fails.
+Second, when using the available special assertion methods of AssertJ, a failure of a condition
+can be expressed in better detail and with more meaningful descriptions.
 This makes finding bugs and fixing failed tests more efficient.
+Nobody likes to read failures of the kind "failed because true is not false".
 
 For example:
 
@@ -50,12 +52,44 @@ The plugin will report inspections in your opened editor file as warnings.
 You can then quick-fix these with your quick-fix hotkey (usually Alt-Return or Opt-Return).
 
 Or, you can use the "Run Inspection by Name..." action to run one inspection on a bigger scope (e.g. the whole project).
+Applying a quick fix might result in further optimization possibilities, so 
+you might need to perform a couple of fixes before you get to the final result.
+
+Check out this example where every line represents the result after a Cajon quickfix:
+```
+assertFalse(!(array.length == collection.size()));
+
+assertThat(!(array.length == collection.size())).isFalse();
+
+assertThat(array.length == collection.size()).isTrue();
+
+assertThat(array.length).isEqualTo(collection.size());
+
+assertThat(array).hasSameSizeAs(collection);
+```
 
 You can toggle the various inspections in the Settings/Editor/Inspections in the AssertJ group.
 
-## Implemented inspections
+## Implemented inspections and quickfixes
+
+- JoinAssertThatStatements
+  
+  Joins multiple ```assertThat()``` statements with same actual expression together.
+
+  ```
+  from: assertThat(expected).someCondition();
+        assertThat(expected).anotherCondition();
+    to: assertThat(expected).someCondition().anotherCondition();
+  ```
+  Joining will work on actual expressions inside assertThat() that are equivalent expressions,
+  except for method calls with known side-effect methods such as ```Iterator.next()``` -- please notify me about others.
+
+  The comments of the statements will be preserved. When using ```.extracting()``` or similar, the statements will not be merged.
 
 - AssertThatObjectIsNullOrNotNull
+
+  Uses ```isNull()``` and ```isNotNull()``` instead.
+
   ```
   from: assertThat(object).isEqualTo(null);
     to: assertThat(object).isNull();
@@ -64,26 +98,91 @@ You can toggle the various inspections in the Settings/Editor/Inspections in the
     to: assertThat(object).isNotNull();
   ```
 
-- AssertThatBooleanIsTrueOrFalse
+- AssertThatBooleanCondition
+
+  Uses ```isTrue()``` and ```isFalse()``` instead.
+
   ```
   from: assertThat(booleanValue).isEqualTo(true/false/Boolean.TRUE/Boolean.FALSE);  
     to: assertThat(booleanValue).isTrue()/isFalse();
   ```
 
+- AssertThatInvertedBooleanCondition
+
+  Inverts the boolean condition to make it more readable.
+  
+  ```
+  from: assertThat(!booleanValue).isEqualTo(true/false/Boolean.TRUE/Boolean.FALSE);  
+  from: assertThat(!booleanValue).isTrue()/isFalse();  
+    to: assertThat(booleanValue).isFalse()/isTrue();
+  ```
+
+- AssertThatInstanceOf
+
+  Moves ```instanceof``` expressions out of ```assertThat()```.
+  
+  ```
+  from: assertThat(object instanceof classname).isEqualTo(true);
+  from: assertThat(object instanceof classname).isTrue();
+    to: assertThat(object).isInstanceOf(classname.class);
+
+  from: assertThat(object instanceof classname).isEqualTo(false);
+  from: assertThat(object instanceof classname).isFalse();
+    to: assertThat(object).isNotInstanceOf(classname.class);
+  ```
+
 - AssertThatStringIsEmpty
+
+  Uses ```isEmpty()``` for empty string assertions.
+
   ```
   from: assertThat(charSequence/string).isEqualTo("");
   from: assertThat(charSequence/string).hasSize(0);
     to: assertThat(charSequence/string).isEmpty();
   ```
 
+  The ```assertThat(string.length()).isEqualTo(0);``` case is handled in the AssertThatSize inspection.
+
+- AssertThatStringExpression
+  
+  Moves string operations inside assertThat() out.
+  
+  ```
+  from: assertThat(stringActual.isEmpty()).isTrue();
+    to: assertThat(stringActual).isEmpty();
+
+  from: assertThat(stringActual.equals(stringExpected)).isTrue();
+  from: assertThat(stringActual.contentEquals(charSeqExpected)).isTrue();
+    to: assertThat(stringActual).isEqualTo(stringExpected);
+
+  from: assertThat(stringActual.equalsIgnoreCase(stringExpected)).isTrue();
+    to: assertThat(stringActual).isEqualToIgnoringCase(stringExpected);
+
+  from: assertThat(stringActual.contains(stringExpected)).isTrue();
+    to: assertThat(stringActual).contains(stringExpected);
+
+  from: assertThat(stringActual.startsWith(stringExpected)).isTrue();
+    to: assertThat(stringActual).startsWith(stringExpected);
+
+  from: assertThat(stringActual.endsWith(stringExpected)).isTrue();
+    to: assertThat(stringActual).endsWith(stringExpected);
+  ```
+  Analogously with ```isFalse()```.
+
 - AssertThatEnumerableIsEmpty
+
+  Uses ```isEmpty()``` for ```hasSize(0)``` iterable assertions instead.
+  
   ```
   from: assertThat(enumerable).hasSize(0);
     to: assertThat(enumerable).isEmpty();
   ```
 
 - AssertThatSize
+
+  Makes assertions on sizes of arrays, collections, strings, 
+  or ```CharSequence```s more concise.
+
   ```
   from: assertThat(array.length).isEqualTo(0);
   from: assertThat(array.length).isLessThanOrEqualTo(0);
@@ -98,9 +197,12 @@ You can toggle the various inspections in the Settings/Editor/Inspections in the
 
   from: assertThat(array.length).isEqualTo(anotherArray.length);
     to: assertThat(array).hasSameSizeAs(anotherArray);
+    
+  from: assertThat(array).hasSize(anotherArray.length);
+    to: assertThat(array).hasSameSizeAs(anotherArray);
   ```
 
-  with AssertJ 13.2.0 or higher
+  and additionally with AssertJ 13.2.0 or later
 
   ```
   from: assertThat(array.length).isLessThanOrEqualTo(expression);
@@ -115,9 +217,23 @@ You can toggle the various inspections in the Settings/Editor/Inspections in the
   from: assertThat(array.length).isGreaterThanOrEqualTo(expression);
     to: assertThat(array).hasSizeGreaterThanOrEqualTo(expression);
   ```
-  and analogously for collections...
+  and analogously for collections, strings and CharSequences, e.g:
+
+  ```
+  from: assertThat("string".length()).isLessThan(1);
+    to: assertThat("string").isEmpty();
+
+  from: assertThat("string".length()).isEqualTo(collection.size())
+    to: assertThat("string").hasSameSizeAs(collection);
+    
+  from: assertThat("string".length()).hasSize("strong".length())
+    to: assertThat("string").hasSameSizeAs("strong");
+  ```
+
+- AssertThatBinaryExpression
+
+  Splits a boolean condition represented by binary expression out of ```assertThat()```.
 
-- AssertThatBinaryExpressionIsTrueOrFalse
   ```
   from: assertThat(primActual == primExpected).isTrue();
     to: assertThat(primActual).isEqualTo(primExpected);
@@ -130,10 +246,18 @@ You can toggle the various inspections in the Settings/Editor/Inspections in the
 
   from: assertThat(null == objActual).isFalse();
     to: assertThat(objActual).isNotNull();
+
+  from: assertThat(objActual.equals(objExpected).isTrue();
+    to: assertThat(objActual).isEqualTo(objExpected);
   ```
   ...and many, many more combinations (more than 150).
 
 - AssertThatJava8Optional
+
+  Examines the statement for Java 8 Optional type and whether the statement
+  effectively tries to assert the presence, absence or content and then 
+  replaces the statement by better assertions.
+  
   ```
   from: assertThat(opt.isPresent()).isEqualTo(true);
   from: assertThat(opt.isPresent()).isNotEqualTo(false);
@@ -162,35 +286,12 @@ You can toggle the various inspections in the Settings/Editor/Inspections in the
     to: assertThat(opt).isPresent();
   ```
 
-- JUnitAssertToAssertJ
-  ```
-  assertTrue(condition);
-  assertTrue(message, condition);
-  assertFalse(condition);
-  assertFalse(message, condition);
-  assertNull(object);
-  assertNull(message, object);
-  assertNonNull(object);
-  assertNonNull(message, object);
-  assertEquals(expected, actual);
-  assertEquals(message, expected, actual);
-  assertEquals(expectedDoubleOrFloat, actualDoubleOrFloat, delta);
-  assertEquals(message, expectedDoubleOrFloat, actualDoubleOrFloat, delta);
-  assertNotEquals(unexpected, actual);
-  assertNotEquals(message, unexpected, actual);
-  assertNotEquals(unexpectedDoubleOrFloat, actualDoubleOrFloat, delta);
-  assertNotEquals(message, unexpectedDoubleOrFloat, actualDoubleOrFloat, delta);
-  assertSame(expected, actual);
-  assertSame(message, expected, actual);
-  assertNotSame(unexpected, actual);
-  assertNotSame(message, unexpected, actual);
-  assertArrayEquals(expected, actual);
-  assertArrayEquals(message, expectedArray, actualArray);
-  assertArrayEquals(expectedDoubleOrFloatArray, actualDoubleOrFloatArray, delta);
-  assertArrayEquals(message, expectedDoubleOrFloatArray, actualDoubleOrFloatArray, delta);
-  ```
-  
 - AssertThatGuavaOptional
+
+  Examines the statement for Google Guava Optional type and whether the statement
+  effectively tries to assert the presence, absence or content and then 
+  replaces the statement by better assertions.
+
   ```
   from: assertThat(opt.isPresent()).isEqualTo(true);
   from: assertThat(opt.isPresent()).isNotEqualTo(false);
@@ -218,11 +319,86 @@ You can toggle the various inspections in the Settings/Editor/Inspections in the
 
   AssertJ for Guava needs to be available in the classpath.
 
+- AssumeThatInsteadOfReturn
+
+  Tries to detect bogus uses of return statements in test methods and replaces them by ```assumeThat()``` calls.
+  
+  Novices will use these to skip test execution by bailing out early on some preconditions not met.
+  However, this suggests that the test has actually been run and passed instead of showing the test
+  as being skipped.
+
+  Return statements in ```if``` statements in main test methods (must be annotated with JUnit 4 or 
+  Jupiter @Test annotations) will be verified to have at least one ```assertThat()``` statement in the code flow.
+  Method calls within the same class will be examined for ```assertThat()``` statements, too.
+  However, at most 50 statements and down to five recursions will be tolerated before giving up.
+  
+  Currently, the quickfix may lose some comments during operation. The other branch of the ```if``` statement
+  will be inlined (blocks with declarations will remain a code block due to variable scope).
+  
+  The generated ```assumeThat()``` statement could be optimized further (similar to ```assertThat()```).
+
+  Example:
+  
+  ```
+      @Test
+      public void check_fuel_emission() {
+          if (System.getProperty("manufacturer").equals("Volkswagen")) {
+              return;
+          }
+          double nitroxppm = doWltpDrivingCycle();
+          assertThat(nitroxppm).isLessThan(500.0);
+      }
+  ```
+  will be transformed to
+  ```
+      @Test
+      public void check_fuel_emission() {
+          assumeThat(System.getProperty("manufacturer").equals("Volkswagen")).isFalse();
+          double nitroxppm = doWltpDrivingCycle();
+          assertThat(nitroxppm).isLessThan(500.0);
+      }
+  ```
+
+- JUnitAssertToAssertJ
+
+  Tries to convert most of the JUnit 4 assertions to AssertJ format.
+
+  Does not support Hamcrest-Matchers.
+  If you need that kind of conversion, you might want to check out the
+  [Assertions2AssertJ plugin](https://plugins.jetbrains.com/plugin/10345-assertions2assertj) by Ric Emery.
+  
+  ```
+  assertTrue(condition);
+  assertTrue(message, condition);
+  assertFalse(condition);
+  assertFalse(message, condition);
+  assertNull(object);
+  assertNull(message, object);
+  assertNonNull(object);
+  assertNonNull(message, object);
+  assertEquals(expected, actual);
+  assertEquals(message, expected, actual);
+  assertEquals(expectedDoubleOrFloat, actualDoubleOrFloat, delta);
+  assertEquals(message, expectedDoubleOrFloat, actualDoubleOrFloat, delta);
+  assertNotEquals(unexpected, actual);
+  assertNotEquals(message, unexpected, actual);
+  assertNotEquals(unexpectedDoubleOrFloat, actualDoubleOrFloat, delta);
+  assertNotEquals(message, unexpectedDoubleOrFloat, actualDoubleOrFloat, delta);
+  assertSame(expected, actual);
+  assertSame(message, expected, actual);
+  assertNotSame(unexpected, actual);
+  assertNotSame(message, unexpected, actual);
+  assertArrayEquals(expected, actual);
+  assertArrayEquals(message, expectedArray, actualArray);
+  assertArrayEquals(expectedDoubleOrFloatArray, actualDoubleOrFloatArray, delta);
+  assertArrayEquals(message, expectedDoubleOrFloatArray, actualDoubleOrFloatArray, delta);
+  ```
+
 ### Implemented referencing
 
   ```
   .extracting("field")
-  .extracting("outerfield.fieldInsideObjectTypeOfOuterfield.andSoOn")
+  .extracting("outerField.fieldInsideObjectTypeOfOuterField.andSoOn")
   .extracting("property") // where the class has a getProperty() (or isProperty() for boolean) method
   .extracting("bareMethod") // supported with AssertJ 13.12.0
   .extracting(Extractors.byName("fieldOrPropertyOrBareMethod")
@@ -234,42 +410,54 @@ You can toggle the various inspections in the Settings/Editor/Inspections in the
   .flatExtracting(Extractors.resultOf("bareMethod")
   ```
   Works on both POJOs and ```Iterable```s/```Array```s. 
+  Implementation is very basic though and does not work with fancy cascaded .extracting() sequences.
+  If there's demand, I will add it.
 
 ## Development notice
 
 Cajon is written in Kotlin 1.3.
 
 Cajon is probably the only plugin that uses JUnit 5 Jupiter for unit testing so far (or at least the only one that I'm aware of ;) ).
-The IntelliJ framework actually uses the JUnit 3 TestCase for plugin testing and I took me quite a while to make it work with JUnit 5.
+The IntelliJ framework actually uses the JUnit 3 TestCase for plugin testing and it took me quite a while to make it work with JUnit 5.
 Feel free to use the code (in package de.platon42.intellij.jupiter) for your projects (with attribution).
 
-## TODO
-- AssertThatNegatedBooleanExpression
-- AssertThatInstanceOf
-- AssertThatStringOps
-  ```
-  from: assertThat(string.contains(foobar)).isTrue();
-    to: assertThat(string).contains(foobar);
-  from: assertThat(string.startsWith(foobar)).isTrue();
-    to: assertThat(string).startsWith(foobar);
-  from: assertThat(string.endsWith(foobar)).isTrue();
-    to: assertThat(string).endsWith(foobar);
-  from: assertThat(string.equalsIgnoreCase(foobar)).isTrue();
-    to: assertThat(string).isEqualToIgnoringCase(foobar);
-  ```
-  Analogously with ```isFalse()```.
-  
-- AssumeInsteadOfReturn
+## Planned features
 - Extraction with property names to lambda with Java 8
   ```
   from: assertThat(object).extracting("propOne", "propNoGetter", "propTwo.innerProp")...
     to: assertThat(object).extracting(type::getPropOne, it -> it.propNoGetter, it -> it.getPropTwo().getInnerProp())...
   ```
-- Kotlin support
+
+- Kotlin support (right now, however, with less than 100 downloads after a month, this is unlikely to happen)
 
 ## Changelog
 
-#### V0.5 (13-Apr-19)
+#### V0.8 (05-May-19)
+- Fixed missing description for JoinAssertThatStatements and detection of equivalent expressions (sorry, released it too hastily).
+- Fixed ```isEmpty()``` for enumerables and strings and ```isNull()``` for object conversions to be applied only if it is the terminal method call as ```isEmpty()``` and ```isNull()``` return void.
+- Heavily reworked inspections for edge cases, such as multiple ```isEqualTo()``` calls inside a single statement.
+- Some inspections could generate bogus code for weird situations, this has been made more fool-proof.
+- Corrected highlighting for many inspections.
+- Fixed family names for inspections in batch mode.
+- Reworded many inspection messages for better understanding.
+- Added a first version of a new inspection that tries to detect bogus uses of return statements in test methods and replaces them by ```assumeThat()``` calls.
+
+#### V0.7 (28-Apr-19)
+- Another fix for AssertThatGuavaOptional inspection regarding using the same family name for slightly different quick fix executions
+  (really, Jetbrains, this sucks for no reason).
+- Extended AssertThatSize inspection to transform ```hasSize()``` into ```hasSameSizeAs()```, if possible.
+- Implemented first version of JoinAssertThatStatements inspection that will try to merge ```assertThat()``` statements with the same
+  actual object together, preserving comments.
+
+#### V0.6 (22-Apr-19)
+- New AssertThatStringExpression inspection that will move ```isEmpty()```, ```equals()```, ```equalsIgnoreCase()```, ```contains()```,
+  ```startsWith()```, and ```endsWith()``` out of actual expression.
+- Extended AssertThatSize inspection to take ```String```s and ```CharSequences``` into account, too.
+- New AssertThatInvertedBooleanCondition inspection that will remove inverted boolean expressions inside ```assertThat()```.
+- Renamed a few inspections to better/shorter names.
+- New AssertThatInstanceOf inspection that moves instanceof expressions out of ```assertThat()```.
+
+#### V0.5 (18-Apr-19)
 - Fixed incompatibility with IDEA versions < 2018.2 (affected AssertThatSizeInspection). Minimal version is now 2017.3.
 - Fixed missing Guava imports (if not already present) for AssertThatGuavaInspection. This was a major PITA to get right.
 - Added support for referencing and refactoring inside ```.extracting()``` methods with fields, properties and methods (though

build.gradle

@@ -1,11 +1,13 @@
 plugins {
     id 'java'
-    id 'org.jetbrains.intellij' version '0.4.3'
-    id 'org.jetbrains.kotlin.jvm' version '1.3.30'
+    id 'org.jetbrains.intellij' version '0.4.8'
+    id 'org.jetbrains.kotlin.jvm' version '1.3.31'
+    id 'jacoco'
+    id 'com.github.kt3k.coveralls' version '2.8.2'
 }
 
 group 'de.platon42'
-version '0.5'
+version '0.8'
 
 repositories {
     mavenCentral()
@@ -33,44 +35,52 @@ compileTestKotlin {
     kotlinOptions.jvmTarget = "1.8"
 }
 intellij {
-    version '2019.1'
+    version '2019.1.1'
 //    pluginName 'Concise AssertJ Optimizing Nitpicker (Cajon)'
     updateSinceUntilBuild false
 }
 
 patchPluginXml {
     changeNotes """
-  <h4>V0.5 (18-Apr-19)</h4>
+  <h4>V0.8 (05-May-19)</h4>
     <ul>
-      <li>Fixed incompatibility with IDEA versions < 2018.2 (affected AssertThatSizeInspection). Minimal version is now 2017.3.
-      <li>Fixed missing Guava imports (if not already present) for AssertThatGuavaInspection. This was a major PITA to get right.
-      <li>Added support for referencing and refactoring inside .extracting() methods with fields, properties and methods (though
-      getter renaming does not work that perfect, but I'm giving up for now as the IntelliJ SDK docs are seriously lacking).
-      <li>Fixed an exception in batch mode if the description string was the same but for different fixes. 
-          Now descriptions are different for quick fixes triggered by AssertThatJava8OptionalInspection and AssertThatGuavaOptionalInspection.
+      <li>Fixed missing description for JoinAssertThatStatements and detection of equivalent expressions (sorry, released it too hastily).
+      <li>Fixed isEmpty() for enumerables and strings and isNull() for object conversions to be applied only if it is the terminal method call as isEmpty() and isNull() return void.
+      <li>Heavily reworked inspections for edge cases, such as multiple isEqualTo() calls inside a single statement.
+      <li>Some inspections could generate bogus code for weird situations, this has been made more fool-proof.
+      <li>Corrected highlighting for many inspections.
+      <li>Fixed family names for inspections in batch mode.
+      <li>Reworded many inspection messages for better understanding.
+      <li>Added a first version of a new inspection that tries to detect bogus uses of return statements in test methods and replaces them by assumeThat() calls.
     </ul>
-  <h4>V0.4 (11-Apr-19)</h4>
+  <h4>V0.7 (28-Apr-19)</h4>
     <ul>
-      <li>Reduced minimal supported IDEA version from 2018.2 to 2017.2.
-      <li>New inspection AssertThatJava8Optional that operates on Java 8 Optional objects and tries to use contains(), containsSame(), isPresent(), and isNotPresent() instead.
-      <li>New inspection AssertThatGuavaOptional that operates on Guava Optional objects and tries to use contains(), isPresent(), and isAbsent() instead.
-      <li>Added support in AssertThatBinaryExpressionIsTrueOrFalse for is(Not)EqualTo(Boolean.TRUE/FALSE).
-    </ul>
-  <h4>V0.3 (07-Apr-19)</h4>
-    <ul>
-      <li>New inspection AssertThatBinaryExpressionIsTrueOrFalse that will find and fix common binary expressions and equals() statements (more than 150 combinations) inside assertThat().
-      <li>Merged AssertThatObjectIsNull and AssertThatObjectIsNotNull to AssertThatObjectIsNullOrNotNull.
-      <li>Support for hasSizeLessThan(), hasSizeLessThanOrEqualTo(), hasSizeGreaterThanOrEqualTo(), and hasSizeGreaterThan() for AssertThatSizeInspection (with AssertJ >=13.2.0).
-      <li>Really fixed highlighting for JUnit conversion. Sorry.
+      <li>Another fix for AssertThatGuavaOptional inspection regarding using the same family name for slightly different quick fix executions
+          (really, Jetbrains, this sucks for no reason).
+      <li>Extended AssertThatSize inspection to transform hasSize() into hasSameSizeAs(), if possible.
+      <li>Implemented first version of JoinAssertThatStatements inspection that will try to merge assertThat() statements with the same
+          actual object together, preserving comments.
     </ul>
+  <p>Full changelog available at <a href="https://github.com/chrisly42/cajon-plugin#changelog">Github project site</a>.</p>
 """
 }
 
 test {
     useJUnitPlatform()
-//    testLogging {
-//        events "passed", "skipped", "failed"
-//    }
+    testLogging {
+        events "passed", "skipped", "failed"
+    }
+}
+
+jacoco {
+    toolVersion = '0.8.3'
+}
+
+jacocoTestReport {
+    reports {
+        xml.enabled true
+        csv.enabled false
+    }
 }
 
 publishPlugin {

src/main/java/de/platon42/intellij/plugins/cajon/AssertJClassNames.kt

@@ -7,6 +7,16 @@ class AssertJClassNames {
         @NonNls
         const val ASSERTIONS_CLASSNAME = "org.assertj.core.api.Assertions"
 
+        @NonNls
+        const val ASSUMPTIONS_CLASSNAME = "org.assertj.core.api.Assumptions"
+
+        @NonNls
+        const val DESCRIPTABLE_INTERFACE = "org.assertj.core.api.Descriptable"
+        @NonNls
+        const val EXTENSION_POINTS_INTERFACE = "org.assertj.core.api.ExtensionPoints"
+
+        @NonNls
+        const val ASSERT_INTERFACE = "org.assertj.core.api.Assert"
         @NonNls
         const val ABSTRACT_ASSERT_CLASSNAME = "org.assertj.core.api.AbstractAssert"
         @NonNls
@@ -32,7 +42,5 @@ class AssertJClassNames {
         const val GUAVA_OPTIONAL_CLASSNAME = "com.google.common.base.Optional"
         @NonNls
         const val GUAVA_ASSERTIONS_CLASSNAME = "org.assertj.guava.api.Assertions"
-        @NonNls
-        const val GUAVA_OPTIONAL_ASSERT_CLASSNAME = "org.assertj.guava.api.OptionalAssert"
     }
 }

src/main/java/de/platon42/intellij/plugins/cajon/CommonMatchers.kt

@@ -0,0 +1,38 @@
+package de.platon42.intellij.plugins.cajon
+
+import com.intellij.psi.CommonClassNames
+import com.siyeh.ig.callMatcher.CallMatcher
+
+val CORE_ASSERT_THAT_MATCHER = CallMatcher.staticCall(AssertJClassNames.ASSERTIONS_CLASSNAME, MethodNames.ASSERT_THAT)!!
+val GUAVA_ASSERT_THAT_MATCHER = CallMatcher.staticCall(AssertJClassNames.GUAVA_ASSERTIONS_CLASSNAME, MethodNames.ASSERT_THAT)!!
+val ALL_ASSERT_THAT_MATCHERS = CallMatcher.anyOf(CORE_ASSERT_THAT_MATCHER, GUAVA_ASSERT_THAT_MATCHER)!!
+
+val EXTRACTING_FROM_OBJECT = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_OBJECT_ASSERT_CLASSNAME, "extracting")!!
+val EXTRACTING_FROM_ITERABLE = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_ITERABLE_ASSERT_CLASSNAME, "extracting")!!
+val FLAT_EXTRACTING_FROM_ITERABLE = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_ITERABLE_ASSERT_CLASSNAME, "flatExtracting")!!
+val EXTRACTING_RESULT_OF_FROM_ITERABLE = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_ITERABLE_ASSERT_CLASSNAME, "extractingResultOf")!!
+
+val EXTRACTING_CALL_MATCHERS = CallMatcher.anyOf(
+    EXTRACTING_FROM_OBJECT,
+    EXTRACTING_FROM_ITERABLE,
+    FLAT_EXTRACTING_FROM_ITERABLE,
+    EXTRACTING_RESULT_OF_FROM_ITERABLE
+)!!
+
+val DESCRIBED_AS = CallMatcher.instanceCall(AssertJClassNames.DESCRIPTABLE_INTERFACE, MethodNames.DESCRIBED_AS, MethodNames.AS)!!
+val WITH_REPRESENTATION_AND_SUCH = CallMatcher.instanceCall(AssertJClassNames.ASSERT_INTERFACE, "withRepresentation", "withThreadDumpOnError")!!
+val USING_COMPARATOR = CallMatcher.instanceCall(AssertJClassNames.ASSERT_INTERFACE, "usingComparator", "usingDefaultComparator")!!
+val IN_HEXADECIMAL_OR_BINARY = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_ASSERT_CLASSNAME, MethodNames.IN_HEXADECIMAL, MethodNames.IN_BINARY)!!
+val EXTENSION_POINTS = CallMatcher.instanceCall(AssertJClassNames.EXTENSION_POINTS_INTERFACE, "is", "isNot", "has", "doesNotHave", "satisfies")!!
+
+val NOT_ACTUAL_ASSERTIONS = CallMatcher.anyOf(
+    ALL_ASSERT_THAT_MATCHERS,
+    DESCRIBED_AS,
+    WITH_REPRESENTATION_AND_SUCH,
+    USING_COMPARATOR,
+    IN_HEXADECIMAL_OR_BINARY
+)!!
+
+val KNOWN_METHODS_WITH_SIDE_EFFECTS = CallMatcher.anyOf(
+    CallMatcher.instanceCall(CommonClassNames.JAVA_UTIL_ITERATOR, "next")
+)!!

src/main/java/de/platon42/intellij/plugins/cajon/Extensions.kt

@@ -1,39 +1,76 @@
 package de.platon42.intellij.plugins.cajon
 
+import com.intellij.lang.jvm.JvmModifier
 import com.intellij.psi.*
 import com.intellij.psi.codeStyle.CodeStyleManager
 import com.intellij.psi.codeStyle.JavaCodeStyleManager
 import com.intellij.psi.util.PsiTreeUtil
+import com.intellij.psi.util.PsiUtil
+import com.siyeh.ig.callMatcher.CallMatcher
+import de.platon42.intellij.plugins.cajon.inspections.AbstractAssertJInspection
 
-val PsiMethodCallExpression.qualifierExpression: PsiExpression get() = this.methodExpression.qualifierExpression!!
-val PsiMethodCallExpression.firstArg: PsiExpression get() = this.argumentList.expressions[0]!!
+val PsiMethodCallExpression.qualifierExpression: PsiExpression get() = methodExpression.qualifierExpression!!
+val PsiMethodCallExpression.firstArg: PsiExpression get() = getArg(0)
+
+fun PsiElement.hasAssertThat(): Boolean {
+    val elementText = text
+    return elementText.startsWith("${MethodNames.ASSERT_THAT}(") || elementText.contains(".${MethodNames.ASSERT_THAT}(")
+}
 
 fun PsiMethodCallExpression.replaceQualifier(qualifier: PsiElement) {
-    this.qualifierExpression.replace(qualifier)
+    qualifierExpression.replace(qualifier)
 }
 
 fun PsiMethodCallExpression.replaceQualifierFromMethodCall(oldMethodCall: PsiMethodCallExpression) {
-    this.qualifierExpression.replace(oldMethodCall.qualifierExpression)
+    qualifierExpression.replace(oldMethodCall.qualifierExpression)
 }
 
 fun PsiElement.findOutmostMethodCall(): PsiMethodCallExpression? {
-    val statement = PsiTreeUtil.getParentOfType(this, PsiStatement::class.java) ?: return null
+    val statement = PsiTreeUtil.getParentOfType(this, PsiStatement::class.java, false) ?: return null
     return PsiTreeUtil.findChildOfType(statement, PsiMethodCallExpression::class.java)
 }
 
-fun PsiMethodCallExpression.getArg(n: Int): PsiExpression = this.argumentList.expressions[n]
+fun PsiElement.findStaticMethodCall(): PsiMethodCallExpression? {
+    var elem: PsiElement? = this
+    while (elem != null) {
+        if ((elem is PsiMethodCallExpression) && (elem.resolveMethod()?.hasModifier(JvmModifier.STATIC) == true)) {
+            return elem
+        }
+        elem = elem.firstChild
+    }
+    return null
+}
+
+fun PsiElement.gatherAssertionCalls(): List<PsiMethodCallExpression> {
+    val assertThatMethodCall = findStaticMethodCall() ?: return emptyList()
+    return assertThatMethodCall.collectMethodCallsUpToStatement()
+        .filterNot { NOT_ACTUAL_ASSERTIONS.test(it) }
+        .toList()
+}
+
+fun PsiMethodCallExpression.collectMethodCallsUpToStatement(): Sequence<PsiMethodCallExpression> {
+    return generateSequence(this) { PsiTreeUtil.getParentOfType(it, PsiMethodCallExpression::class.java, true, PsiStatement::class.java) }
+}
+
+fun PsiMethodCallExpression.findFluentCallTo(matcher: CallMatcher): PsiMethodCallExpression? {
+    return collectMethodCallsUpToStatement().find { matcher.test(it) }
+}
+
+fun PsiMethodCallExpression.getArg(n: Int): PsiExpression = PsiUtil.skipParenthesizedExprDown(argumentList.expressions[n])!!
+
+fun PsiMethodCallExpression.getArgOrNull(n: Int): PsiExpression? = argumentList.expressions.getOrNull(n)
 
 fun <T> Boolean.map(forTrue: T, forFalse: T) = if (this) forTrue else forFalse
 
 fun PsiMethod.addAsStaticImport(context: PsiElement, vararg allowedClashes: String) {
     val factory = JavaPsiFacade.getElementFactory(context.project)
-    val methodName = this.name
-    val containingClass = this.containingClass ?: return
+    val methodName = name
+    val containingClass = containingClass ?: return
     val importList = (context.containingFile as PsiJavaFile).importList ?: return
     val notImportedStatically = importList.importStaticStatements.none {
         val targetClass = it.resolveTargetClass() ?: return@none false
         ((it.referenceName == methodName) && !allowedClashes.contains(targetClass.qualifiedName))
-                || (it.isOnDemand && (targetClass == this.containingClass))
+                || (it.isOnDemand && (targetClass == containingClass))
     }
     if (notImportedStatically) {
         importList.add(factory.createImportStaticStatement(containingClass, methodName))
@@ -45,3 +82,66 @@ fun PsiElement.shortenAndReformat() {
     codeStyleManager.shortenClassReferences(this)
     CodeStyleManager.getInstance(project).reformat(this)
 }
+
+fun PsiMethodCallExpression.getExpectedBooleanResult(): Boolean? {
+    val isTrue = AbstractAssertJInspection.IS_TRUE.test(this)
+    val isFalse = AbstractAssertJInspection.IS_FALSE.test(this)
+    if (isTrue || isFalse) {
+        return isTrue
+    } else {
+        val isEqualTo = AbstractAssertJInspection.IS_EQUAL_TO_BOOLEAN.test(this) || AbstractAssertJInspection.IS_EQUAL_TO_OBJECT.test(this)
+        val isNotEqualTo =
+            AbstractAssertJInspection.IS_NOT_EQUAL_TO_BOOLEAN.test(this) || AbstractAssertJInspection.IS_NOT_EQUAL_TO_OBJECT.test(this)
+        if (isEqualTo || isNotEqualTo) {
+            val constValue = calculateConstantParameterValue(0) as? Boolean ?: return null
+            return isNotEqualTo xor constValue
+        }
+    }
+    return null
+}
+
+fun PsiMethodCallExpression.calculateConstantParameterValue(argIndex: Int): Any? {
+    if (argIndex >= argumentList.expressions.size) return null
+    val valueExpression = getArg(argIndex)
+    val constantEvaluationHelper = JavaPsiFacade.getInstance(project).constantEvaluationHelper
+    val value = constantEvaluationHelper.computeConstantExpression(valueExpression)
+    if (value == null) {
+        val field = (valueExpression as? PsiReferenceExpression)?.resolve() as? PsiField
+        if (field?.containingClass?.qualifiedName == CommonClassNames.JAVA_LANG_BOOLEAN) {
+            return when (field.name) {
+                "TRUE" -> true
+                "FALSE" -> false
+                else -> null
+            }
+        }
+    }
+    return value
+}
+
+fun PsiExpression.getAllTheSameExpectedBooleanConstants(): Boolean? {
+    val assertThatMethodCall = findStaticMethodCall() ?: return null
+    var lockedResult: Boolean? = null
+    val methodsToView = generateSequence(assertThatMethodCall) { PsiTreeUtil.getParentOfType(it, PsiMethodCallExpression::class.java) }
+
+    for (methodCall in methodsToView) {
+        val expectedResult = methodCall.getExpectedBooleanResult()
+        if (expectedResult != null) {
+            if ((lockedResult != null) && (lockedResult != expectedResult)) {
+                return null
+            }
+            lockedResult = expectedResult
+        } else {
+            val isNotConstant = CallMatcher.anyOf(
+                EXTENSION_POINTS,
+                AbstractAssertJInspection.IS_EQUAL_TO_BOOLEAN,
+                AbstractAssertJInspection.IS_EQUAL_TO_OBJECT,
+                AbstractAssertJInspection.IS_NOT_EQUAL_TO_BOOLEAN,
+                AbstractAssertJInspection.IS_NOT_EQUAL_TO_OBJECT
+            ).test(methodCall)
+            if (isNotConstant) {
+                return null
+            }
+        }
+    }
+    return lockedResult
+}

src/main/java/de/platon42/intellij/plugins/cajon/Helper.kt

@@ -4,9 +4,7 @@ import com.intellij.psi.JavaPsiFacade
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiExpression
 import com.intellij.psi.PsiMethodCallExpression
-import com.siyeh.ig.callMatcher.CallMatcher
-
-val CORE_ASSERT_THAT_MATCHER = CallMatcher.staticCall(AssertJClassNames.ASSERTIONS_CLASSNAME, MethodNames.ASSERT_THAT)!!
+import com.intellij.psi.search.GlobalSearchScope
 
 fun createAssertThat(context: PsiElement, actualExpression: PsiExpression): PsiMethodCallExpression {
     return createAssertThat(context, AssertJClassNames.ASSERTIONS_CLASSNAME, actualExpression)
@@ -33,3 +31,10 @@ fun createMethodCall(context: PsiElement, fullQualifiedMethodName: String, varar
     arguments.forEachIndexed { index, newArg -> expectedExpression.getArg(index).replace(newArg) }
     return expectedExpression
 }
+
+fun hasAssertJMethod(element: PsiElement, classname: String, methodname: String): Boolean {
+    val findClass =
+        JavaPsiFacade.getInstance(element.project).findClass(classname, GlobalSearchScope.allScope(element.project))
+            ?: return false
+    return findClass.allMethods.any { it.name == methodname }
+}

src/main/java/de/platon42/intellij/plugins/cajon/MethodNames.kt

@@ -11,8 +11,19 @@ class MethodNames {
 
         @NonNls
         const val ASSERT_THAT = "assertThat"
+
+        @NonNls
+        const val ASSUME_THAT = "assumeThat"
+
         @NonNls
         const val AS = "as"
+        @NonNls
+        const val DESCRIBED_AS = "describedAs"
+        @NonNls
+        const val IN_HEXADECIMAL = "inHexadecimal"
+        @NonNls
+        const val IN_BINARY = "inBinary"
+
         @NonNls
         const val IS_EQUAL_TO = "isEqualTo"
         @NonNls
@@ -38,16 +49,20 @@ class MethodNames {
         @NonNls
         const val IS_FALSE = "isFalse"
         @NonNls
-        const val IS_NULL = "isNull"
+        const val IS_NULL = "isNull" // terminal, returns void
         @NonNls
         const val IS_NOT_NULL = "isNotNull"
         @NonNls
         const val IS_CLOSE_TO = "isCloseTo"
         @NonNls
         const val IS_NOT_CLOSE_TO = "isNotCloseTo"
+        @NonNls
+        const val IS_INSTANCE_OF = "isInstanceOf"
+        @NonNls
+        const val IS_NOT_INSTANCE_OF = "isNotInstanceOf"
 
         @NonNls
-        const val IS_EMPTY = "isEmpty"
+        const val IS_EMPTY = "isEmpty" // terminal, returns void
         @NonNls
         const val IS_NOT_EMPTY = "isNotEmpty"
         @NonNls
@@ -65,8 +80,22 @@ class MethodNames {
         @NonNls
         const val CONTAINS = "contains"
         @NonNls
+        const val DOES_NOT_CONTAIN = "doesNotContain"
+        @NonNls
         const val CONTAINS_EXACTLY = "containsExactly"
         @NonNls
+        const val IS_EQUAL_TO_IC = "isEqualToIgnoringCase"
+        @NonNls
+        const val IS_NOT_EQUAL_TO_IC = "isNotEqualToIgnoringCase"
+        @NonNls
+        const val STARTS_WITH = "startsWith"
+        @NonNls
+        const val ENDS_WITH = "endsWith"
+        @NonNls
+        const val DOES_NOT_START_WITH = "doesNotStartWith"
+        @NonNls
+        const val DOES_NOT_END_WITH = "doesNotEndWith"
+        @NonNls
         const val CONTAINS_SAME = "containsSame"
         @NonNls
         const val IS_PRESENT = "isPresent"

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AbstractAssertJInspection.kt

@@ -3,6 +3,7 @@ package de.platon42.intellij.plugins.cajon.inspections
 import com.intellij.codeInspection.AbstractBaseJavaLocalInspectionTool
 import com.intellij.codeInspection.LocalQuickFix
 import com.intellij.codeInspection.ProblemsHolder
+import com.intellij.openapi.util.TextRange
 import com.intellij.psi.*
 import com.intellij.psi.search.GlobalSearchScope
 import com.intellij.psi.tree.IElementType
@@ -14,10 +15,10 @@ import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ABSTRACT_C
 import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ABSTRACT_ENUMERABLE_ASSERT_CLASSNAME
 import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ABSTRACT_INTEGER_ASSERT_CLASSNAME
 import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ASSERTIONS_CLASSNAME
+import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ASSERT_INTERFACE
 import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.GUAVA_ASSERTIONS_CLASSNAME
 import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.GUAVA_OPTIONAL_CLASSNAME
 import de.platon42.intellij.plugins.cajon.MethodNames
-import de.platon42.intellij.plugins.cajon.getArg
 import de.platon42.intellij.plugins.cajon.qualifierExpression
 import de.platon42.intellij.plugins.cajon.quickfixes.ReplaceSimpleMethodCallQuickFix
 
@@ -29,7 +30,8 @@ open class AbstractAssertJInspection : AbstractBaseJavaLocalInspectionTool() {
 
         const val REPLACE_DESCRIPTION_TEMPLATE = "Replace %s() with %s()"
         const val REMOVE_EXPECTED_OUTMOST_DESCRIPTION_TEMPLATE = "Unwrap expected expression and replace %s() with %s()"
-        const val REMOVE_ACTUAL_OUTMOST_DESCRIPTION_TEMPLATE = "Unwrap actual expression and replace %s() with %s()"
+        const val MOVE_ACTUAL_EXPRESSION_DESCRIPTION_TEMPLATE = "Remove %s() of actual expression and use assertThat().%s() instead"
+        const val MOVING_OUT_MESSAGE_TEMPLATE = "Moving %s() expression out of assertThat() would be more concise"
 
         val TOKEN_TO_ASSERTJ_FOR_PRIMITIVE_MAP = mapOf<IElementType, String>(
             JavaTokenType.EQEQ to MethodNames.IS_EQUAL_TO,
@@ -74,21 +76,21 @@ open class AbstractAssertJInspection : AbstractBaseJavaLocalInspectionTool() {
         val ASSERT_THAT_JAVA8_OPTIONAL = CallMatcher.staticCall(ASSERTIONS_CLASSNAME, MethodNames.ASSERT_THAT)
             .parameterTypes(CommonClassNames.JAVA_UTIL_OPTIONAL)!!
 
-        val ASSERT_THAT_GUAVA_OPTIONAL = CallMatcher.staticCall(GUAVA_ASSERTIONS_CLASSNAME, MethodNames.ASSERT_THAT)
-            .parameterTypes(GUAVA_OPTIONAL_CLASSNAME)!!
+        val GUAVA_ASSERT_THAT_ANY = CallMatcher.staticCall(GUAVA_ASSERTIONS_CLASSNAME, MethodNames.ASSERT_THAT)
+            .parameterCount(1)!!
 
-        val IS_EQUAL_TO_OBJECT = CallMatcher.instanceCall(ABSTRACT_ASSERT_CLASSNAME, MethodNames.IS_EQUAL_TO)
+        val IS_EQUAL_TO_OBJECT = CallMatcher.instanceCall(ASSERT_INTERFACE, MethodNames.IS_EQUAL_TO)
             .parameterTypes(CommonClassNames.JAVA_LANG_OBJECT)!!
-        val IS_NOT_EQUAL_TO_OBJECT = CallMatcher.instanceCall(ABSTRACT_ASSERT_CLASSNAME, MethodNames.IS_NOT_EQUAL_TO)
+        val IS_NOT_EQUAL_TO_OBJECT = CallMatcher.instanceCall(ASSERT_INTERFACE, MethodNames.IS_NOT_EQUAL_TO)
             .parameterTypes(CommonClassNames.JAVA_LANG_OBJECT)!!
         val IS_EQUAL_TO_BOOLEAN = CallMatcher.instanceCall(ABSTRACT_BOOLEAN_ASSERT_CLASSNAME, MethodNames.IS_EQUAL_TO)
             .parameterTypes("boolean")!!
         val IS_NOT_EQUAL_TO_BOOLEAN =
             CallMatcher.instanceCall(ABSTRACT_BOOLEAN_ASSERT_CLASSNAME, MethodNames.IS_NOT_EQUAL_TO)
                 .parameterTypes("boolean")!!
-        val IS_SAME_AS_OBJECT = CallMatcher.instanceCall(ABSTRACT_ASSERT_CLASSNAME, MethodNames.IS_SAME_AS)
+        val IS_SAME_AS_OBJECT = CallMatcher.instanceCall(ASSERT_INTERFACE, MethodNames.IS_SAME_AS)
             .parameterTypes(CommonClassNames.JAVA_LANG_OBJECT)!!
-        val IS_NOT_SAME_AS_OBJECT = CallMatcher.instanceCall(ABSTRACT_ASSERT_CLASSNAME, MethodNames.IS_NOT_SAME_AS)
+        val IS_NOT_SAME_AS_OBJECT = CallMatcher.instanceCall(ASSERT_INTERFACE, MethodNames.IS_NOT_SAME_AS)
             .parameterTypes(CommonClassNames.JAVA_LANG_OBJECT)!!
 
         val HAS_SIZE = CallMatcher.instanceCall(ABSTRACT_ENUMERABLE_ASSERT_CLASSNAME, MethodNames.HAS_SIZE)
@@ -118,6 +120,8 @@ open class AbstractAssertJInspection : AbstractBaseJavaLocalInspectionTool() {
 
         val COLLECTION_SIZE = CallMatcher.instanceCall(CommonClassNames.JAVA_UTIL_COLLECTION, "size")
             .parameterCount(0)!!
+        val CHAR_SEQUENCE_LENGTH = CallMatcher.instanceCall("java.lang.CharSequence", "length")
+            .parameterCount(0)!!
         val OBJECT_EQUALS = CallMatcher.instanceCall(CommonClassNames.JAVA_LANG_OBJECT, "equals")
             .parameterTypes(CommonClassNames.JAVA_LANG_OBJECT)!!
 
@@ -172,7 +176,22 @@ open class AbstractAssertJInspection : AbstractBaseJavaLocalInspectionTool() {
         val description = REPLACE_DESCRIPTION_TEMPLATE.format(originalMethod, replacementMethod)
         val message = SIMPLIFY_MESSAGE_TEMPLATE.format(originalMethod, replacementMethod)
         val quickFix = ReplaceSimpleMethodCallQuickFix(description, replacementMethod)
-        holder.registerProblem(expression, message, quickFix)
+        val textRange = TextRange(expression.qualifierExpression.textLength, expression.textLength)
+        holder.registerProblem(expression, textRange, message, quickFix)
+    }
+
+    protected fun registerMoveOutMethod(
+        holder: ProblemsHolder,
+        expression: PsiMethodCallExpression,
+        oldActualExpression: PsiMethodCallExpression,
+        replacementMethod: String,
+        quickFixSupplier: (String, String) -> LocalQuickFix
+    ) {
+        val originalMethod = getOriginalMethodName(oldActualExpression) ?: return
+        val description = MOVE_ACTUAL_EXPRESSION_DESCRIPTION_TEMPLATE.format(originalMethod, replacementMethod)
+        val message = MOVING_OUT_MESSAGE_TEMPLATE.format(originalMethod)
+        val quickfix = quickFixSupplier(description, replacementMethod)
+        holder.registerProblem(expression, message, quickfix)
     }
 
     protected fun registerReplaceMethod(
@@ -182,22 +201,23 @@ open class AbstractAssertJInspection : AbstractBaseJavaLocalInspectionTool() {
         replacementMethod: String,
         quickFixSupplier: (String, String) -> LocalQuickFix
     ) {
-        registerConciseMethod(REPLACE_DESCRIPTION_TEMPLATE, oldExpectedCallExpression, replacementMethod, quickFixSupplier, holder, expression)
+        registerConciseMethod(REPLACE_DESCRIPTION_TEMPLATE, holder, expression, oldExpectedCallExpression, replacementMethod, quickFixSupplier)
     }
 
-    private fun registerConciseMethod(
+    protected fun registerConciseMethod(
         descriptionTemplate: String,
+        holder: ProblemsHolder,
+        expression: PsiMethodCallExpression,
         oldExpectedCallExpression: PsiMethodCallExpression,
         replacementMethod: String,
-        quickFixSupplier: (String, String) -> LocalQuickFix,
-        holder: ProblemsHolder,
-        expression: PsiMethodCallExpression
+        quickFixSupplier: (String, String) -> LocalQuickFix
     ) {
         val originalMethod = getOriginalMethodName(oldExpectedCallExpression) ?: return
         val description = descriptionTemplate.format(originalMethod, replacementMethod)
         val message = MORE_CONCISE_MESSAGE_TEMPLATE.format(replacementMethod, originalMethod)
         val quickfix = quickFixSupplier(description, replacementMethod)
-        holder.registerProblem(expression, message, quickfix)
+        val textRange = TextRange(expression.qualifierExpression.textLength, expression.textLength)
+        holder.registerProblem(expression, textRange, message, quickfix)
     }
 
     protected fun registerRemoveExpectedOutmostMethod(
@@ -207,57 +227,6 @@ open class AbstractAssertJInspection : AbstractBaseJavaLocalInspectionTool() {
         replacementMethod: String,
         quickFixSupplier: (String, String) -> LocalQuickFix
     ) {
-        registerConciseMethod(REMOVE_EXPECTED_OUTMOST_DESCRIPTION_TEMPLATE, oldExpectedCallExpression, replacementMethod, quickFixSupplier, holder, expression)
-    }
-
-    protected fun registerRemoveActualOutmostMethod(
-        holder: ProblemsHolder,
-        expression: PsiMethodCallExpression,
-        oldExpectedCallExpression: PsiMethodCallExpression,
-        replacementMethod: String,
-        quickFixSupplier: (String, String) -> LocalQuickFix
-    ) {
-        registerConciseMethod(REMOVE_ACTUAL_OUTMOST_DESCRIPTION_TEMPLATE, oldExpectedCallExpression, replacementMethod, quickFixSupplier, holder, expression)
-    }
-
-    protected fun calculateConstantParameterValue(expression: PsiMethodCallExpression, argIndex: Int): Any? {
-        if (argIndex >= expression.argumentList.expressions.size) return null
-        val valueExpression = expression.getArg(argIndex)
-        val constantEvaluationHelper = JavaPsiFacade.getInstance(expression.project).constantEvaluationHelper
-        val value = constantEvaluationHelper.computeConstantExpression(valueExpression)
-        if (value == null) {
-            val field = (valueExpression as? PsiReferenceExpression)?.resolve() as? PsiField
-            if (field?.containingClass?.qualifiedName == CommonClassNames.JAVA_LANG_BOOLEAN) {
-                return when (field.name) {
-                    "TRUE" -> true
-                    "FALSE" -> false
-                    else -> null
-                }
-            }
-        }
-        return value
-    }
-
-    protected fun getExpectedBooleanResult(expectedCallExpression: PsiMethodCallExpression): Boolean? {
-        val isTrue = IS_TRUE.test(expectedCallExpression)
-        val isFalse = IS_FALSE.test(expectedCallExpression)
-        if (isTrue || isFalse) {
-            return isTrue
-        } else {
-            val isEqualTo = IS_EQUAL_TO_BOOLEAN.test(expectedCallExpression) || IS_EQUAL_TO_OBJECT.test(expectedCallExpression)
-            val isNotEqualTo = IS_NOT_EQUAL_TO_BOOLEAN.test(expectedCallExpression) || IS_NOT_EQUAL_TO_OBJECT.test(expectedCallExpression)
-            if (isEqualTo || isNotEqualTo) {
-                val constValue = calculateConstantParameterValue(expectedCallExpression, 0) as? Boolean ?: return null
-                return isNotEqualTo xor constValue
-            }
-        }
-        return null
-    }
-
-    protected fun hasAssertJMethod(element: PsiElement, classname: String, methodname: String): Boolean {
-        val findClass =
-            JavaPsiFacade.getInstance(element.project).findClass(classname, GlobalSearchScope.allScope(element.project))
-                ?: return false
-        return findClass.allMethods.any { it.name == methodname }
+        registerConciseMethod(REMOVE_EXPECTED_OUTMOST_DESCRIPTION_TEMPLATE, holder, expression, oldExpectedCallExpression, replacementMethod, quickFixSupplier)
     }
 }

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AbstractJUnitAssertInspection.kt

@@ -7,10 +7,6 @@ import org.jetbrains.annotations.NonNls
 open class AbstractJUnitAssertInspection : AbstractBaseJavaLocalInspectionTool() {
 
     companion object {
-        const val CONVERT_MESSAGE_TEMPLATE = "%s can be converted to AssertJ style"
-
-        const val REPLACE_DESCRIPTION_TEMPLATE = "Replace %s() with assertThat().%s()"
-
         @NonNls
         const val JUNIT_ASSERT_CLASSNAME = "org.junit.Assert"
 

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatBinaryExpressionInspection.kt

@@ -4,16 +4,11 @@ import com.intellij.codeInspection.LocalQuickFix
 import com.intellij.codeInspection.ProblemsHolder
 import com.intellij.psi.*
 import com.intellij.psi.util.TypeConversionUtil
-import de.platon42.intellij.plugins.cajon.MethodNames
-import de.platon42.intellij.plugins.cajon.MethodNames.Companion.IS_NOT_NULL
-import de.platon42.intellij.plugins.cajon.MethodNames.Companion.IS_NULL
-import de.platon42.intellij.plugins.cajon.findOutmostMethodCall
-import de.platon42.intellij.plugins.cajon.firstArg
-import de.platon42.intellij.plugins.cajon.map
+import de.platon42.intellij.plugins.cajon.*
+import de.platon42.intellij.plugins.cajon.quickfixes.MoveOutMethodCallExpressionQuickFix
 import de.platon42.intellij.plugins.cajon.quickfixes.SplitBinaryExpressionMethodCallQuickFix
-import de.platon42.intellij.plugins.cajon.quickfixes.SplitEqualsExpressionMethodCallQuickFix
 
-class AssertThatBinaryExpressionIsTrueOrFalseInspection : AbstractAssertJInspection() {
+class AssertThatBinaryExpressionInspection : AbstractAssertJInspection() {
 
     companion object {
         private const val DISPLAY_NAME = "Asserting a binary expression"
@@ -25,19 +20,23 @@ class AssertThatBinaryExpressionIsTrueOrFalseInspection : AbstractAssertJInspect
 
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
         return object : JavaElementVisitor() {
-            override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
-                super.visitMethodCallExpression(expression)
-                if (!ASSERT_THAT_BOOLEAN.test(expression)) {
+            override fun visitExpressionStatement(statement: PsiExpressionStatement) {
+                super.visitExpressionStatement(statement)
+                if (!statement.hasAssertThat()) {
+                    return
+                }
+                val staticMethodCall = statement.findStaticMethodCall() ?: return
+                if (!ASSERT_THAT_BOOLEAN.test(staticMethodCall)) {
                     return
                 }
 
-                val expectedCallExpression = expression.findOutmostMethodCall() ?: return
-                val expectedResult = getExpectedBooleanResult(expectedCallExpression) ?: return
+                val expectedCallExpression = statement.findOutmostMethodCall() ?: return
+                val expectedResult = expectedCallExpression.getAllTheSameExpectedBooleanConstants() ?: return
 
-                val assertThatArgument = expression.firstArg
+                val assertThatArgument = staticMethodCall.firstArg
                 if (assertThatArgument is PsiMethodCallExpression && OBJECT_EQUALS.test(assertThatArgument)) {
-                    val replacementMethod = if (expectedResult) MethodNames.IS_EQUAL_TO else MethodNames.IS_NOT_EQUAL_TO
-                    registerSplitMethod(holder, expression, "${MethodNames.EQUALS}()", replacementMethod, ::SplitEqualsExpressionMethodCallQuickFix)
+                    val replacementMethod = expectedResult.map(MethodNames.IS_EQUAL_TO, MethodNames.IS_NOT_EQUAL_TO)
+                    registerSplitMethod(holder, expectedCallExpression, "${MethodNames.EQUALS}()", replacementMethod, ::MoveOutMethodCallExpressionQuickFix)
                     return
                 }
 
@@ -51,8 +50,8 @@ class AssertThatBinaryExpressionIsTrueOrFalseInspection : AbstractAssertJInspect
                 if (isLeftNull && isRightNull) {
                     return
                 } else if (isLeftNull || isRightNull) {
-                    val replacementMethod = if (expectedResult) IS_NULL else IS_NOT_NULL
-                    registerSplitMethod(holder, expression, "binary", replacementMethod) { desc, method ->
+                    val replacementMethod = expectedResult.map(MethodNames.IS_NULL, MethodNames.IS_NOT_NULL)
+                    registerSplitMethod(holder, expectedCallExpression, "binary", replacementMethod) { desc, method ->
                         SplitBinaryExpressionMethodCallQuickFix(desc, method, pickRightOperand = isLeftNull, noExpectedExpression = true)
                     }
                     return
@@ -60,24 +59,26 @@ class AssertThatBinaryExpressionIsTrueOrFalseInspection : AbstractAssertJInspect
 
                 val isPrimitive = bothTypes.all(TypeConversionUtil::isPrimitiveAndNotNull)
                 val isNumericType = bothTypes.all(TypeConversionUtil::isNumericType)
-                val constantEvaluationHelper = JavaPsiFacade.getInstance(expression.project).constantEvaluationHelper
+                val constantEvaluationHelper = JavaPsiFacade.getInstance(statement.project).constantEvaluationHelper
                 val swapExpectedAndActual = constantEvaluationHelper.computeConstantExpression(binaryExpression.lOperand) != null
 
-                val tokenType = binaryExpression.operationSign.tokenType
+                val tokenType = binaryExpression.operationTokenType
                     .let {
                         if (swapExpectedAndActual) SWAP_SIDE_OF_BINARY_OPERATOR.getOrDefault(it, it) else it
                     }
                     .let {
                         if (expectedResult) it else INVERT_BINARY_OPERATOR.getOrDefault(it, it)
-                    } ?: return
+                    }
                 val mappingToUse =
                     (isPrimitive || isNumericType).map(TOKEN_TO_ASSERTJ_FOR_PRIMITIVE_MAP, TOKEN_TO_ASSERTJ_FOR_OBJECT_MAPPINGS)
                 val replacementMethod = mappingToUse[tokenType] ?: return
 
-                registerSplitMethod(holder, expression, "binary", replacementMethod) { desc, method ->
+                registerSplitMethod(holder, expectedCallExpression, "binary", replacementMethod) { desc, method ->
                     SplitBinaryExpressionMethodCallQuickFix(desc, method, pickRightOperand = swapExpectedAndActual)
                 }
             }
+        }
+    }
 
     private fun registerSplitMethod(
         holder: ProblemsHolder,
@@ -92,5 +93,3 @@ class AssertThatBinaryExpressionIsTrueOrFalseInspection : AbstractAssertJInspect
         holder.registerProblem(expression, message, quickfix)
     }
 }
-    }
-}

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatBooleanConditionInspection.kt

@@ -5,15 +5,13 @@ import com.intellij.psi.JavaElementVisitor
 import com.intellij.psi.PsiElementVisitor
 import com.intellij.psi.PsiMethodCallExpression
 import com.intellij.psi.util.TypeConversionUtil
+import de.platon42.intellij.plugins.cajon.*
 import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ABSTRACT_BOOLEAN_ASSERT_CLASSNAME
-import de.platon42.intellij.plugins.cajon.MethodNames
-import de.platon42.intellij.plugins.cajon.firstArg
-import de.platon42.intellij.plugins.cajon.map
 
-class AssertThatBooleanIsTrueOrFalseInspection : AbstractAssertJInspection() {
+class AssertThatBooleanConditionInspection : AbstractAssertJInspection() {
 
     companion object {
-        private const val DISPLAY_NAME = "Asserting true or false"
+        private const val DISPLAY_NAME = "Asserting a boolean condition"
     }
 
     override fun getDisplayName() = DISPLAY_NAME
@@ -22,6 +20,9 @@ class AssertThatBooleanIsTrueOrFalseInspection : AbstractAssertJInspection() {
         return object : JavaElementVisitor() {
             override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
                 super.visitMethodCallExpression(expression)
+                if (!expression.hasAssertThat()) {
+                    return
+                }
                 val matchingCalls = listOf(
                     IS_EQUAL_TO_OBJECT, IS_EQUAL_TO_BOOLEAN,
                     IS_NOT_EQUAL_TO_OBJECT, IS_NOT_EQUAL_TO_BOOLEAN
@@ -37,7 +38,7 @@ class AssertThatBooleanIsTrueOrFalseInspection : AbstractAssertJInspection() {
                 if (!TypeConversionUtil.isBooleanType(expectedExpression.type)) {
                     return
                 }
-                val expectedResult = calculateConstantParameterValue(expression, 0) as? Boolean ?: return
+                val expectedResult = expression.calculateConstantParameterValue(0) as? Boolean ?: return
                 val flippedBooleanTest = matchingCalls.drop(2).any { it }
 
                 val replacementMethod = (expectedResult xor flippedBooleanTest).map(MethodNames.IS_TRUE, MethodNames.IS_FALSE)

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatEnumerableIsEmptyInspection.kt

@@ -4,7 +4,10 @@ import com.intellij.codeInspection.ProblemsHolder
 import com.intellij.psi.JavaElementVisitor
 import com.intellij.psi.PsiElementVisitor
 import com.intellij.psi.PsiMethodCallExpression
+import com.intellij.psi.PsiStatement
 import de.platon42.intellij.plugins.cajon.MethodNames
+import de.platon42.intellij.plugins.cajon.calculateConstantParameterValue
+import de.platon42.intellij.plugins.cajon.hasAssertThat
 
 class AssertThatEnumerableIsEmptyInspection : AbstractAssertJInspection() {
 
@@ -18,11 +21,15 @@ class AssertThatEnumerableIsEmptyInspection : AbstractAssertJInspection() {
         return object : JavaElementVisitor() {
             override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
                 super.visitMethodCallExpression(expression)
-                if (!HAS_SIZE.test(expression)) {
+                if (!expression.hasAssertThat()) {
+                    return
+                }
+                val isLastExpression = expression.parent is PsiStatement
+                if (!(HAS_SIZE.test(expression) && isLastExpression)) {
                     return
                 }
 
-                val value = calculateConstantParameterValue(expression, 0) ?: return
+                val value = expression.calculateConstantParameterValue(0) ?: return
                 if (value == 0) {
                     registerSimplifyMethod(holder, expression, MethodNames.IS_EMPTY)
                 }

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatGuavaOptionalInspection.kt

@@ -1,10 +1,8 @@
 package de.platon42.intellij.plugins.cajon.inspections
 
 import com.intellij.codeInspection.ProblemsHolder
-import com.intellij.psi.JavaElementVisitor
-import com.intellij.psi.JavaPsiFacade
-import com.intellij.psi.PsiElementVisitor
-import com.intellij.psi.PsiMethodCallExpression
+import com.intellij.openapi.util.TextRange
+import com.intellij.psi.*
 import com.intellij.psi.search.GlobalSearchScope
 import com.siyeh.ig.callMatcher.CallMatcher
 import de.platon42.intellij.plugins.cajon.*
@@ -14,97 +12,101 @@ class AssertThatGuavaOptionalInspection : AbstractAssertJInspection() {
 
     companion object {
         private const val DISPLAY_NAME = "Asserting an Optional (Guava)"
+        private const val REPLACE_GUAVA_DESCRIPTION_TEMPLATE = "Replace %s() with Guava assertThat().%s()"
     }
 
     override fun getDisplayName() = DISPLAY_NAME
 
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
         return object : JavaElementVisitor() {
-            override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
-                super.visitMethodCallExpression(expression)
-                JavaPsiFacade.getInstance(expression.project)
-                    .findClass(AssertJClassNames.GUAVA_ASSERTIONS_CLASSNAME, GlobalSearchScope.allScope(expression.project)) ?: return
-                val assertThatGuava = ASSERT_THAT_GUAVA_OPTIONAL.test(expression)
-                if (!(ASSERT_THAT_ANY.test(expression) || assertThatGuava)) {
+            override fun visitExpressionStatement(statement: PsiExpressionStatement) {
+                super.visitExpressionStatement(statement)
+                if (!statement.hasAssertThat()) {
                     return
                 }
-                val expectedCallExpression = expression.findOutmostMethodCall() ?: return
+                val staticMethodCall = statement.findStaticMethodCall() ?: return
 
-                val isEqualTo = IS_EQUAL_TO_OBJECT.test(expectedCallExpression)
-                val isNotEqualTo = IS_NOT_EQUAL_TO_OBJECT.test(expectedCallExpression)
-                if (assertThatGuava) {
-                    if (isEqualTo) {
-                        val innerExpectedCall = expectedCallExpression.firstArg as? PsiMethodCallExpression ?: return
-                        if (CallMatcher.anyOf(GUAVA_OPTIONAL_OF, GUAVA_OPTIONAL_FROM_NULLABLE).test(innerExpectedCall)) {
-                            registerRemoveExpectedOutmostMethod(holder, expression, expectedCallExpression, MethodNames.CONTAINS, ::RemoveExpectedOutmostMethodCallQuickFix)
-                        } else if (GUAVA_OPTIONAL_ABSENT.test(innerExpectedCall)) {
-                            registerSimplifyMethod(holder, expectedCallExpression, MethodNames.IS_ABSENT)
+                if (!checkPreconditions(staticMethodCall)) {
+                    return
                 }
-                    } else if (isNotEqualTo) {
-                        val innerExpectedCall = expectedCallExpression.firstArg as? PsiMethodCallExpression ?: return
-                        if (GUAVA_OPTIONAL_ABSENT.test(innerExpectedCall)) {
-                            registerSimplifyMethod(holder, expectedCallExpression, MethodNames.IS_PRESENT)
+                val actualExpression = staticMethodCall.firstArg as? PsiMethodCallExpression ?: return
+
+                val outmostMethodCall = statement.findOutmostMethodCall() ?: return
+                if (GUAVA_OPTIONAL_GET.test(actualExpression)) {
+                    val expectedCallExpression = staticMethodCall.gatherAssertionCalls().singleOrNull() ?: return
+                    if (IS_EQUAL_TO_OBJECT.test(expectedCallExpression)) {
+                        registerMoveOutMethod(holder, outmostMethodCall, actualExpression, MethodNames.CONTAINS) { desc, method ->
+                            QuickFixWithPostfixDelegate(
+                                RemoveActualOutmostMethodCallQuickFix(desc, method),
+                                ForGuavaPostFix.REPLACE_BY_GUAVA_ASSERT_THAT_AND_STATIC_IMPORT
+                            )
                         }
                     }
-                } else {
-                    // we're not calling an assertThat() from Guava, but a core-AssertJ one!
-                    // We need to replace that by the Guava one, if we want to apply a formally correct fix.
-                    val actualExpression = expression.firstArg as? PsiMethodCallExpression
-                    if (actualExpression != null) {
-                        if (GUAVA_OPTIONAL_GET.test(actualExpression) && isEqualTo) {
-                            registerRemoveActualOutmostForGuavaMethod(holder, expression, expectedCallExpression, MethodNames.CONTAINS)
                 } else if (GUAVA_OPTIONAL_IS_PRESENT.test(actualExpression)) {
-                            val expectedPresence = getExpectedBooleanResult(expectedCallExpression) ?: return
+                    val expectedPresence = outmostMethodCall.getAllTheSameExpectedBooleanConstants() ?: return
                     val replacementMethod = expectedPresence.map(MethodNames.IS_PRESENT, MethodNames.IS_ABSENT)
-                            registerRemoveActualOutmostForGuavaMethod(holder, expression, expectedCallExpression, replacementMethod, noExpectedExpression = true)
-                        }
-                    }
-                    if (isEqualTo) {
-                        val innerExpectedCall = expectedCallExpression.firstArg as? PsiMethodCallExpression ?: return
-                        if (CallMatcher.anyOf(GUAVA_OPTIONAL_OF, GUAVA_OPTIONAL_FROM_NULLABLE).test(innerExpectedCall)) {
-                            registerRemoveExpectedOutmostMethod(holder, expression, expectedCallExpression, MethodNames.CONTAINS) { desc, method ->
+                    registerMoveOutMethod(holder, outmostMethodCall, actualExpression, replacementMethod) { desc, method ->
                         QuickFixWithPostfixDelegate(
-                                    RemoveExpectedOutmostMethodCallQuickFix(desc, method),
+                            MoveOutMethodCallExpressionQuickFix(desc, method),
                             ForGuavaPostFix.REPLACE_BY_GUAVA_ASSERT_THAT_AND_STATIC_IMPORT
                         )
                     }
-                        } else if (GUAVA_OPTIONAL_ABSENT.test(innerExpectedCall)) {
-                            registerSimplifyForGuavaMethod(holder, expectedCallExpression, MethodNames.IS_ABSENT)
-                        }
-                    } else if (isNotEqualTo) {
-                        val innerExpectedCall = expectedCallExpression.firstArg as? PsiMethodCallExpression ?: return
-                        if (GUAVA_OPTIONAL_ABSENT.test(innerExpectedCall)) {
-                            registerSimplifyForGuavaMethod(holder, expectedCallExpression, MethodNames.IS_PRESENT)
-                        }
-                    }
-                }
-            }
                 }
             }
 
-    private fun registerRemoveActualOutmostForGuavaMethod(
-        holder: ProblemsHolder,
-        expression: PsiMethodCallExpression,
-        oldExpectedCallExpression: PsiMethodCallExpression,
-        replacementMethod: String,
-        noExpectedExpression: Boolean = false
-    ) {
-        registerRemoveActualOutmostMethod(holder, expression, oldExpectedCallExpression, replacementMethod) { desc, method ->
+            override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
+                super.visitMethodCallExpression(expression)
+                if (!expression.hasAssertThat()) {
+                    return
+                }
+                val staticMethodCall = expression.findStaticMethodCall() ?: return
+                if (!checkPreconditions(staticMethodCall)) {
+                    return
+                }
+                // We're not calling an assertThat() from Guava, but a core-AssertJ one!
+                // We need to replace that by the Guava one, if we want to apply a formally correct fix.
+                if (IS_EQUAL_TO_OBJECT.test(expression)) {
+                    val innerExpectedCall = expression.firstArg as? PsiMethodCallExpression ?: return
+                    if (CallMatcher.anyOf(GUAVA_OPTIONAL_OF, GUAVA_OPTIONAL_FROM_NULLABLE).test(innerExpectedCall)) {
+                        registerRemoveExpectedOutmostMethod(holder, expression, expression, MethodNames.CONTAINS) { desc, method ->
                             QuickFixWithPostfixDelegate(
-                RemoveActualOutmostMethodCallQuickFix(desc, method, noExpectedExpression),
+                                UnwrapExpectedStaticMethodCallQuickFix(desc, method),
                                 ForGuavaPostFix.REPLACE_BY_GUAVA_ASSERT_THAT_AND_STATIC_IMPORT
                             )
                         }
+                    } else if (GUAVA_OPTIONAL_ABSENT.test(innerExpectedCall)) {
+                        registerSimplifyForGuavaMethod(holder, expression, MethodNames.IS_ABSENT)
+                    }
+                } else if (IS_NOT_EQUAL_TO_OBJECT.test(expression)) {
+                    val innerExpectedCall = expression.firstArg as? PsiMethodCallExpression ?: return
+                    if (GUAVA_OPTIONAL_ABSENT.test(innerExpectedCall)) {
+                        registerSimplifyForGuavaMethod(holder, expression, MethodNames.IS_PRESENT)
+                    }
+                }
+            }
+
+            private fun checkPreconditions(staticMethodCall: PsiMethodCallExpression): Boolean {
+                val assertThatGuava = GUAVA_ASSERT_THAT_ANY.test(staticMethodCall)
+
+                if (ASSERT_THAT_ANY.test(staticMethodCall) || assertThatGuava) {
+                    JavaPsiFacade.getInstance(staticMethodCall.project)
+                        .findClass(AssertJClassNames.GUAVA_ASSERTIONS_CLASSNAME, GlobalSearchScope.allScope(staticMethodCall.project)) ?: return false
+                    return true
+                }
+                return false
+            }
+        }
     }
 
     private fun registerSimplifyForGuavaMethod(holder: ProblemsHolder, expression: PsiMethodCallExpression, replacementMethod: String) {
         val originalMethod = getOriginalMethodName(expression) ?: return
-        val description = REPLACE_DESCRIPTION_TEMPLATE.format(originalMethod, replacementMethod)
+        val description = REPLACE_GUAVA_DESCRIPTION_TEMPLATE.format(originalMethod, replacementMethod)
         val message = SIMPLIFY_MESSAGE_TEMPLATE.format(originalMethod, replacementMethod)
         val quickFix = QuickFixWithPostfixDelegate(
             ReplaceSimpleMethodCallQuickFix(description, replacementMethod),
             ForGuavaPostFix.REPLACE_BY_GUAVA_ASSERT_THAT_AND_STATIC_IMPORT
         )
-        holder.registerProblem(expression, message, quickFix)
+        val textRange = TextRange(expression.qualifierExpression.textLength, expression.textLength)
+        holder.registerProblem(expression, textRange, message, quickFix)
     }
 }

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatInstanceOfInspection.kt

@@ -0,0 +1,52 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.codeInspection.LocalQuickFix
+import com.intellij.codeInspection.ProblemsHolder
+import com.intellij.psi.*
+import de.platon42.intellij.plugins.cajon.*
+import de.platon42.intellij.plugins.cajon.quickfixes.MoveOutInstanceOfExpressionQuickFix
+
+class AssertThatInstanceOfInspection : AbstractAssertJInspection() {
+
+    companion object {
+        private const val DISPLAY_NAME = "Asserting a class instance"
+        private const val REMOVE_INSTANCEOF_DESCRIPTION_TEMPLATE = "Remove instanceof in actual expression and use assertThat().%s() instead"
+        private const val MOVE_OUT_INSTANCEOF_MESSAGE = "instanceof expression could be moved out of assertThat()"
+    }
+
+    override fun getDisplayName() = DISPLAY_NAME
+
+    override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
+        return object : JavaElementVisitor() {
+            override fun visitExpressionStatement(statement: PsiExpressionStatement) {
+                super.visitExpressionStatement(statement)
+                if (!statement.hasAssertThat()) {
+                    return
+                }
+                val staticMethodCall = statement.findStaticMethodCall() ?: return
+                if (!ASSERT_THAT_BOOLEAN.test(staticMethodCall)) {
+                    return
+                }
+
+                val expectedCallExpression = statement.findOutmostMethodCall() ?: return
+                val expectedResult = expectedCallExpression.getAllTheSameExpectedBooleanConstants() ?: return
+
+                if (staticMethodCall.firstArg is PsiInstanceOfExpression) {
+                    val replacementMethod = expectedResult.map(MethodNames.IS_INSTANCE_OF, MethodNames.IS_NOT_INSTANCE_OF)
+                    registerMoveOutInstanceOfMethod(holder, expectedCallExpression, replacementMethod, ::MoveOutInstanceOfExpressionQuickFix)
+                }
+            }
+        }
+    }
+
+    private fun registerMoveOutInstanceOfMethod(
+        holder: ProblemsHolder,
+        expression: PsiMethodCallExpression,
+        replacementMethod: String,
+        quickFixSupplier: (String, String) -> LocalQuickFix
+    ) {
+        val description = REMOVE_INSTANCEOF_DESCRIPTION_TEMPLATE.format(replacementMethod)
+        val quickfix = quickFixSupplier(description, replacementMethod)
+        holder.registerProblem(expression, MOVE_OUT_INSTANCEOF_MESSAGE, quickfix)
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatInvertedBooleanConditionInspection.kt

@@ -0,0 +1,38 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.codeInspection.ProblemsHolder
+import com.intellij.psi.*
+import de.platon42.intellij.plugins.cajon.*
+import de.platon42.intellij.plugins.cajon.quickfixes.InvertUnaryStatementQuickFix
+
+class AssertThatInvertedBooleanConditionInspection : AbstractAssertJInspection() {
+
+    companion object {
+        private const val DISPLAY_NAME = "Asserting an inverted boolean condition"
+        private const val INVERT_CONDITION_MESSAGE = "Condition inside assertThat() could be inverted"
+    }
+
+    override fun getDisplayName() = DISPLAY_NAME
+
+    override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
+        return object : JavaElementVisitor() {
+            override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
+                super.visitMethodCallExpression(expression)
+                if (!expression.hasAssertThat()) {
+                    return
+                }
+                val staticMethodCall = expression.findStaticMethodCall() ?: return
+                if (!ASSERT_THAT_BOOLEAN.test(staticMethodCall)) {
+                    return
+                }
+                expression.getExpectedBooleanResult() ?: return
+
+                val prefixExpression = staticMethodCall.firstArg as? PsiPrefixExpression ?: return
+                if (prefixExpression.operationTokenType == JavaTokenType.EXCL) {
+                    val outmostMethodCall = expression.findOutmostMethodCall() ?: return
+                    holder.registerProblem(outmostMethodCall, INVERT_CONDITION_MESSAGE, InvertUnaryStatementQuickFix())
+                }
+            }
+        }
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatJava8OptionalInspection.kt

@@ -3,14 +3,13 @@ package de.platon42.intellij.plugins.cajon.inspections
 import com.intellij.codeInspection.ProblemsHolder
 import com.intellij.psi.JavaElementVisitor
 import com.intellij.psi.PsiElementVisitor
+import com.intellij.psi.PsiExpressionStatement
 import com.intellij.psi.PsiMethodCallExpression
 import com.siyeh.ig.callMatcher.CallMatcher
-import de.platon42.intellij.plugins.cajon.MethodNames
-import de.platon42.intellij.plugins.cajon.findOutmostMethodCall
-import de.platon42.intellij.plugins.cajon.firstArg
-import de.platon42.intellij.plugins.cajon.map
+import de.platon42.intellij.plugins.cajon.*
+import de.platon42.intellij.plugins.cajon.quickfixes.MoveOutMethodCallExpressionQuickFix
 import de.platon42.intellij.plugins.cajon.quickfixes.RemoveActualOutmostMethodCallQuickFix
-import de.platon42.intellij.plugins.cajon.quickfixes.RemoveExpectedOutmostMethodCallQuickFix
+import de.platon42.intellij.plugins.cajon.quickfixes.UnwrapExpectedStaticMethodCallQuickFix
 
 class AssertThatJava8OptionalInspection : AbstractAssertJInspection() {
 
@@ -22,46 +21,58 @@ class AssertThatJava8OptionalInspection : AbstractAssertJInspection() {
 
     override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
         return object : JavaElementVisitor() {
-            override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
-                super.visitMethodCallExpression(expression)
-                if (!ASSERT_THAT_ANY.test(expression)) {
+            override fun visitExpressionStatement(statement: PsiExpressionStatement) {
+                super.visitExpressionStatement(statement)
+                if (!statement.hasAssertThat()) {
                     return
                 }
-                val expectedCallExpression = expression.findOutmostMethodCall() ?: return
-
-                if (ASSERT_THAT_JAVA8_OPTIONAL.test(expression)) {
-                    if (IS_EQUAL_TO_OBJECT.test(expectedCallExpression)) {
-                        val innerExpectedCall = expectedCallExpression.firstArg as? PsiMethodCallExpression ?: return
-                        if (CallMatcher.anyOf(OPTIONAL_OF, OPTIONAL_OF_NULLABLE).test(innerExpectedCall)) {
-                            registerRemoveExpectedOutmostMethod(holder, expression, expectedCallExpression, MethodNames.CONTAINS, ::RemoveExpectedOutmostMethodCallQuickFix)
-                        } else if (OPTIONAL_EMPTY.test(innerExpectedCall)) {
-                            registerSimplifyMethod(holder, expectedCallExpression, MethodNames.IS_NOT_PRESENT)
-                        }
-                    } else if (IS_NOT_EQUAL_TO_OBJECT.test(expectedCallExpression)) {
-                        val innerExpectedCall = expectedCallExpression.firstArg as? PsiMethodCallExpression ?: return
-                        if (OPTIONAL_EMPTY.test(innerExpectedCall)) {
-                            registerSimplifyMethod(holder, expectedCallExpression, MethodNames.IS_PRESENT)
-                        }
-                    }
-                } else {
-                    val actualExpression = expression.firstArg as? PsiMethodCallExpression ?: return
+                val staticMethodCall = statement.findStaticMethodCall() ?: return
+                if (!ASSERT_THAT_ANY.test(staticMethodCall)) {
+                    return
+                }
+                val actualExpression = staticMethodCall.firstArg as? PsiMethodCallExpression ?: return
 
+                val outmostMethodCall = statement.findOutmostMethodCall() ?: return
                 if (OPTIONAL_GET.test(actualExpression)) {
+                    val expectedCallExpression = staticMethodCall.gatherAssertionCalls().singleOrNull() ?: return
                     if (IS_EQUAL_TO_OBJECT.test(expectedCallExpression)) {
-                            registerRemoveActualOutmostMethod(holder, expression, expectedCallExpression, MethodNames.CONTAINS) { desc, method ->
+                        registerMoveOutMethod(holder, outmostMethodCall, actualExpression, MethodNames.CONTAINS) { desc, method ->
                             RemoveActualOutmostMethodCallQuickFix(desc, method)
                         }
                     } else if (IS_SAME_AS_OBJECT.test(expectedCallExpression)) {
-                            registerRemoveActualOutmostMethod(holder, expression, expectedCallExpression, MethodNames.CONTAINS_SAME) { desc, method ->
+                        registerMoveOutMethod(holder, outmostMethodCall, actualExpression, MethodNames.CONTAINS_SAME) { desc, method ->
                             RemoveActualOutmostMethodCallQuickFix(desc, method)
                         }
                     }
                 } else if (OPTIONAL_IS_PRESENT.test(actualExpression)) {
-                        val expectedPresence = getExpectedBooleanResult(expectedCallExpression) ?: return
+                    val expectedPresence = outmostMethodCall.getAllTheSameExpectedBooleanConstants() ?: return
                     val replacementMethod = expectedPresence.map(MethodNames.IS_PRESENT, MethodNames.IS_NOT_PRESENT)
-                        registerRemoveActualOutmostMethod(holder, expression, expectedCallExpression, replacementMethod) { desc, method ->
-                            RemoveActualOutmostMethodCallQuickFix(desc, method, noExpectedExpression = true)
-                        }
+                    registerMoveOutMethod(holder, outmostMethodCall, actualExpression, replacementMethod) { desc, method ->
+                        MoveOutMethodCallExpressionQuickFix(desc, method)
+                    }
+                }
+            }
+
+            override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
+                super.visitMethodCallExpression(expression)
+                if (!expression.hasAssertThat()) {
+                    return
+                }
+                val staticMethodCall = expression.findStaticMethodCall() ?: return
+                if (!ASSERT_THAT_JAVA8_OPTIONAL.test(staticMethodCall)) {
+                    return
+                }
+                if (IS_EQUAL_TO_OBJECT.test(expression)) {
+                    val innerExpectedCall = expression.firstArg as? PsiMethodCallExpression ?: return
+                    if (CallMatcher.anyOf(OPTIONAL_OF, OPTIONAL_OF_NULLABLE).test(innerExpectedCall)) {
+                        registerRemoveExpectedOutmostMethod(holder, expression, expression, MethodNames.CONTAINS, ::UnwrapExpectedStaticMethodCallQuickFix)
+                    } else if (OPTIONAL_EMPTY.test(innerExpectedCall)) {
+                        registerSimplifyMethod(holder, expression, MethodNames.IS_NOT_PRESENT)
+                    }
+                } else if (IS_NOT_EQUAL_TO_OBJECT.test(expression)) {
+                    val innerExpectedCall = expression.firstArg as? PsiMethodCallExpression ?: return
+                    if (OPTIONAL_EMPTY.test(innerExpectedCall)) {
+                        registerSimplifyMethod(holder, expression, MethodNames.IS_PRESENT)
                     }
                 }
             }

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatObjectIsNullOrNotNullInspection.kt

@@ -1,12 +1,10 @@
 package de.platon42.intellij.plugins.cajon.inspections
 
 import com.intellij.codeInspection.ProblemsHolder
-import com.intellij.psi.JavaElementVisitor
-import com.intellij.psi.PsiElementVisitor
-import com.intellij.psi.PsiMethodCallExpression
-import com.intellij.psi.PsiType
+import com.intellij.psi.*
 import de.platon42.intellij.plugins.cajon.MethodNames
 import de.platon42.intellij.plugins.cajon.firstArg
+import de.platon42.intellij.plugins.cajon.hasAssertThat
 import de.platon42.intellij.plugins.cajon.map
 
 class AssertThatObjectIsNullOrNotNullInspection : AbstractAssertJInspection() {
@@ -21,9 +19,13 @@ class AssertThatObjectIsNullOrNotNullInspection : AbstractAssertJInspection() {
         return object : JavaElementVisitor() {
             override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
                 super.visitMethodCallExpression(expression)
+                if (!expression.hasAssertThat()) {
+                    return
+                }
                 val isNotEqualTo = IS_NOT_EQUAL_TO_OBJECT.test(expression)
                 val isEqualTo = IS_EQUAL_TO_OBJECT.test(expression)
-                if (!(isEqualTo || isNotEqualTo)) {
+                val isLastExpression = expression.parent is PsiStatement
+                if (!((isEqualTo && isLastExpression) || isNotEqualTo)) {
                     return
                 }
 

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatSizeInspection.kt

@@ -2,17 +2,18 @@ package de.platon42.intellij.plugins.cajon.inspections
 
 import com.intellij.codeInspection.ProblemsHolder
 import com.intellij.psi.*
+import de.platon42.intellij.plugins.cajon.*
+import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ABSTRACT_CHAR_SEQUENCE_ASSERT_CLASSNAME
 import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ABSTRACT_ITERABLE_ASSERT_CLASSNAME
-import de.platon42.intellij.plugins.cajon.MethodNames
-import de.platon42.intellij.plugins.cajon.findOutmostMethodCall
-import de.platon42.intellij.plugins.cajon.firstArg
-import de.platon42.intellij.plugins.cajon.map
+import de.platon42.intellij.plugins.cajon.quickfixes.ReplaceHasSizeMethodCallQuickFix
 import de.platon42.intellij.plugins.cajon.quickfixes.ReplaceSizeMethodCallQuickFix
 
 class AssertThatSizeInspection : AbstractAssertJInspection() {
 
     companion object {
-        private const val DISPLAY_NAME = "Asserting the size of an collection or array"
+        private const val DISPLAY_NAME = "Asserting the size of an collection, array or string"
+        private const val REMOVE_SIZE_DESCRIPTION_TEMPLATE = "Remove size determination of expected expression and replace %s() with %s()"
+        private const val REMOVE_ALL_MESSAGE = "Try to operate on the iterable itself rather than its size"
 
         private val BONUS_EXPRESSIONS_CALL_MATCHER_MAP = listOf(
             IS_LESS_THAN_INT to MethodNames.HAS_SIZE_LESS_THAN,
@@ -20,61 +21,8 @@ class AssertThatSizeInspection : AbstractAssertJInspection() {
             IS_GREATER_THAN_INT to MethodNames.HAS_SIZE_GREATER_THAN,
             IS_GREATER_THAN_OR_EQUAL_TO_INT to MethodNames.HAS_SIZE_GREATER_THAN_OR_EQUAL_TO
         )
-    }
 
-    override fun getDisplayName() = DISPLAY_NAME
-
-    override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
-        return object : JavaElementVisitor() {
-            override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
-                super.visitMethodCallExpression(expression)
-                if (!ASSERT_THAT_INT.test(expression)) {
-                    return
-                }
-                val actualExpression = expression.firstArg
-
-                if (isArrayLength(actualExpression) || isCollectionSize(actualExpression)) {
-                    val expectedCallExpression = expression.findOutmostMethodCall() ?: return
-                    val constValue = calculateConstantParameterValue(expectedCallExpression, 0)
-                    if (IS_EQUAL_TO_INT.test(expectedCallExpression)) {
-                        if (constValue == 0) {
-                            registerReplaceMethod(holder, expression, expectedCallExpression, MethodNames.IS_EMPTY) { desc, method ->
-                                ReplaceSizeMethodCallQuickFix(desc, method, noExpectedExpression = true)
-                            }
-                        } else {
-                            val equalToExpression = expectedCallExpression.firstArg
-                            if (isCollectionSize(equalToExpression) || isArrayLength(equalToExpression)) {
-                                registerReplaceMethod(holder, expression, expectedCallExpression, MethodNames.HAS_SAME_SIZE_AS) { desc, method ->
-                                    ReplaceSizeMethodCallQuickFix(desc, method, expectedIsCollection = true)
-                                }
-                            } else {
-                                registerReplaceMethod(holder, expression, expectedCallExpression, MethodNames.HAS_SIZE) { desc, method ->
-                                    ReplaceSizeMethodCallQuickFix(desc, method)
-                                }
-                            }
-                        }
-                    } else {
-                        val isTestForEmpty = ((IS_LESS_THAN_OR_EQUAL_TO_INT.test(expectedCallExpression) && (constValue == 0))
-                                || (IS_LESS_THAN_INT.test(expectedCallExpression) && (constValue == 1))
-                                || IS_ZERO.test(expectedCallExpression))
-                        val isTestForNotEmpty = ((IS_GREATER_THAN_INT.test(expectedCallExpression) && (constValue == 0))
-                                || (IS_GREATER_THAN_OR_EQUAL_TO_INT.test(expectedCallExpression) && (constValue == 1))
-                                || IS_NOT_ZERO.test(expectedCallExpression))
-                        if (isTestForEmpty || isTestForNotEmpty) {
-                            val replacementMethod = isTestForEmpty.map(MethodNames.IS_EMPTY, MethodNames.IS_NOT_EMPTY)
-                            registerReplaceMethod(holder, expression, expectedCallExpression, replacementMethod) { desc, method ->
-                                ReplaceSizeMethodCallQuickFix(desc, method, noExpectedExpression = true)
-                            }
-                        } else if (hasAssertJMethod(expression, ABSTRACT_ITERABLE_ASSERT_CLASSNAME, MethodNames.HAS_SIZE_LESS_THAN)) {
-                            // new stuff in AssertJ 13.2.0
-                            val matchedMethod = BONUS_EXPRESSIONS_CALL_MATCHER_MAP.find { it.first.test(expectedCallExpression) }?.second ?: return
-                            registerReplaceMethod(holder, expression, expectedCallExpression, matchedMethod) { desc, method ->
-                                ReplaceSizeMethodCallQuickFix(desc, method)
-                            }
-                        }
-                    }
-                }
-            }
+        private fun isCharSequenceLength(expression: PsiExpression) = (expression is PsiMethodCallExpression) && CHAR_SEQUENCE_LENGTH.test(expression)
 
         private fun isCollectionSize(expression: PsiExpression) = (expression is PsiMethodCallExpression) && COLLECTION_SIZE.test(expression)
 
@@ -83,6 +31,119 @@ class AssertThatSizeInspection : AbstractAssertJInspection() {
             return ((psiReferenceExpression.qualifierExpression?.type is PsiArrayType)
                     && ((psiReferenceExpression.resolve() as? PsiField)?.name == "length"))
         }
+
+        fun getMatch(expression: PsiMethodCallExpression, isForArrayOrCollection: Boolean, isForString: Boolean): Match? {
+            val isLastExpression = expression.parent is PsiStatement
+            val constValue = expression.calculateConstantParameterValue(0)
+            if (IS_EQUAL_TO_INT.test(expression)) {
+                return if ((constValue == 0) && isLastExpression) {
+                    Match(expression, MethodNames.IS_EMPTY, noExpectedExpression = true)
+                } else {
+                    val equalToExpression = expression.firstArg
+                    if (isForArrayOrCollection && (isCollectionSize(equalToExpression) || isArrayLength(equalToExpression)) ||
+                        isForString && (isCollectionSize(equalToExpression) || isArrayLength(equalToExpression) || isCharSequenceLength(equalToExpression))
+                    ) {
+                        Match(expression, MethodNames.HAS_SAME_SIZE_AS, expectedIsCollection = true)
+                    } else {
+                        Match(expression, MethodNames.HAS_SIZE)
+                    }
+                }
+            } else {
+                val isTestForEmpty = ((IS_LESS_THAN_OR_EQUAL_TO_INT.test(expression) && (constValue == 0))
+                        || (IS_LESS_THAN_INT.test(expression) && (constValue == 1))
+                        || IS_ZERO.test(expression))
+                val isTestForNotEmpty = ((IS_GREATER_THAN_INT.test(expression) && (constValue == 0))
+                        || (IS_GREATER_THAN_OR_EQUAL_TO_INT.test(expression) && (constValue == 1))
+                        || IS_NOT_ZERO.test(expression))
+                if ((isTestForEmpty && isLastExpression) || isTestForNotEmpty) {
+                    val replacementMethod = isTestForEmpty.map(MethodNames.IS_EMPTY, MethodNames.IS_NOT_EMPTY)
+                    return Match(expression, replacementMethod, noExpectedExpression = true)
+                } else if (hasAssertJMethod(expression, ABSTRACT_ITERABLE_ASSERT_CLASSNAME, MethodNames.HAS_SIZE_LESS_THAN)) {
+                    // new stuff in AssertJ 13.2.0
+                    val replacementMethod = BONUS_EXPRESSIONS_CALL_MATCHER_MAP.find { it.first.test(expression) }?.second ?: return null
+                    return Match(expression, replacementMethod)
+                }
+                return null
             }
         }
     }
+
+    override fun getDisplayName() = DISPLAY_NAME
+
+    override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
+        return object : JavaElementVisitor() {
+            override fun visitExpressionStatement(statement: PsiExpressionStatement) {
+                super.visitExpressionStatement(statement)
+                if (!statement.hasAssertThat()) {
+                    return
+                }
+                val staticMethodCall = statement.findStaticMethodCall() ?: return
+                if (!ASSERT_THAT_INT.test(staticMethodCall)) {
+                    return
+                }
+                val actualExpression = staticMethodCall.firstArg
+                val isForArrayOrCollection = isArrayLength(actualExpression) || isCollectionSize(actualExpression)
+                val isForString = isCharSequenceLength(actualExpression)
+                if (!(isForArrayOrCollection || isForString)) {
+                    return
+                }
+                val matches = staticMethodCall.collectMethodCallsUpToStatement()
+                    .mapNotNull { getMatch(it, isForArrayOrCollection, isForString) }
+                    .toList()
+                if (matches.isNotEmpty()) {
+                    if (matches.size == 1) {
+                        val match = matches.single()
+                        val expression = match.methodCall
+                        registerReplaceMethod(
+                            holder,
+                            expression,
+                            expression,
+                            match.replacementMethod
+                        )
+                        { desc, method ->
+                            ReplaceSizeMethodCallQuickFix(desc, method, noExpectedExpression = match.noExpectedExpression, expectedIsCollection = match.expectedIsCollection)
+                        }
+                    } else {
+                        // I could try to create a quickfix for this, too, but it's probably not worth the effort
+                        holder.registerProblem(statement, REMOVE_ALL_MESSAGE)
+                    }
+                }
+            }
+
+            override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
+                super.visitMethodCallExpression(expression)
+                if (!expression.hasAssertThat()) {
+                    return
+                }
+                val isHasSize = HAS_SIZE.test(expression)
+                if (!(isHasSize)) {
+                    return
+                }
+                val actualExpression = expression.firstArg
+
+                val isForArrayOrCollection = isArrayLength(actualExpression) || isCollectionSize(actualExpression)
+                val isForString = isCharSequenceLength(actualExpression)
+                if (!(isForArrayOrCollection
+                            || (isForString && checkAssertedType(expression, ABSTRACT_CHAR_SEQUENCE_ASSERT_CLASSNAME)))
+                ) {
+                    return
+                }
+                registerConciseMethod(
+                    REMOVE_SIZE_DESCRIPTION_TEMPLATE,
+                    holder,
+                    expression,
+                    expression,
+                    MethodNames.HAS_SAME_SIZE_AS,
+                    ::ReplaceHasSizeMethodCallQuickFix
+                )
+            }
+        }
+    }
+
+    class Match(
+        val methodCall: PsiMethodCallExpression,
+        val replacementMethod: String,
+        val noExpectedExpression: Boolean = false,
+        val expectedIsCollection: Boolean = false
+    )
+}

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatStringExpressionInspection.kt

@@ -0,0 +1,75 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.codeInspection.ProblemsHolder
+import com.intellij.psi.*
+import com.siyeh.ig.callMatcher.CallMatcher
+import de.platon42.intellij.plugins.cajon.*
+import de.platon42.intellij.plugins.cajon.quickfixes.MoveOutMethodCallExpressionQuickFix
+
+class AssertThatStringExpressionInspection : AbstractAssertJInspection() {
+
+    companion object {
+        private const val DISPLAY_NAME = "Asserting a string specific expression"
+
+        private val MAPPINGS = listOf(
+            Mapping(
+                CallMatcher.instanceCall(CommonClassNames.JAVA_LANG_STRING, "isEmpty").parameterCount(0)!!,
+                MethodNames.IS_EMPTY, MethodNames.IS_NOT_EMPTY
+            ),
+            Mapping(
+                CallMatcher.anyOf(
+                    CallMatcher.instanceCall(CommonClassNames.JAVA_LANG_STRING, "equals").parameterCount(1)!!,
+                    CallMatcher.instanceCall(CommonClassNames.JAVA_LANG_STRING, "contentEquals").parameterCount(1)!!
+                ),
+                MethodNames.IS_EQUAL_TO, MethodNames.IS_NOT_EQUAL_TO
+            ),
+            Mapping(
+                CallMatcher.instanceCall(CommonClassNames.JAVA_LANG_STRING, "equalsIgnoreCase").parameterTypes(CommonClassNames.JAVA_LANG_STRING)!!,
+                MethodNames.IS_EQUAL_TO_IC, MethodNames.IS_NOT_EQUAL_TO_IC
+            ),
+            Mapping(
+                CallMatcher.instanceCall(CommonClassNames.JAVA_LANG_STRING, "contains").parameterCount(1)!!,
+                MethodNames.CONTAINS, MethodNames.DOES_NOT_CONTAIN
+            ),
+            Mapping(
+                CallMatcher.instanceCall(CommonClassNames.JAVA_LANG_STRING, "startsWith").parameterTypes(CommonClassNames.JAVA_LANG_STRING)!!,
+                MethodNames.STARTS_WITH, MethodNames.DOES_NOT_START_WITH
+            ),
+            Mapping(
+                CallMatcher.instanceCall(CommonClassNames.JAVA_LANG_STRING, "endsWith").parameterTypes(CommonClassNames.JAVA_LANG_STRING)!!,
+                MethodNames.ENDS_WITH, MethodNames.DOES_NOT_END_WITH
+            )
+        )
+    }
+
+    override fun getDisplayName() = DISPLAY_NAME
+
+    override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
+        return object : JavaElementVisitor() {
+            override fun visitExpressionStatement(statement: PsiExpressionStatement) {
+                super.visitExpressionStatement(statement)
+                if (!statement.hasAssertThat()) {
+                    return
+                }
+                val staticMethodCall = statement.findStaticMethodCall() ?: return
+                if (!ASSERT_THAT_BOOLEAN.test(staticMethodCall)) {
+                    return
+                }
+                val assertThatArgument = staticMethodCall.firstArg as? PsiMethodCallExpression ?: return
+                val mapping = MAPPINGS.firstOrNull { it.callMatcher.test(assertThatArgument) } ?: return
+
+                val expectedCallExpression = statement.findOutmostMethodCall() ?: return
+                val expectedResult = expectedCallExpression.getAllTheSameExpectedBooleanConstants() ?: return
+
+                val replacementMethod = if (expectedResult) mapping.replacementForTrue else mapping.replacementForFalse
+                registerMoveOutMethod(holder, expectedCallExpression, assertThatArgument, replacementMethod, ::MoveOutMethodCallExpressionQuickFix)
+            }
+        }
+    }
+
+    private class Mapping(
+        val callMatcher: CallMatcher,
+        val replacementForTrue: String,
+        val replacementForFalse: String
+    )
+}

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatStringIsEmptyInspection.kt

@@ -4,8 +4,11 @@ import com.intellij.codeInspection.ProblemsHolder
 import com.intellij.psi.JavaElementVisitor
 import com.intellij.psi.PsiElementVisitor
 import com.intellij.psi.PsiMethodCallExpression
+import com.intellij.psi.PsiStatement
 import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.ABSTRACT_CHAR_SEQUENCE_ASSERT_CLASSNAME
 import de.platon42.intellij.plugins.cajon.MethodNames
+import de.platon42.intellij.plugins.cajon.calculateConstantParameterValue
+import de.platon42.intellij.plugins.cajon.hasAssertThat
 
 class AssertThatStringIsEmptyInspection : AbstractAssertJInspection() {
 
@@ -19,9 +22,13 @@ class AssertThatStringIsEmptyInspection : AbstractAssertJInspection() {
         return object : JavaElementVisitor() {
             override fun visitMethodCallExpression(expression: PsiMethodCallExpression) {
                 super.visitMethodCallExpression(expression)
+                if (!expression.hasAssertThat()) {
+                    return
+                }
                 val isEqual = IS_EQUAL_TO_OBJECT.test(expression)
                 val hasSize = HAS_SIZE.test(expression)
-                if (!(isEqual || hasSize)) {
+                val isLastExpression = expression.parent is PsiStatement
+                if (!((isEqual || hasSize) && isLastExpression)) {
                     return
                 }
 
@@ -29,7 +36,7 @@ class AssertThatStringIsEmptyInspection : AbstractAssertJInspection() {
                     return
                 }
 
-                val value = calculateConstantParameterValue(expression, 0) ?: return
+                val value = expression.calculateConstantParameterValue(0) ?: return
                 if ((isEqual && (value == "")) || (hasSize && (value == 0))) {
                     registerSimplifyMethod(holder, expression, MethodNames.IS_EMPTY)
                 }

src/main/java/de/platon42/intellij/plugins/cajon/inspections/AssumeThatInsteadOfReturnInspection.kt

@@ -0,0 +1,146 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.codeInspection.ProblemHighlightType
+import com.intellij.codeInspection.ProblemsHolder
+import com.intellij.psi.*
+import de.platon42.intellij.plugins.cajon.hasAssertThat
+import de.platon42.intellij.plugins.cajon.quickfixes.ReplaceIfByAssumeThatQuickFix
+
+class AssumeThatInsteadOfReturnInspection : AbstractAssertJInspection() {
+
+    companion object {
+        private const val DISPLAY_NAME = "Replace conditional test exits by assumeThat() statements with same actual expression"
+        private const val REPLACE_RETURN_BY_ASSUME_THAT_DESCRIPTION = "Conditional return should probably be an assumeThat() statement instead"
+
+        private const val MAX_RECURSION_DEPTH = 5
+        private const val MAX_STATEMENTS_COUNT = 50
+
+        private val TEST_ANNOTATIONS = listOf(
+            "org.junit.Test",
+            "org.junit.jupiter.api.Test",
+            "org.junit.jupiter.api.TestTemplate",
+            "org.junit.jupiter.api.params.ParameterizedTest"
+        )
+
+        private fun hasEmptyReturn(statement: PsiStatement): Boolean {
+            return when (statement) {
+                is PsiBlockStatement -> {
+                    val psiReturnStatement = (statement.firstChild as? PsiCodeBlock)?.statements?.singleOrNull() as? PsiReturnStatement
+                    (psiReturnStatement != null) && (psiReturnStatement.returnValue == null)
+                }
+                is PsiReturnStatement -> statement.returnValue == null
+                else -> false
+            }
+        }
+
+        private fun registerProblem(holder: ProblemsHolder, isOnTheFly: Boolean, statement: PsiStatement, removeElse: Boolean) {
+            val problemDescriptor = holder.manager.createProblemDescriptor(
+                statement,
+                statement,
+                REPLACE_RETURN_BY_ASSUME_THAT_DESCRIPTION,
+                ProblemHighlightType.GENERIC_ERROR_OR_WARNING,
+                isOnTheFly,
+                ReplaceIfByAssumeThatQuickFix(removeElse)
+            )
+            holder.registerProblem(problemDescriptor)
+        }
+    }
+
+    override fun getDisplayName() = DISPLAY_NAME
+
+    override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
+        return object : JavaElementVisitor() {
+            override fun visitMethod(method: PsiMethod) {
+                super.visitMethod(method)
+                if (TEST_ANNOTATIONS.none(method::hasAnnotation)) {
+                    return
+                }
+                val containingClass = method.containingClass ?: return
+                val visitor: PsiElementVisitor = TestMethodVisitor(holder, isOnTheFly, containingClass)
+                method.accept(visitor)
+            }
+        }
+    }
+
+    class TestMethodVisitor(
+        private val holder: ProblemsHolder,
+        private val isOnTheFly: Boolean,
+        private val containingClass: PsiClass
+    ) : JavaRecursiveElementWalkingVisitor() {
+
+        private var contSearch = true
+
+        override fun visitExpressionStatement(statement: PsiExpressionStatement) {
+            if (contSearch) {
+                val methodCallExpression = statement.expression as? PsiMethodCallExpression
+                if (methodCallExpression != null) {
+                    if (methodCallExpression.hasAssertThat()) {
+                        contSearch = false
+                    } else {
+                        val method = methodCallExpression.resolveMethod()
+                        if (method?.containingClass == containingClass) {
+                            val recursionVisitor = CheckForAssertThatCallsVisitor(containingClass, 1)
+                            method.accept(recursionVisitor)
+                            if (recursionVisitor.aborted || recursionVisitor.foundAssertThat) {
+                                contSearch = false
+                            }
+                        }
+                    }
+                }
+            }
+            if (contSearch) {
+                super.visitExpressionStatement(statement)
+            }
+        }
+
+        override fun visitIfStatement(statement: PsiIfStatement) {
+            if (contSearch) {
+                checkBranch(statement, statement.thenBranch, false)
+                checkBranch(statement, statement.elseBranch, true)
+            }
+        }
+
+        private fun checkBranch(statement: PsiIfStatement, branch: PsiStatement?, removeElse: Boolean) {
+            if (branch != null) {
+                if (hasEmptyReturn(branch)) {
+                    registerProblem(holder, isOnTheFly, statement, removeElse)
+                } else {
+                    branch.accept(TestMethodVisitor(holder, isOnTheFly, containingClass))
+                }
+            }
+        }
+    }
+
+    class CheckForAssertThatCallsVisitor(private val containingClass: PsiClass, private var depth: Int) : JavaRecursiveElementWalkingVisitor() {
+        var foundAssertThat = false
+        private var statementCount = 0
+        var aborted = false
+
+        override fun visitExpressionStatement(statement: PsiExpressionStatement) {
+            if (foundAssertThat || aborted) {
+                return
+            }
+            if (++statementCount > MAX_STATEMENTS_COUNT) {
+                aborted = true
+                return
+            }
+            super.visitExpressionStatement(statement)
+            val methodCallExpression = statement.expression as? PsiMethodCallExpression
+            if (methodCallExpression != null) {
+                foundAssertThat = methodCallExpression.hasAssertThat()
+                val method = methodCallExpression.resolveMethod()
+                if (method?.containingClass == containingClass) {
+                    if (depth < MAX_RECURSION_DEPTH) {
+                        val recursionVisitor = CheckForAssertThatCallsVisitor(containingClass, depth + 1)
+                        method.accept(recursionVisitor)
+                        foundAssertThat = recursionVisitor.foundAssertThat
+                        statementCount += recursionVisitor.statementCount
+                        aborted = recursionVisitor.aborted
+                    } else {
+                        aborted = true
+                    }
+                }
+            }
+        }
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/inspections/JUnitAssertToAssertJInspection.kt

@@ -16,6 +16,8 @@ class JUnitAssertToAssertJInspection : AbstractJUnitAssertInspection() {
 
     companion object {
         private const val DISPLAY_NAME = "Convert JUnit assertions to AssertJ"
+        private const val CONVERT_MESSAGE_TEMPLATE = "%s can be converted to AssertJ style"
+        private const val CONVERT_DESCRIPTION_TEMPLATE = "Convert %s() to assertThat().%s()"
 
         private val MAPPINGS = listOf(
             Mapping(
@@ -142,7 +144,7 @@ class JUnitAssertToAssertJInspection : AbstractJUnitAssertInspection() {
         quickFixSupplier: (String, String) -> LocalQuickFix
     ) {
         val originalMethod = getOriginalMethodName(expression) ?: return
-        val description = REPLACE_DESCRIPTION_TEMPLATE.format(originalMethod, replacementMethod)
+        val description = CONVERT_DESCRIPTION_TEMPLATE.format(originalMethod, replacementMethod)
         val message = CONVERT_MESSAGE_TEMPLATE.format(originalMethod)
         val quickfix = quickFixSupplier(description, replacementMethod)
         holder.registerProblem(expression, message, quickfix)

src/main/java/de/platon42/intellij/plugins/cajon/inspections/JoinAssertThatStatementsInspection.kt

@@ -0,0 +1,93 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.codeInspection.ProblemHighlightType
+import com.intellij.codeInspection.ProblemsHolder
+import com.intellij.psi.*
+import com.intellij.psi.util.PsiTreeUtil
+import com.siyeh.ig.psiutils.TrackingEquivalenceChecker
+import de.platon42.intellij.plugins.cajon.*
+import de.platon42.intellij.plugins.cajon.quickfixes.JoinStatementsQuickFix
+
+class JoinAssertThatStatementsInspection : AbstractAssertJInspection() {
+
+    companion object {
+        private const val DISPLAY_NAME = "Join multiple assertThat() statements with same actual expression"
+        private const val CAN_BE_JOINED_DESCRIPTION = "Multiple assertThat() statements can be joined together"
+    }
+
+    override fun getDisplayName() = DISPLAY_NAME
+
+    override fun buildVisitor(holder: ProblemsHolder, isOnTheFly: Boolean): PsiElementVisitor {
+        return object : JavaElementVisitor() {
+            override fun visitCodeBlock(block: PsiCodeBlock) {
+                super.visitCodeBlock(block)
+                var lastActualExpression: PsiExpression? = null
+                var sameCount = 0
+                var firstStatement: PsiStatement? = null
+                var lastStatement: PsiStatement? = null
+                val equivalenceChecker = TrackingEquivalenceChecker()
+                for (statement in block.statements) {
+                    val assertThatCall = isLegitAssertThatCall(statement)
+                    var reset = true
+                    var actualExpression: PsiExpression? = null
+                    if (assertThatCall != null) {
+                        reset = (lastActualExpression == null)
+                        actualExpression = assertThatCall.firstArg
+                        if (!reset) {
+                            val isSame = when (actualExpression) {
+                                is PsiMethodCallExpression -> equivalenceChecker.expressionsAreEquivalent(actualExpression, lastActualExpression)
+                                        && PsiTreeUtil.findChildrenOfAnyType(
+                                    actualExpression,
+                                    false,
+                                    PsiMethodCallExpression::class.java
+                                ).none { KNOWN_METHODS_WITH_SIDE_EFFECTS.test(it) }
+                                else -> equivalenceChecker.expressionsAreEquivalent(actualExpression, lastActualExpression)
+                            }
+                            if (isSame) {
+                                sameCount++
+                                lastStatement = statement
+                            } else {
+                                reset = true
+                            }
+                        }
+                    }
+                    if (reset) {
+                        if (sameCount > 1) {
+                            registerProblem(holder, isOnTheFly, firstStatement!!, lastStatement!!)
+                        }
+                        firstStatement = statement
+                        lastStatement = null
+                        lastActualExpression = actualExpression
+                        sameCount = 1
+                    }
+                }
+                if (sameCount > 1) {
+                    registerProblem(holder, isOnTheFly, firstStatement!!, lastStatement!!)
+                }
+            }
+
+            private fun isLegitAssertThatCall(statement: PsiStatement?): PsiMethodCallExpression? {
+                if ((statement is PsiExpressionStatement) && (statement.expression is PsiMethodCallExpression)) {
+                    if (!statement.hasAssertThat()) {
+                        return null
+                    }
+                    val assertThatCall = PsiTreeUtil.findChildrenOfType(statement, PsiMethodCallExpression::class.java).find { ALL_ASSERT_THAT_MATCHERS.test(it) }
+                    return assertThatCall?.takeIf { it.findFluentCallTo(EXTRACTING_CALL_MATCHERS) == null }
+                }
+                return null
+            }
+        }
+    }
+
+    private fun registerProblem(holder: ProblemsHolder, isOnTheFly: Boolean, firstStatement: PsiStatement, lastStatement: PsiStatement) {
+        val problemDescriptor = holder.manager.createProblemDescriptor(
+            firstStatement,
+            lastStatement,
+            CAN_BE_JOINED_DESCRIPTION,
+            ProblemHighlightType.GENERIC_ERROR_OR_WARNING,
+            isOnTheFly,
+            JoinStatementsQuickFix()
+        )
+        holder.registerProblem(problemDescriptor)
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/AbstractCommonQuickFix.kt

@@ -4,6 +4,7 @@ import com.intellij.codeInspection.LocalQuickFix
 
 abstract class AbstractCommonQuickFix(private val description: String) : LocalQuickFix {
 
-    override fun getFamilyName() = description
+    override fun getName() = description
 
+    override fun getFamilyName() = description
 }

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/ForGuavaPostFix.kt

@@ -8,12 +8,13 @@ import com.intellij.psi.util.PsiTreeUtil
 import de.platon42.intellij.plugins.cajon.*
 
 class ForGuavaPostFix {
+
     companion object {
         val REPLACE_BY_GUAVA_ASSERT_THAT_AND_STATIC_IMPORT: (Project, ProblemDescriptor) -> Unit = exit@
         { _, descriptor ->
             val element = descriptor.startElement
             val statement = PsiTreeUtil.getParentOfType(element, PsiStatement::class.java) ?: return@exit
-            val assertThatCall = PsiTreeUtil.findChildrenOfType(statement, PsiMethodCallExpression::class.java).find { CORE_ASSERT_THAT_MATCHER.test(it) } ?: return@exit
+            val assertThatCall = statement.findStaticMethodCall() ?: return@exit
 
             val newMethodCall = createGuavaAssertThat(element, assertThatCall.firstArg)
             newMethodCall.resolveMethod()?.addAsStaticImport(element, AssertJClassNames.ASSERTIONS_CLASSNAME)

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/InvertUnaryStatementQuickFix.kt

@@ -0,0 +1,37 @@
+package de.platon42.intellij.plugins.cajon.quickfixes
+
+import com.intellij.codeInspection.ProblemDescriptor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiMethodCallExpression
+import com.intellij.psi.PsiUnaryExpression
+import com.intellij.psi.util.PsiTreeUtil
+import com.intellij.psi.util.PsiUtil
+import de.platon42.intellij.plugins.cajon.*
+
+class InvertUnaryStatementQuickFix : AbstractCommonQuickFix(INVERT_CONDITION_DESCRIPTION) {
+
+    companion object {
+        private const val INVERT_CONDITION_DESCRIPTION = "Invert condition in assertThat()"
+    }
+
+    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
+        val outmostCallExpression = descriptor.startElement as? PsiMethodCallExpression ?: return
+        val assertThatMethodCall = outmostCallExpression.findStaticMethodCall() ?: return
+        val assertExpression = assertThatMethodCall.firstArg as? PsiUnaryExpression ?: return
+        val operand = PsiUtil.skipParenthesizedExprDown(assertExpression.operand) ?: return
+        assertExpression.replace(operand)
+
+        var methodCall: PsiMethodCallExpression? = assertThatMethodCall
+        while (methodCall != null) {
+            val expectedResult = methodCall.getExpectedBooleanResult()
+            val nextMethodCall = PsiTreeUtil.getParentOfType(methodCall, PsiMethodCallExpression::class.java)
+            if (expectedResult != null) {
+                val replacementMethod = expectedResult.map(MethodNames.IS_FALSE, MethodNames.IS_TRUE)
+                val expectedExpression = createExpectedMethodCall(methodCall, replacementMethod)
+                expectedExpression.replaceQualifierFromMethodCall(methodCall)
+                methodCall.replace(expectedExpression)
+            }
+            methodCall = nextMethodCall
+        }
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/JoinStatementsQuickFix.kt

@@ -0,0 +1,53 @@
+package de.platon42.intellij.plugins.cajon.quickfixes
+
+import com.intellij.codeInspection.ProblemDescriptor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.*
+import com.intellij.psi.util.PsiTreeUtil
+import de.platon42.intellij.plugins.cajon.findStaticMethodCall
+import de.platon42.intellij.plugins.cajon.shortenAndReformat
+
+class JoinStatementsQuickFix : AbstractCommonQuickFix(JOIN_STATEMENTS_MESSAGE) {
+
+    companion object {
+        private const val JOIN_STATEMENTS_MESSAGE = "Join assertThat() statements"
+    }
+
+    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
+        val firstStatement = descriptor.startElement as PsiExpressionStatement
+        val lastStatement = descriptor.endElement as PsiExpressionStatement
+        do {
+            val commentsToKeep = ArrayList<PsiComment>()
+            val stuffToDelete = ArrayList<PsiElement>()
+            var previousStatement = lastStatement.prevSibling ?: throw IllegalStateException("Internal error")
+            while (previousStatement !is PsiExpressionStatement) {
+                if (previousStatement is PsiComment) {
+                    commentsToKeep.add(previousStatement.copy() as PsiComment)
+                }
+                stuffToDelete.add(previousStatement)
+                previousStatement = previousStatement.prevSibling ?: throw IllegalStateException("Internal error")
+            }
+            stuffToDelete.forEach { if (it.isValid) it.delete() }
+
+            val statementComments = PsiTreeUtil.getChildrenOfAnyType(previousStatement, PsiComment::class.java)
+            commentsToKeep.addAll(statementComments)
+
+            val assertThatCallOfCursorStatement = lastStatement.findStaticMethodCall() ?: throw IllegalStateException("Internal error")
+
+            val lastElementBeforeConcat = assertThatCallOfCursorStatement.parent
+            commentsToKeep.forEach {
+                lastElementBeforeConcat.addAfter(it, lastElementBeforeConcat.firstChild)
+                val newLineNode =
+                    PsiParserFacade.SERVICE.getInstance(project).createWhiteSpaceFromText("\n\t")
+
+                lastElementBeforeConcat.addAfter(newLineNode, lastElementBeforeConcat.firstChild)
+            }
+
+            val newLeaf = previousStatement.firstChild
+            assertThatCallOfCursorStatement.replace(newLeaf)
+            previousStatement.delete()
+        } while (previousStatement !== firstStatement)
+        val codeBlock = PsiTreeUtil.getParentOfType(lastStatement, PsiCodeBlock::class.java) ?: return
+        codeBlock.shortenAndReformat()
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/MoveOutInstanceOfExpressionQuickFix.kt

@@ -0,0 +1,44 @@
+package de.platon42.intellij.plugins.cajon.quickfixes
+
+import com.intellij.codeInspection.ProblemDescriptor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.JavaPsiFacade
+import com.intellij.psi.PsiInstanceOfExpression
+import com.intellij.psi.PsiMethodCallExpression
+import com.intellij.psi.util.PsiUtil
+import de.platon42.intellij.plugins.cajon.*
+
+class MoveOutInstanceOfExpressionQuickFix(description: String, private val replacementMethod: String) : AbstractCommonQuickFix(description) {
+
+    companion object {
+        private const val REMOVE_INSTANCEOF_DESCRIPTION = "Move instanceof in actual expressions out of assertThat()"
+    }
+
+    override fun getFamilyName(): String {
+        return REMOVE_INSTANCEOF_DESCRIPTION
+    }
+
+    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
+        val outmostCallExpression = descriptor.startElement as? PsiMethodCallExpression ?: return
+        val assertThatMethodCall = outmostCallExpression.findStaticMethodCall() ?: return
+        val assertExpression = assertThatMethodCall.firstArg as? PsiInstanceOfExpression ?: return
+        val expectedClass = assertExpression.checkType ?: return
+
+        val methodsToFix = assertThatMethodCall.collectMethodCallsUpToStatement()
+            .filter { it.getExpectedBooleanResult() != null }
+            .toList()
+
+        val factory = JavaPsiFacade.getElementFactory(project)
+        val classObjectAccess = factory.createExpressionFromText("${expectedClass.type.canonicalText}.class", null)
+
+        val operand = PsiUtil.deparenthesizeExpression(assertExpression.operand) ?: return
+        assertExpression.replace(operand)
+
+        methodsToFix
+            .forEach {
+                val expectedExpression = createExpectedMethodCall(it, replacementMethod, classObjectAccess)
+                expectedExpression.replaceQualifierFromMethodCall(it)
+                it.replace(expectedExpression)
+            }
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/MoveOutMethodCallExpressionQuickFix.kt

@@ -0,0 +1,37 @@
+package de.platon42.intellij.plugins.cajon.quickfixes
+
+import com.intellij.codeInspection.ProblemDescriptor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiMethodCallExpression
+import de.platon42.intellij.plugins.cajon.*
+
+class MoveOutMethodCallExpressionQuickFix(description: String, private val replacementMethod: String) : AbstractCommonQuickFix(description) {
+
+    companion object {
+        private const val REMOVE_ACTUAL_EXPRESSION_DESCRIPTION = "Move method calls in actual expressions out of assertThat()"
+    }
+
+    override fun getFamilyName(): String {
+        return REMOVE_ACTUAL_EXPRESSION_DESCRIPTION
+    }
+
+    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
+        val outmostCallExpression = descriptor.startElement as? PsiMethodCallExpression ?: return
+        val assertThatMethodCall = outmostCallExpression.findStaticMethodCall() ?: return
+        val assertExpression = assertThatMethodCall.firstArg as? PsiMethodCallExpression ?: return
+        val assertExpressionArg = assertExpression.getArgOrNull(0)?.copy()
+
+        val methodsToFix = assertThatMethodCall.collectMethodCallsUpToStatement()
+            .filter { it.getExpectedBooleanResult() != null }
+            .toList()
+
+        assertExpression.replace(assertExpression.qualifierExpression)
+
+        methodsToFix
+            .forEach {
+                val expectedExpression = createExpectedMethodCall(it, replacementMethod, *listOfNotNull(assertExpressionArg).toTypedArray())
+                expectedExpression.replaceQualifierFromMethodCall(it)
+                it.replace(expectedExpression)
+            }
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/QuickFixWithPostfixDelegate.kt

@@ -9,6 +9,10 @@ class QuickFixWithPostfixDelegate(
     private val postfix: (Project, ProblemDescriptor) -> Unit
 ) : LocalQuickFix by mainFix {
 
+    override fun getName(): String {
+        return mainFix.name
+    }
+
     override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
         mainFix.applyFix(project, descriptor)
         postfix(project, descriptor)

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/RemoveActualOutmostMethodCallQuickFix.kt

@@ -11,16 +11,29 @@ class RemoveActualOutmostMethodCallQuickFix(
     private val noExpectedExpression: Boolean = false
 ) : AbstractCommonQuickFix(description) {
 
+    companion object {
+        private const val REMOVE_ACTUAL_EXPRESSION_DESCRIPTION = "Remove method calls in actual expressions and use better assertion"
+    }
+
+    override fun getFamilyName(): String {
+        return REMOVE_ACTUAL_EXPRESSION_DESCRIPTION
+    }
+
     override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
-        val element = descriptor.startElement
-        val methodCallExpression = element as? PsiMethodCallExpression ?: return
-        val assertExpression = methodCallExpression.firstArg as? PsiMethodCallExpression ?: return
+        val outmostCallExpression = descriptor.startElement as? PsiMethodCallExpression ?: return
+        val assertThatMethodCall = outmostCallExpression.findStaticMethodCall() ?: return
+        val assertExpression = assertThatMethodCall.firstArg as? PsiMethodCallExpression ?: return
+
+        val methodsToFix = assertThatMethodCall.gatherAssertionCalls()
+
         assertExpression.replace(assertExpression.qualifierExpression)
 
-        val oldExpectedExpression = element.findOutmostMethodCall() ?: return
-        val args = if (noExpectedExpression) emptyArray() else oldExpectedExpression.argumentList.expressions
-        val expectedExpression = createExpectedMethodCall(element, replacementMethod, *args)
-        expectedExpression.replaceQualifierFromMethodCall(oldExpectedExpression)
-        oldExpectedExpression.replace(expectedExpression)
+        methodsToFix
+            .forEach {
+                val args = if (noExpectedExpression) emptyArray() else it.argumentList.expressions
+                val expectedExpression = createExpectedMethodCall(it, replacementMethod, *args)
+                expectedExpression.replaceQualifierFromMethodCall(it)
+                it.replace(expectedExpression)
+            }
     }
 }

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/ReplaceHasSizeMethodCallQuickFix.kt

@@ -0,0 +1,35 @@
+package de.platon42.intellij.plugins.cajon.quickfixes
+
+import com.intellij.codeInspection.ProblemDescriptor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.PsiExpression
+import com.intellij.psi.PsiMethodCallExpression
+import com.intellij.psi.PsiReferenceExpression
+import de.platon42.intellij.plugins.cajon.createExpectedMethodCall
+import de.platon42.intellij.plugins.cajon.firstArg
+import de.platon42.intellij.plugins.cajon.qualifierExpression
+import de.platon42.intellij.plugins.cajon.replaceQualifierFromMethodCall
+
+class ReplaceHasSizeMethodCallQuickFix(description: String, private val replacementMethod: String) : AbstractCommonQuickFix(description) {
+
+    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
+        val methodCallExpression = descriptor.startElement as? PsiMethodCallExpression ?: return
+
+        replaceCollectionSizeOrArrayLength(methodCallExpression.firstArg)
+
+        val expectedExpression = createExpectedMethodCall(methodCallExpression, replacementMethod, methodCallExpression.firstArg)
+
+        expectedExpression.replaceQualifierFromMethodCall(methodCallExpression)
+        methodCallExpression.replace(expectedExpression)
+    }
+
+    private fun replaceCollectionSizeOrArrayLength(assertExpression: PsiExpression) {
+        assertExpression.replace(
+            when (assertExpression) {
+                is PsiReferenceExpression -> assertExpression.qualifierExpression!!
+                is PsiMethodCallExpression -> assertExpression.qualifierExpression
+                else -> return
+            }
+        )
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/ReplaceIfByAssumeThatQuickFix.kt

@@ -0,0 +1,49 @@
+package de.platon42.intellij.plugins.cajon.quickfixes
+
+import com.intellij.codeInspection.ProblemDescriptor
+import com.intellij.openapi.project.Project
+import com.intellij.psi.JavaPsiFacade
+import com.intellij.psi.PsiBlockStatement
+import com.intellij.psi.PsiDeclarationStatement
+import com.intellij.psi.PsiIfStatement
+import de.platon42.intellij.plugins.cajon.*
+
+class ReplaceIfByAssumeThatQuickFix(private val removeElse: Boolean) : AbstractCommonQuickFix(REPLACE_IF_MESSAGE) {
+
+    companion object {
+        private const val REPLACE_IF_MESSAGE = "Replace if statement by assumeTrue()"
+    }
+
+    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
+        val ifStatement = descriptor.startElement as PsiIfStatement
+
+        val condition = ifStatement.condition ?: return
+        val factory = JavaPsiFacade.getElementFactory(ifStatement.project)
+        val assumptionExpression = if (removeElse) MethodNames.IS_TRUE else MethodNames.IS_FALSE
+        val assumeThatStatement = factory.createStatementFromText(
+            "${AssertJClassNames.ASSUMPTIONS_CLASSNAME}.${MethodNames.ASSUME_THAT}(true).$assumptionExpression();",
+            ifStatement
+        )
+        val assumeThatMethodCall = assumeThatStatement.findStaticMethodCall() ?: return
+        assumeThatMethodCall.firstArg.replace(condition)
+        assumeThatMethodCall.resolveMethod()?.addAsStaticImport(ifStatement)
+
+        val branchToKeep = (if (removeElse) ifStatement.thenBranch else ifStatement.elseBranch)?.copy()
+        val parentBlock = ifStatement.parent
+        if (branchToKeep != null) {
+            val anchorElement = ifStatement.nextSibling
+            if (branchToKeep is PsiBlockStatement) {
+                val codeBlock = branchToKeep.codeBlock
+                val hasDeclarations = codeBlock.statements.any { it is PsiDeclarationStatement }
+                if (hasDeclarations) {
+                    parentBlock.addAfter(branchToKeep, anchorElement)
+                } else {
+                    parentBlock.addRangeAfter(codeBlock.firstBodyElement, codeBlock.lastBodyElement, anchorElement)
+                }
+            } else {
+                parentBlock.addAfter(branchToKeep, anchorElement)
+            }
+        }
+        ifStatement.replace(assumeThatStatement).shortenAndReformat()
+    }
+}

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/ReplaceJUnitAssertMethodCallQuickFix.kt

@@ -10,6 +10,14 @@ import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.GUAVA_ASSE
 class ReplaceJUnitAssertMethodCallQuickFix(description: String, private val replacementMethod: String, private val noExpectedExpression: Boolean) :
     AbstractCommonQuickFix(description) {
 
+    companion object {
+        private const val CONVERT_DESCRIPTION = "Convert JUnit assertions to assertJ"
+    }
+
+    override fun getFamilyName(): String {
+        return CONVERT_DESCRIPTION
+    }
+
     override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
         val element = descriptor.startElement
         val methodCallExpression = element as? PsiMethodCallExpression ?: return

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/ReplaceJUnitDeltaAssertMethodCallQuickFix.kt

@@ -8,6 +8,14 @@ import de.platon42.intellij.plugins.cajon.AssertJClassNames.Companion.GUAVA_ASSE
 
 class ReplaceJUnitDeltaAssertMethodCallQuickFix(description: String, private val replacementMethod: String) : AbstractCommonQuickFix(description) {
 
+    companion object {
+        private const val CONVERT_DESCRIPTION = "Convert JUnit assertions to assertJ"
+    }
+
+    override fun getFamilyName(): String {
+        return CONVERT_DESCRIPTION
+    }
+
     override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
         val element = descriptor.startElement
         val methodCallExpression = element as? PsiMethodCallExpression ?: return

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/ReplaceSimpleMethodCallQuickFix.kt

@@ -6,10 +6,15 @@ import com.intellij.psi.PsiMethodCallExpression
 import de.platon42.intellij.plugins.cajon.createExpectedMethodCall
 import de.platon42.intellij.plugins.cajon.replaceQualifierFromMethodCall
 
-class ReplaceSimpleMethodCallQuickFix(
-    description: String,
-    private val replacementMethod: String
-) : AbstractCommonQuickFix(description) {
+class ReplaceSimpleMethodCallQuickFix(description: String, private val replacementMethod: String) : AbstractCommonQuickFix(description) {
+
+    companion object {
+        private const val REPLACE_DESCRIPTION = "Replace methods by better ones"
+    }
+
+    override fun getFamilyName(): String {
+        return REPLACE_DESCRIPTION
+    }
 
     override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
         val element = descriptor.startElement

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/ReplaceSizeMethodCallQuickFix.kt

@@ -14,22 +14,29 @@ class ReplaceSizeMethodCallQuickFix(
     private val expectedIsCollection: Boolean = false
 ) : AbstractCommonQuickFix(description) {
 
-    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
-        val element = descriptor.startElement
-        val methodCallExpression = element as? PsiMethodCallExpression ?: return
-        val assertExpression = methodCallExpression.firstArg
-        replaceCollectionSizeOrArrayLength(assertExpression)
-        val oldExpectedExpression = element.findOutmostMethodCall() ?: return
-
-        if (expectedIsCollection) {
-            replaceCollectionSizeOrArrayLength(oldExpectedExpression.firstArg)
+    companion object {
+        private const val REPLACE_DESCRIPTION = "Replace methods by better ones"
     }
 
-        val args = if (noExpectedExpression) emptyArray() else arrayOf(oldExpectedExpression.firstArg)
-        val expectedExpression = createExpectedMethodCall(element, replacementMethod, *args)
+    override fun getFamilyName(): String {
+        return REPLACE_DESCRIPTION
+    }
 
-        expectedExpression.replaceQualifierFromMethodCall(oldExpectedExpression)
-        oldExpectedExpression.replace(expectedExpression)
+    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
+        val outmostCallExpression = descriptor.startElement as? PsiMethodCallExpression ?: return
+        val assertThatMethodCall = outmostCallExpression.findStaticMethodCall() ?: return
+        val assertExpression = assertThatMethodCall.firstArg
+        replaceCollectionSizeOrArrayLength(assertExpression)
+
+        if (expectedIsCollection) {
+            replaceCollectionSizeOrArrayLength(outmostCallExpression.firstArg)
+        }
+
+        val args = if (noExpectedExpression) emptyArray() else arrayOf(outmostCallExpression.firstArg)
+        val expectedExpression = createExpectedMethodCall(outmostCallExpression, replacementMethod, *args)
+
+        expectedExpression.replaceQualifierFromMethodCall(outmostCallExpression)
+        outmostCallExpression.replace(expectedExpression)
     }
 
     private fun replaceCollectionSizeOrArrayLength(assertExpression: PsiExpression) {

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/SplitBinaryExpressionMethodCallQuickFix.kt

@@ -4,10 +4,7 @@ import com.intellij.codeInspection.ProblemDescriptor
 import com.intellij.openapi.project.Project
 import com.intellij.psi.PsiBinaryExpression
 import com.intellij.psi.PsiMethodCallExpression
-import de.platon42.intellij.plugins.cajon.createExpectedMethodCall
-import de.platon42.intellij.plugins.cajon.findOutmostMethodCall
-import de.platon42.intellij.plugins.cajon.firstArg
-import de.platon42.intellij.plugins.cajon.replaceQualifierFromMethodCall
+import de.platon42.intellij.plugins.cajon.*
 
 class SplitBinaryExpressionMethodCallQuickFix(
     description: String,
@@ -16,17 +13,33 @@ class SplitBinaryExpressionMethodCallQuickFix(
     private val noExpectedExpression: Boolean = false
 ) : AbstractCommonQuickFix(description) {
 
+    companion object {
+        private const val SPLIT_EXPRESSION_DESCRIPTION = "Split binary expressions out of assertThat()"
+    }
+
+    override fun getFamilyName(): String {
+        return SPLIT_EXPRESSION_DESCRIPTION
+    }
+
     override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
-        val element = descriptor.startElement
-        val methodCallExpression = element as? PsiMethodCallExpression ?: return
-        val binaryExpression = methodCallExpression.firstArg as? PsiBinaryExpression ?: return
+        val outmostCallExpression = descriptor.startElement as? PsiMethodCallExpression ?: return
+        val assertThatMethodCall = outmostCallExpression.findStaticMethodCall() ?: return
+
+        val methodsToFix = assertThatMethodCall.collectMethodCallsUpToStatement()
+            .filter { it.getExpectedBooleanResult() != null }
+            .toList()
+
+        val binaryExpression = assertThatMethodCall.firstArg as? PsiBinaryExpression ?: return
         val expectedArgument = (if (pickRightOperand) binaryExpression.lOperand else binaryExpression.rOperand)?.copy() ?: return
         binaryExpression.replace(if (pickRightOperand) binaryExpression.rOperand!! else binaryExpression.lOperand)
 
-        val oldExpectedExpression = element.findOutmostMethodCall() ?: return
         val args = if (noExpectedExpression) emptyArray() else arrayOf(expectedArgument)
-        val expectedExpression = createExpectedMethodCall(element, replacementMethod, *args)
-        expectedExpression.replaceQualifierFromMethodCall(oldExpectedExpression)
-        oldExpectedExpression.replace(expectedExpression)
+
+        methodsToFix
+            .forEach {
+                val expectedExpression = createExpectedMethodCall(it, replacementMethod, *args)
+                expectedExpression.replaceQualifierFromMethodCall(it)
+                it.replace(expectedExpression)
+            }
     }
 }

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/SplitEqualsExpressionMethodCallQuickFix.kt

@@ -1,22 +0,0 @@
-package de.platon42.intellij.plugins.cajon.quickfixes
-
-import com.intellij.codeInspection.ProblemDescriptor
-import com.intellij.openapi.project.Project
-import com.intellij.psi.PsiMethodCallExpression
-import de.platon42.intellij.plugins.cajon.*
-
-class SplitEqualsExpressionMethodCallQuickFix(description: String, private val replacementMethod: String) : AbstractCommonQuickFix(description) {
-
-    override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
-        val element = descriptor.startElement
-        val methodCallExpression = element as? PsiMethodCallExpression ?: return
-        val equalsMethodCall = methodCallExpression.firstArg as? PsiMethodCallExpression ?: return
-        val expectedArgument = equalsMethodCall.firstArg.copy()
-        equalsMethodCall.replace(equalsMethodCall.qualifierExpression)
-
-        val oldExpectedExpression = element.findOutmostMethodCall() ?: return
-        val expectedExpression = createExpectedMethodCall(element, replacementMethod, expectedArgument)
-        expectedExpression.replaceQualifierFromMethodCall(oldExpectedExpression)
-        oldExpectedExpression.replace(expectedExpression)
-    }
-}

src/main/java/de/platon42/intellij/plugins/cajon/quickfixes/UnwrapExpectedStaticMethodCallQuickFix.kt

@@ -8,7 +8,15 @@ import de.platon42.intellij.plugins.cajon.findOutmostMethodCall
 import de.platon42.intellij.plugins.cajon.firstArg
 import de.platon42.intellij.plugins.cajon.replaceQualifierFromMethodCall
 
-class RemoveExpectedOutmostMethodCallQuickFix(description: String, private val replacementMethod: String) : AbstractCommonQuickFix(description) {
+class UnwrapExpectedStaticMethodCallQuickFix(description: String, private val replacementMethod: String) : AbstractCommonQuickFix(description) {
+
+    companion object {
+        private const val REMOVE_EXPECTED_OUTMOST_DESCRIPTION = "Unwrap expected expressions and use better assertion"
+    }
+
+    override fun getFamilyName(): String {
+        return REMOVE_EXPECTED_OUTMOST_DESCRIPTION
+    }
 
     override fun applyFix(project: Project, descriptor: ProblemDescriptor) {
         val element = descriptor.startElement

src/main/java/de/platon42/intellij/plugins/cajon/references/ExtractorReferenceContributor.kt

@@ -7,21 +7,14 @@ import com.intellij.psi.*
 import com.intellij.psi.util.PropertyUtilBase
 import com.intellij.psi.util.PsiTreeUtil
 import com.intellij.psi.util.PsiTypesUtil
+import com.intellij.util.ArrayUtil
 import com.intellij.util.ProcessingContext
 import com.siyeh.ig.callMatcher.CallMatcher
-import de.platon42.intellij.plugins.cajon.AssertJClassNames
-import de.platon42.intellij.plugins.cajon.CORE_ASSERT_THAT_MATCHER
-import de.platon42.intellij.plugins.cajon.firstArg
+import de.platon42.intellij.plugins.cajon.*
 
 class ExtractorReferenceContributor : PsiReferenceContributor() {
 
     companion object {
-
-        private val EXTRACTING_FROM_OBJECT = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_OBJECT_ASSERT_CLASSNAME, "extracting")
-        private val EXTRACTING_FROM_ITERABLE = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_ITERABLE_ASSERT_CLASSNAME, "extracting")
-        private val FLAT_EXTRACTING_FROM_ITERABLE = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_ITERABLE_ASSERT_CLASSNAME, "flatExtracting")
-        private val EXTRACTING_RESULT_OF_FROM_ITERABLE = CallMatcher.instanceCall(AssertJClassNames.ABSTRACT_ITERABLE_ASSERT_CLASSNAME, "extractingResultOf")
-
         private val BY_NAME = CallMatcher.staticCall(AssertJClassNames.EXTRACTORS_CLASSNAME, "byName")
         private val RESULT_OF = CallMatcher.staticCall(AssertJClassNames.EXTRACTORS_CLASSNAME, "resultOf")
             .parameterTypes(CommonClassNames.JAVA_LANG_STRING)!!
@@ -57,9 +50,8 @@ class ExtractorReferenceContributor : PsiReferenceContributor() {
         }
 
         private fun findActualType(element: PsiElement): PsiClassType? {
-            val assertThatCall = PsiTreeUtil.findChildrenOfType(element, PsiMethodCallExpression::class.java)
-                .find { CORE_ASSERT_THAT_MATCHER.test(it) } ?: return null
-            return assertThatCall.firstArg.type as? PsiClassType
+            val assertThatCall = element.findStaticMethodCall()
+            return assertThatCall?.firstArg?.type as? PsiClassType
         }
 
         private fun findAndCreateReferences(element: PsiElement, finder: (PsiLiteralExpression) -> List<Pair<TextRange, List<PsiElement>>>?): Array<PsiReference> {
@@ -81,6 +73,10 @@ class ExtractorReferenceContributor : PsiReferenceContributor() {
     class ExtractorReference(literal: PsiLiteralExpression, range: TextRange, private val targets: List<PsiElement>) :
         PsiPolyVariantReferenceBase<PsiLiteralExpression>(literal, range, true) {
 
+        override fun getVariants(): Array<Any> {
+            return ArrayUtil.EMPTY_OBJECT_ARRAY
+        }
+
         override fun resolve(): PsiElement? {
             return multiResolve(false).map(ResolveResult::getElement).firstOrNull()
         }

src/main/resources/META-INF/plugin.xml

@@ -5,13 +5,14 @@
 
     <description><![CDATA[
     Cajon is an IntelliJ IDEA Plugin for shortening and optimizing AssertJ assertions.
-    It adds inspections and quick fixes to fully make use of the AssertJ methods
-    to make the intention clear and concise. It can also convert JUnit 4 assertions to AssertJ.
+    It adds several inspections and quick fixes to fully use the fluent assertion methods
+    and thus makes the intention clear and concise, also generating better messages on test failures.
+    It can also be used to convert JUnit 4 assertions to AssertJ.
     It supports referencing inside extracting()-methods with strings, adding refactoring safety.
     ]]></description>
 
     <!-- please see http://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/build_number_ranges.html for description -->
-    <idea-version since-build="173.2290.1"/>
+    <idea-version since-build="173.2696.26"/>
 
     <!-- please see http://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/plugin_compatibility.html
          on how to target different products -->
@@ -23,8 +24,12 @@
         <psi.referenceContributor implementation="de.platon42.intellij.plugins.cajon.references.ExtractorReferenceContributor"/>
         <localInspection groupPath="Java" shortName="AssertThatObjectIsNullOrNotNull" enabledByDefault="true" level="WARNING"
                          implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatObjectIsNullOrNotNullInspection"/>
-        <localInspection groupPath="Java" shortName="AssertThatBooleanIsTrueOrFalse" enabledByDefault="true" level="WARNING"
-                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatBooleanIsTrueOrFalseInspection"/>
+        <localInspection groupPath="Java" shortName="AssertThatBooleanCondition" enabledByDefault="true" level="WARNING"
+                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatBooleanConditionInspection"/>
+        <localInspection groupPath="Java" shortName="AssertThatInvertedBooleanCondition" enabledByDefault="true" level="WARNING"
+                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatInvertedBooleanConditionInspection"/>
+        <localInspection groupPath="Java" shortName="AssertThatInstanceOf" enabledByDefault="true" level="WARNING"
+                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatInstanceOfInspection"/>
         <localInspection groupPath="Java" shortName="AssertThatStringIsEmpty" enabledByDefault="true" level="WARNING"
                          implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatStringIsEmptyInspection"/>
         <localInspection groupPath="Java" shortName="AssertThatEnumerableIsEmpty" enabledByDefault="true" level="WARNING"
@@ -33,8 +38,15 @@
         <localInspection groupPath="Java" shortName="AssertThatSize" enabledByDefault="true" level="WARNING"
                          implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatSizeInspection"/>
 
-        <localInspection groupPath="Java" shortName="AssertThatBinaryExpressionIsTrueOrFalse" enabledByDefault="true" level="WARNING"
-                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatBinaryExpressionIsTrueOrFalseInspection"/>
+        <localInspection groupPath="Java" shortName="AssertThatBinaryExpression" enabledByDefault="true" level="WARNING"
+                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatBinaryExpressionInspection"/>
+        <localInspection groupPath="Java" shortName="AssertThatStringExpression" enabledByDefault="true" level="WARNING"
+                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatStringExpressionInspection"/>
+
+        <localInspection groupPath="Java" shortName="JoinAssertThatStatements" enabledByDefault="true" level="WARNING"
+                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.JoinAssertThatStatementsInspection"/>
+        <localInspection groupPath="Java" shortName="AssumeThatInsteadOfReturnInspection" enabledByDefault="true" level="WARNING"
+                         implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssumeThatInsteadOfReturnInspection"/>
 
         <localInspection groupPath="Java" shortName="AssertThatJava8Optional" enabledByDefault="true" level="WARNING"
                          implementationClass="de.platon42.intellij.plugins.cajon.inspections.AssertThatJava8OptionalInspection"/>

src/main/resources/inspectionDescriptions/AssertThatBooleanCondition.html

@@ -2,6 +2,6 @@
 <body>
 Turns assertThat(condition).isEqualTo(true/false) into assertThat(condition).isTrue()/isFalse().
 <!-- tooltip end -->
-Also works with constant expressions and Boolean.TRUE/FALSE.
+<br>Also works with constant expressions and Boolean.TRUE/FALSE.
 </body>
 </html>

src/main/resources/inspectionDescriptions/AssertThatGuavaOptional.html

@@ -3,6 +3,6 @@
 Looks at expected and actual expression being of Guava Optional type and whether the statement effectively tries to assert the
 presence, absence or content and then replaces the statement by isPresent(), isAbsent(), or contains().
 <!-- tooltip end -->
-Requires AssertJ-Guava to be in classpath.
+<br>Requires AssertJ-Guava to be in classpath.
 </body>
 </html>

src/main/resources/inspectionDescriptions/AssertThatInstanceOf.html

@@ -0,0 +1,7 @@
+<html>
+<body>
+Turns assertThat(object instanceof classname).isEqualTo(true/false) into assertThat(object).is(Not)InstanceOf(classname.class).
+<!-- tooltip end -->
+<br>Also works with constant expressions and Boolean.TRUE/FALSE.
+</body>
+</html>

src/main/resources/inspectionDescriptions/AssertThatInvertedBooleanCondition.html

@@ -0,0 +1,7 @@
+<html>
+<body>
+Turns assertThat(!condition).isEqualTo(true/false) into assertThat(condition).isFalse()/isTrue().
+<!-- tooltip end -->
+<br>Also works with constant expressions and Boolean.TRUE/FALSE.
+</body>
+</html>

src/main/resources/inspectionDescriptions/AssertThatSize.html

@@ -1,6 +1,7 @@
 <html>
 <body>
-Makes assertions on sizes of arrays or collections more concise by replacing them with isEmpty(), isNotEmpty(), hasSize(), or hasSameSizeAs().
+Makes assertions on sizes of arrays, collections, strings, or CharSequences more concise by replacing them with isEmpty(), isNotEmpty(), hasSize(), or hasSameSizeAs().
 <!-- tooltip end -->
+<br>Several more conversions are available with AssertJ 13.2.0 or later.
 </body>
 </html>

src/main/resources/inspectionDescriptions/AssertThatStringExpression.html

@@ -0,0 +1,7 @@
+<html>
+<body>
+Turns assertThat(string.someMethod(arg)).isTrue/isFalse() into assertThat(string).someMethod(arg).
+<!-- tooltip end -->
+<br>someMethod() can be equals(), equalsIgnoreCase(), contentEquals(), contains(), startsWith(), and endsWith().
+</body>
+</html>

src/main/resources/inspectionDescriptions/AssumeThatInsteadOfReturn.html

@@ -0,0 +1,18 @@
+<html>
+<body>
+Tries to detect bogus uses of return statements in test methods and replaces them by assumeThat() calls.
+<!-- tooltip end -->
+<br>
+Novices will use these to skip test execution by bailing out early on some preconditions not met.
+However, this suggests that the test has actually been run and passed instead of showing the test
+as being skipped.
+<p>Return statements in if statements in main test methods
+    (must be annotated with JUnit 4 or Jupiter @Test annotations)
+    will be verified to have at least one assertThat() statement in the code flow.
+    Method calls within the same class will be examined for assertThat() statements, too.
+    However, at most 50 statements and down to five recursions will be tolerated before giving up.
+</p>
+<p>Currently, the quickfix may lose some comments during operation. The other branch of the if statement
+    will be inlined (blocks with declarations will remain a code block due to variable scope).</p>
+</body>
+</html>

src/main/resources/inspectionDescriptions/JUnitAssertToAssertJ.html

@@ -1,10 +1,11 @@
 <html>
 <body>
-Tries to convert most of the JUnit 4 assertions to AssertJ-Format.
+Tries to convert most of the JUnit 4 assertions to AssertJ format.
 <!-- tooltip end -->
 <br>Works for assertTrue(), assertFalse(), assertNull(), assertNotNull(), assertEquals(), assertNotEquals(), assertSame() assertNotSame(), assertArrayEquals().
 Copes with variants with message and without, handles special versions for double and float types (including arrays).
-<p></p>
+<p>
     Does not support Hamcrest-Matchers. If you need that kind of conversion, you might want to check out the Assertions2AssertJ plugin by Ric Emery.
+</p>
 </body>
 </html>

src/main/resources/inspectionDescriptions/JoinAssertThatStatements.html

@@ -0,0 +1,7 @@
+<html>
+<body>
+Joins consecutive assertThat() statements with the same actual expression together.
+<!-- tooltip end -->
+<br>Retains comments during operation. If the AssertThat()-Statement contains .extracting() methods, they will not be joined.
+</body>
+</html>

src/test/java/de/platon42/intellij/playground/Playground.java

@@ -1,370 +0,0 @@
-package de.platon42.intellij.playground;
-
-import org.assertj.core.api.ListAssert;
-import org.assertj.core.data.Offset;
-import org.assertj.core.extractor.Extractors;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-import java.util.Optional;
-
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.assertj.core.data.Offset.offset;
-import static org.assertj.guava.api.Assertions.assertThat;
-import static org.junit.Assert.*;
-
-public class Playground {
-
-    private void sizeOfList() {
-        assertThat("string").as("foo").hasSize(0);
-        assertThat(new StringBuilder()).as("bar").hasSize(0);
-        ListAssert<String> etc = assertThat(new ArrayList<String>()).as("etc");
-        etc.hasSize(0);
-        assertThat(new Long[1]).as("etc").hasSize(0);
-
-        assertThat("string").as("foo").isEmpty();
-        assertThat(new StringBuilder()).as("bar").isEmpty();
-        assertThat(new ArrayList<Long>()).as("etc").isEmpty();
-        assertThat(new Long[1]).as("etc").isEmpty();
-
-        assertThat(new ArrayList<>().size()).isEqualTo(1);
-        assertThat(new ArrayList<String>().size()).isEqualTo(1);
-        assertThat(new ArrayList<String>().size()).isGreaterThanOrEqualTo(1);
-        assertThat(new ArrayList<String>().size()).isZero();
-        assertThat(new ArrayList<String>()).hasSizeGreaterThan(1);
-        assertThat(new ArrayList<String>()).hasSameSizeAs(new ArrayList<>());
-        assertThat(new Long[1]).as("etc").hasSameSizeAs(new Long[2]);
-    }
-
-    private void sizeOfArray() {
-        assertThat(new String[1].length).isLessThanOrEqualTo(1);
-        assertThat(new String[1]).hasSameSizeAs(new Object());
-        assertThat("").isEqualTo(null);
-        assertThat(true).isTrue();
-        assertThat(true).isEqualTo(true);
-        assertThat(Boolean.TRUE).isEqualTo(Boolean.FALSE);
-        assertThat(Boolean.TRUE).isEqualTo(true);
-    }
-
-    private void booleanIsTrueOrFalse() {
-        boolean primitive = false;
-        Boolean object = java.lang.Boolean.TRUE;
-
-        assertThat(primitive).isEqualTo(Boolean.TRUE);
-        assertThat(primitive).isEqualTo(Boolean.FALSE);
-        assertThat(object).isEqualTo(Boolean.TRUE);
-        assertThat(object).isEqualTo(Boolean.FALSE);
-        assertThat(primitive).isEqualTo(true);
-        assertThat(primitive).isEqualTo(false);
-        assertThat(object).isEqualTo(true);
-        assertThat(object).isEqualTo(false);
-
-        assertThat(primitive).isNotEqualTo(Boolean.TRUE);
-        assertThat(primitive).isNotEqualTo(Boolean.FALSE);
-        assertThat(object).isNotEqualTo(Boolean.TRUE);
-        assertThat(object).isNotEqualTo(Boolean.FALSE);
-        assertThat(primitive).isNotEqualTo(true);
-        assertThat(primitive).isNotEqualTo(false);
-        assertThat(object).isNotEqualTo(true);
-        assertThat(object).isNotEqualTo(false);
-
-        assertThat(primitive).as("nah").isEqualTo(true && !true);
-        assertThat(object).isEqualTo(Boolean.TRUE && !Boolean.TRUE);
-
-        assertThat("").isEqualTo(Boolean.TRUE);
-    }
-
-    private void binaryExpression() {
-        int primExp = 42;
-        int primAct = 1337;
-        Double numberObjExp = 42.0;
-        Double numberObjAct = 1337.0;
-        String stringExp = "foo";
-        String stringAct = "bar";
-
-        assertThat(primAct == primExp).isTrue();
-        assertThat(primAct == 1).isTrue();
-        assertThat(primAct == primExp).isEqualTo(false);
-        assertThat(primAct != primExp).isEqualTo(true);
-        assertThat(1 != primAct).isTrue();
-        assertThat(primAct != primExp).isNotEqualTo(true);
-        assertThat(primAct > primExp).isNotEqualTo(false);
-        assertThat(primAct > primExp).isFalse();
-        assertThat(primAct > 1).isFalse();
-        assertThat(primAct >= 1).isTrue();
-        assertThat(primAct >= primExp).isEqualTo(false);
-        assertThat(1 <= primAct).isFalse();
-        assertThat(1 > primAct).isTrue();
-        assertThat(primAct < primExp).isNotEqualTo(true);
-        assertThat(primAct <= primExp).isNotEqualTo(false);
-        assertThat(primAct <= primExp).isFalse();
-        assertThat(primAct <= 1).isFalse();
-        assertThat(numberObjAct == 1).isTrue();
-        assertThat(numberObjAct == numberObjExp).isEqualTo(false);
-        assertThat(numberObjAct != numberObjExp).isEqualTo(true);
-        assertThat(1 != numberObjAct).isTrue();
-        assertThat(numberObjAct != numberObjExp).isNotEqualTo(true);
-        assertThat(numberObjAct > numberObjExp).isNotEqualTo(false);
-        assertThat(numberObjAct > 1).isFalse();
-        assertThat(numberObjAct >= numberObjExp).isTrue();
-        assertThat(numberObjAct >= numberObjExp).isEqualTo(false);
-        assertThat(1 <= numberObjAct).isFalse();
-        assertThat(numberObjAct < numberObjExp).isEqualTo(true);
-        assertThat(numberObjAct < numberObjExp).isNotEqualTo(true);
-        assertThat(numberObjAct <= numberObjExp).isNotEqualTo(false);
-        assertThat(numberObjAct <= 1).isFalse();
-        assertThat(numberObjAct.equals(numberObjExp)).isFalse();
-        assertThat(stringAct == stringExp).isNotEqualTo(false);
-        assertThat(stringAct.equals(stringExp)).isEqualTo(true);
-        assertThat(stringAct != stringExp).isFalse();
-        assertThat(stringAct == null).isNotEqualTo(true);
-        assertThat(null == stringAct).isEqualTo(false);
-
-        assertThat(null == null).isTrue();
-        assertThat(!false).isTrue();
-    }
-
-    private void stringStuff() {
-        String foo = "bar";
-        assertThat(foo).isEqualTo("");
-        assertThat(foo).hasSize(0);
-        assertThat(foo.contains("foobar")).isTrue();
-        assertThat(foo).contains("foobar");
-        assertThat(foo.startsWith("foobar")).isTrue();
-        assertThat(foo).startsWith("foobar");
-        assertThat(foo.endsWith("foobar")).isTrue();
-        assertThat(foo).endsWith("foobar");
-        assertThat(foo.equalsIgnoreCase("foo")).isTrue();
-        assertThat(foo).isEqualToIgnoringCase("foo");
-
-        assertThat(foo.contains("foobar")).isFalse();
-        assertThat(foo).doesNotContain("foobar");
-        assertThat(foo.startsWith("foobar")).isFalse();
-        assertThat(foo).doesNotStartWith("foobar");
-        assertThat(foo.endsWith("foobar")).isFalse();
-        assertThat(foo).doesNotEndWith("foobar");
-        assertThat(foo.equalsIgnoreCase("foo")).isFalse();
-        assertThat(foo).isNotEqualToIgnoringCase("foo");
-    }
-
-    private void java8Optional() {
-        Optional<String> opt = Optional.empty();
-
-        assertThat(opt.isPresent()).isEqualTo(true);
-        assertThat(opt.isPresent()).isEqualTo(Boolean.TRUE);
-        assertThat(opt.isPresent()).isNotEqualTo(false);
-        assertThat(opt.isPresent()).isNotEqualTo(Boolean.FALSE);
-        assertThat(opt.isPresent()).isTrue();
-
-        assertThat(opt.isPresent()).isEqualTo(false);
-        assertThat(opt.isPresent()).isEqualTo(Boolean.FALSE);
-        assertThat(opt.isPresent()).isNotEqualTo(true);
-        assertThat(opt.isPresent()).isNotEqualTo(Boolean.TRUE);
-        assertThat(opt.isPresent()).isFalse();
-
-        assertThat(opt.get()).isEqualTo("foo");
-        assertThat(opt.get()).isSameAs("foo");
-
-        assertThat(opt).isEqualTo(Optional.of("foo"));
-        assertThat(opt).isEqualTo(Optional.ofNullable("foo"));
-        assertThat(opt).isNotEqualTo(Optional.of("foo"));
-        assertThat(opt).isNotEqualTo(Optional.ofNullable("foo"));
-
-        assertThat(opt).isEqualTo(Optional.empty());
-        assertThat(opt).isNotEqualTo(Optional.empty());
-        assertThat(opt).isPresent();
-    }
-
-    private void assertThatGuavaOptional() {
-        com.google.common.base.Optional<String> opt = com.google.common.base.Optional.absent();
-
-        assertThat(opt.isPresent()).isEqualTo(true);
-        assertThat(opt.isPresent()).isEqualTo(Boolean.TRUE);
-        assertThat(opt.isPresent()).isNotEqualTo(false);
-        assertThat(opt.isPresent()).isNotEqualTo(Boolean.FALSE);
-        assertThat(opt.isPresent()).isTrue();
-
-        assertThat(opt.isPresent()).isEqualTo(false);
-        assertThat(opt.isPresent()).isEqualTo(Boolean.FALSE);
-        assertThat(opt.isPresent()).isNotEqualTo(true);
-        assertThat(opt.isPresent()).isNotEqualTo(Boolean.TRUE);
-        assertThat(opt.isPresent()).isFalse();
-
-        assertThat(opt.get()).isEqualTo("foo");
-        assertThat(opt.get()).isSameAs("foo");
-        assertThat(opt.get()).isNotEqualTo("foo");
-        assertThat(opt.get()).isNotSameAs("foo");
-
-        assertThat(opt).isEqualTo(com.google.common.base.Optional.of("foo"));
-        assertThat(opt).isEqualTo(com.google.common.base.Optional.fromNullable("foo"));
-        assertThat(opt).isNotEqualTo(com.google.common.base.Optional.of("foo"));
-        assertThat(opt).isNotEqualTo(com.google.common.base.Optional.fromNullable("foo"));
-
-        assertThat(opt).isEqualTo(com.google.common.base.Optional.absent());
-        assertThat(opt).isNotEqualTo(com.google.common.base.Optional.absent());
-        assertThat(opt).isAbsent();
-    }
-
-    private void junitAssertions() {
-        assertTrue(true);
-        assertTrue("message", true);
-        assertFalse(true);
-        assertFalse("message", true);
-        assertEquals(1L, 2L);
-        assertEquals("message", 1L, 2L);
-        assertNotEquals(1L, 2L);
-        assertNotEquals("message", 1L, 2L);
-        assertEquals(4.0, 4.4, 3.3);
-        assertThat(3.0).isCloseTo(4.0, Offset.offset(2.3));
-        assertThat(new int[1]).isEqualTo(new int[2]);
-
-        String foo = "foo";
-        String bar = "bar";
-
-        assertTrue(foo == "foo");
-        assertTrue("oh no!", foo == "foo");
-        assertFalse(foo == "bar");
-        assertFalse("boom!", foo == "bar");
-
-        assertNull(foo);
-        assertNull("oh no!", foo);
-        assertNotNull(foo);
-        assertNotNull("oh no!", foo);
-
-        assertEquals(bar, foo);
-        assertEquals("equals", bar, foo);
-        assertNotEquals(bar, foo);
-        assertNotEquals("equals", bar, foo);
-
-        assertSame(bar, foo);
-        assertSame("same", bar, foo);
-        assertNotSame(bar, foo);
-        assertNotSame("same", bar, foo);
-
-        assertEquals(1.0, 2.0, 0.1);
-        assertEquals("equals", 1.0, 2.0, 0.1);
-        assertEquals(1.0f, 2.0f, 0.1f);
-        assertEquals("equals", 1.0f, 2.0f, 0.1f);
-
-        assertNotEquals(1.0, 2.0);
-        assertNotEquals(1.0, 2.0, 0.1);
-        assertNotEquals("equals", 1.0, 2.0);
-        assertNotEquals("equals", 1.0, 2.0, 0.1);
-        assertNotEquals(1.0f, 2.0f);
-        assertNotEquals(1.0f, 2.0f, 0.1f);
-        assertNotEquals("equals", 1.0f, 2.0f);
-        assertNotEquals("equals", 1.0f, 2.0f, 0.1f);
-
-        assertArrayEquals(new int[2], new int[1]);
-        assertArrayEquals("array equals", new int[2], new int[1]);
-
-        assertArrayEquals(new double[2], new double[1], 1.0);
-        assertArrayEquals("array equals", new double[2], new double[1], 1.0);
-        assertArrayEquals(new float[2], new float[1], 1.0f);
-        assertArrayEquals("array equals", new float[2], new float[1], 1.0f);
-
-
-        assertThat(foo == "foo").isTrue();
-        assertThat(foo == "foo").as("oh no!").isTrue();
-        assertThat(foo == "bar").isFalse();
-        assertThat(foo == "bar").as("boom!").isFalse();
-
-        assertThat(foo).isNull();
-        assertThat(foo).as("oh no!").isNull();
-        assertThat(foo).isNotNull();
-        assertThat(foo).as("oh no!").isNotNull();
-
-        assertThat(foo).isEqualTo(bar);
-        assertThat(foo).as("equals").isEqualTo(bar);
-        assertThat(foo).isNotEqualTo(bar);
-        assertThat(foo).as("equals").isNotEqualTo(bar);
-
-        assertThat(foo).isSameAs(bar);
-        assertThat(foo).as("same").isSameAs(bar);
-        assertThat(foo).isNotSameAs(bar);
-        assertThat(foo).as("same").isNotSameAs(bar);
-
-        assertThat(2.0).isEqualTo(1.0);
-        assertThat(2.0).isCloseTo(1.0, offset(0.1));
-        assertThat(2.0).as("equals").isEqualTo(1.0);
-        assertThat(2.0).as("equals").isCloseTo(1.0, offset(0.1));
-        assertThat(2.0f).isEqualTo(1.0f);
-        assertThat(2.0f).isCloseTo(1.0f, offset(0.1f));
-        assertThat(2.0f).as("equals").isEqualTo(1.0f);
-        assertThat(2.0f).as("equals").isCloseTo(1.0f, offset(0.1f));
-
-        assertThat(2.0).isNotEqualTo(1.0);
-        assertThat(2.0).isNotCloseTo(1.0, offset(0.1));
-        assertThat(2.0).as("equals").isNotEqualTo(1.0);
-        assertThat(2.0).as("equals").isNotCloseTo(1.0, offset(0.1));
-        assertThat(2.0f).isNotEqualTo(1.0f);
-        assertThat(2.0f).isNotCloseTo(1.0f, offset(0.1f));
-        assertThat(2.0f).as("equals").isNotEqualTo(1.0f);
-        assertThat(2.0f).as("equals").isNotCloseTo(1.0f, offset(0.1f));
-
-        assertThat(new int[1]).isEqualTo(new int[2]);
-        assertThat(new int[1]).as("array equals").isEqualTo(new int[2]);
-
-        assertThat(new double[1]).containsExactly(new double[2], offset(1.0));
-        assertThat(new double[1]).as("array equals").containsExactly(new double[2], offset(1.0));
-        assertThat(new float[1]).containsExactly(new float[2], offset(1.0f));
-        assertThat(new float[1]).as("array equals").containsExactly(new float[2], offset(1.0f));
-
-        assertThat(new Object()).extracting("toString");
-        assertThat(new Object()).extracting(Object::toString, Object::hashCode);
-    }
-
-
-    private void findReferences() {
-        Contact contact = new Contact();
-        List<Contact> contactList = Collections.emptyList();
-
-        assertThat(contact).extracting("name").isEqualTo("foo");
-        assertThat(contact).extracting("age", "country", "address.street", "street", "address.noMailings", "address.REALLYnoMAILINGS").containsExactly(1, "Elmst. 42");
-        assertThat(contact).extracting(Extractors.byName("name")).isEqualTo("foo");
-        assertThat(contact).extracting(Extractors.resultOf("getStreet")).isEqualTo("foo");
-        assertThat(contact).extracting(Extractors.resultOf("getStreet"), Extractors.byName("narf")).isEqualTo("foo");
-
-        assertThat(contactList).extracting("name").isEqualTo("foo");
-        assertThat(contactList).extracting("name", "moar").isEqualTo("foo");
-        assertThat(contactList).extracting("name", String.class).isEqualTo("foo");
-        assertThat(contactList).extracting(Extractors.byName("name")).isEqualTo("foo");
-        assertThat(contactList).extracting(Extractors.resultOf("getStreet"), Extractors.byName("narf")).isEqualTo("foo");
-        assertThat(contactList).extractingResultOf("getStreet").isEqualTo("foo");
-        assertThat(contactList).extractingResultOf("getStreet", String.class).isEqualTo("foo");
-        assertThat(contactList).flatExtracting("age", "address.street", "street").containsExactly(1, "Elmst. 42");
-        assertThat(contactList).flatExtracting("age").containsExactly(1, "Elmst. 42");
-    }
-
-    public class Contact {
-        private String name;
-        private Integer age;
-        private Address address;
-
-        public String getStreet() {
-            return address.getStreet();
-        }
-    }
-
-    public class Address {
-        private String street;
-        private String country;
-
-        public String getStreet() {
-            return street;
-        }
-
-        public String getCountry() {
-            return country;
-        }
-
-        public boolean isNoMailings() {
-            return true;
-        }
-
-        public Boolean getREALLYnoMAILINGS() {
-            return true;
-        }
-    }
-}

src/test/java/de/platon42/intellij/plugins/cajon/AbstractCajonTest.kt

@@ -11,13 +11,17 @@ import de.platon42.intellij.jupiter.TestDataPath
 import de.platon42.intellij.jupiter.TestJdk
 import org.assertj.core.api.Assertions
 import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.DisplayNameGeneration
+import org.junit.jupiter.api.DisplayNameGenerator
 import org.junit.jupiter.api.extension.ExtendWith
 import java.lang.reflect.InvocationTargetException
+import java.lang.reflect.Method
 
 @ExtendWith(LightCodeInsightExtension::class)
 @TestDataPath("src/test/resources")
 @TestJdk(LanguageLevel.JDK_1_8, annotations = true, useInternal = true)
 @AddLocalJarToModule(Assertions::class)
+@DisplayNameGeneration(AbstractCajonTest.CutOffFixtureDisplayNameGenerator::class)
 abstract class AbstractCajonTest {
 
     // See https://github.com/junit-team/junit5/issues/157, should be resolved with junit5 5.5 M2
@@ -60,8 +64,15 @@ abstract class AbstractCajonTest {
     }
 
     protected fun executeQuickFixes(myFixture: JavaCodeInsightTestFixture, regex: Regex, expectedFixes: Int) {
-        val quickfixes = myFixture.getAllQuickFixes().filter { it.familyName.matches(regex) }
-        assertThat(quickfixes).`as`("Fixes matched by $regex: ${myFixture.getAllQuickFixes().map { it.familyName }}").hasSize(expectedFixes)
+        val quickfixes = myFixture.getAllQuickFixes().filter { it.text.matches(regex) }
+        assertThat(quickfixes).`as`("Fixes matched by $regex: ${myFixture.getAllQuickFixes().map { it.text }}").hasSize(expectedFixes)
         quickfixes.forEach(myFixture::launchAction)
     }
+
+    class CutOffFixtureDisplayNameGenerator : DisplayNameGenerator.ReplaceUnderscores() {
+        override fun generateDisplayNameForMethod(testClass: Class<*>?, testMethod: Method?): String {
+            val nameForMethod = super.generateDisplayNameForMethod(testClass, testMethod)
+            return nameForMethod.substringBefore("$")
+        }
+    }
 }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatBinaryExpressionInspectionTest.kt

@@ -6,16 +6,16 @@ import de.platon42.intellij.jupiter.TestDataSubPath
 import de.platon42.intellij.plugins.cajon.AbstractCajonTest
 import org.junit.jupiter.api.Test
 
-internal class AssertThatBinaryExpressionIsTrueOrFalseInspectionTest : AbstractCajonTest() {
+internal class AssertThatBinaryExpressionInspectionTest : AbstractCajonTest() {
 
     @Test
     @TestDataSubPath("inspections/BinaryExpression")
     internal fun assertThat_of_binary_expression_can_be_moved_out(@MyFixture myFixture: JavaCodeInsightTestFixture) {
         runTest {
-            myFixture.enableInspections(AssertThatBinaryExpressionIsTrueOrFalseInspection::class.java)
+            myFixture.enableInspections(AssertThatBinaryExpressionInspection::class.java)
             myFixture.configureByFile("BinaryExpressionBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Split binary expression out of assertThat()"), 148)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Split equals() expression out of assertThat()"), 12)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Split binary expression out of assertThat()"), 149)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Split equals() expression out of assertThat()"), 13)
             myFixture.checkResultByFile("BinaryExpressionAfter.java")
         }
     }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatBooleanConditionInspectionTest.kt

@@ -6,19 +6,19 @@ import de.platon42.intellij.jupiter.TestDataSubPath
 import de.platon42.intellij.plugins.cajon.AbstractCajonTest
 import org.junit.jupiter.api.Test
 
-internal class AssertThatBooleanIsTrueOrFalseInspectionTest : AbstractCajonTest() {
+internal class AssertThatBooleanConditionInspectionTest : AbstractCajonTest() {
 
     @Test
-    @TestDataSubPath("inspections/BooleanIsTrueOrFalse")
+    @TestDataSubPath("inspections/BooleanCondition")
     internal fun assertThat_with_isEqualTo_true_or_false_can_use_isTrue_or_isFalse(@MyFixture myFixture: JavaCodeInsightTestFixture) {
         runTest {
-            myFixture.enableInspections(AssertThatBooleanIsTrueOrFalseInspection::class.java)
-            myFixture.configureByFile("BooleanIsTrueOrFalseBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isTrue()"), 4)
+            myFixture.enableInspections(AssertThatBooleanConditionInspection::class.java)
+            myFixture.configureByFile("BooleanConditionBefore.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isTrue()"), 6)
             executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isFalse()"), 5)
             executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotEqualTo() with isTrue()"), 4)
             executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotEqualTo() with isFalse()"), 4)
-            myFixture.checkResultByFile("BooleanIsTrueOrFalseAfter.java")
+            myFixture.checkResultByFile("BooleanConditionAfter.java")
         }
     }
 }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatEnumerableIsEmptyInspectionTest.kt

@@ -14,7 +14,7 @@ internal class AssertThatEnumerableIsEmptyInspectionTest : AbstractCajonTest() {
         runTest {
             myFixture.enableInspections(AssertThatEnumerableIsEmptyInspection::class.java)
             myFixture.configureByFile("EnumerableIsEmptyBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace hasSize() with isEmpty()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace hasSize() with isEmpty()"), 5)
             myFixture.checkResultByFile("EnumerableIsEmptyAfter.java")
         }
     }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatGuavaOptionalInspectionTest.kt

@@ -9,25 +9,21 @@ import org.assertj.core.api.Assertions
 import org.junit.jupiter.api.Test
 
 @AddLocalJarToModule(com.google.common.base.Optional::class, org.assertj.guava.api.Assertions::class, Assertions::class)
-@TestDataSubPath("inspections/AssertThatGuavaOptional")
+@TestDataSubPath("inspections/GuavaOptional")
 internal class AssertThatGuavaOptionalInspectionTest : AbstractCajonTest() {
 
     @Test
     internal fun assertThat_get_or_isPresent_for_Guava_Optional_can_be_simplified(@MyFixture myFixture: JavaCodeInsightTestFixture) {
         runTest {
             myFixture.enableInspections(AssertThatGuavaOptionalInspection::class.java)
-            myFixture.configureByFile("AssertThatGuavaOptionalBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isEqualTo() with isPresent()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isNotEqualTo() with isPresent()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotEqualTo() with isPresent()"), 3)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isEqualTo() with isAbsent()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isAbsent()"), 3)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isNotEqualTo() with isAbsent()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isTrue() with isPresent()"), 1)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isFalse() with isAbsent()"), 1)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isEqualTo() with contains()"), 1)
+            myFixture.configureByFile("GuavaOptionalBefore.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove isPresent() of actual expression and use assertThat().isPresent() instead"), 6)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove isPresent() of actual expression and use assertThat().isAbsent() instead"), 5)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove get() of actual expression and use assertThat().contains() instead"), 1)
             executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap expected expression and replace isEqualTo() with contains()"), 6)
-            myFixture.checkResultByFile("AssertThatGuavaOptionalAfter.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with Guava assertThat().isAbsent()"), 3)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotEqualTo() with Guava assertThat().isPresent()"), 3)
+            myFixture.checkResultByFile("GuavaOptionalAfter.java")
         }
     }
 
@@ -36,7 +32,8 @@ internal class AssertThatGuavaOptionalInspectionTest : AbstractCajonTest() {
         runTest {
             myFixture.enableInspections(AssertThatGuavaOptionalInspection::class.java)
             myFixture.configureByFile("WithoutPriorGuavaImportBefore.java")
-            executeQuickFixes(myFixture, Regex(".*eplace .* with .*"), 7)
+            executeQuickFixes(myFixture, Regex(".*eplace .* with .*"), 4)
+            executeQuickFixes(myFixture, Regex("Remove .*"), 3)
             myFixture.checkResultByFile("WithoutPriorGuavaImportAfter.java")
         }
     }
@@ -46,8 +43,9 @@ internal class AssertThatGuavaOptionalInspectionTest : AbstractCajonTest() {
         runTest {
             myFixture.enableInspections(AssertThatGuavaOptionalInspection::class.java)
             myFixture.configureByFile("WithoutPriorGuavaImportBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isAbsent()"), 1)
-            executeQuickFixes(myFixture, Regex(".*eplace .* with .*"), 6)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with Guava assertThat().isAbsent()"), 1)
+            executeQuickFixes(myFixture, Regex(".*eplace .* with .*"), 3)
+            executeQuickFixes(myFixture, Regex("Remove .*"), 3)
             myFixture.checkResultByFile("WithoutPriorGuavaImportAfter.java")
         }
     }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatInstanceOfInspectionTest.kt

@@ -0,0 +1,22 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
+import de.platon42.intellij.jupiter.MyFixture
+import de.platon42.intellij.jupiter.TestDataSubPath
+import de.platon42.intellij.plugins.cajon.AbstractCajonTest
+import org.junit.jupiter.api.Test
+
+internal class AssertThatInstanceOfInspectionTest : AbstractCajonTest() {
+
+    @Test
+    @TestDataSubPath("inspections/InstanceOf")
+    internal fun assertThat_with_instanceof_can_be_moved_out(@MyFixture myFixture: JavaCodeInsightTestFixture) {
+        runTest {
+            myFixture.enableInspections(AssertThatInstanceOfInspection::class.java)
+            myFixture.configureByFile("InstanceOfBefore.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove instanceof in actual expression and use assertThat().isInstanceOf() instead"), 6)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove instanceof in actual expression and use assertThat().isNotInstanceOf() instead"), 6)
+            myFixture.checkResultByFile("InstanceOfAfter.java")
+        }
+    }
+}

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatInvertedBooleanConditionInspectionTest.kt

@@ -0,0 +1,21 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
+import de.platon42.intellij.jupiter.MyFixture
+import de.platon42.intellij.jupiter.TestDataSubPath
+import de.platon42.intellij.plugins.cajon.AbstractCajonTest
+import org.junit.jupiter.api.Test
+
+internal class AssertThatInvertedBooleanConditionInspectionTest : AbstractCajonTest() {
+
+    @Test
+    @TestDataSubPath("inspections/InvertedBooleanCondition")
+    internal fun assertThat_with_inverted_boolean_condition_can_be_inverted(@MyFixture myFixture: JavaCodeInsightTestFixture) {
+        runTest {
+            myFixture.enableInspections(AssertThatInvertedBooleanConditionInspection::class.java)
+            myFixture.configureByFile("InvertedBooleanConditionBefore.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Invert condition in assertThat()"), 25)
+            myFixture.checkResultByFile("InvertedBooleanConditionAfter.java")
+        }
+    }
+}

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatJava8OptionalInspectionTest.kt

@@ -9,23 +9,19 @@ import org.junit.jupiter.api.Test
 internal class AssertThatJava8OptionalInspectionTest : AbstractCajonTest() {
 
     @Test
-    @TestDataSubPath("inspections/AssertThatJava8Optional")
+    @TestDataSubPath("inspections/Java8Optional")
     internal fun assertThat_get_or_isPresent_for_Java8_Optional_can_be_simplified(@MyFixture myFixture: JavaCodeInsightTestFixture) {
         runTest {
             myFixture.enableInspections(AssertThatJava8OptionalInspection::class.java)
-            myFixture.configureByFile("AssertThatJava8OptionalBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isEqualTo() with isPresent()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isNotEqualTo() with isPresent()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isEqualTo() with isNotPresent()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isNotEqualTo() with isNotPresent()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isTrue() with isPresent()"), 1)
+            myFixture.configureByFile("Java8OptionalBefore.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove isPresent() of actual expression and use assertThat().isPresent() instead"), 6)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove isPresent() of actual expression and use assertThat().isNotPresent() instead"), 5)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove get() of actual expression and use assertThat().contains() instead"), 1)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove get() of actual expression and use assertThat().containsSame() instead"), 1)
             executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isNotPresent()"), 1)
             executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotEqualTo() with isPresent()"), 1)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isFalse() with isNotPresent()"), 1)
             executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap expected expression and replace isEqualTo() with contains()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isEqualTo() with contains()"), 1)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Unwrap actual expression and replace isSameAs() with containsSame()"), 1)
-            myFixture.checkResultByFile("AssertThatJava8OptionalAfter.java")
+            myFixture.checkResultByFile("Java8OptionalAfter.java")
         }
     }
 }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatObjectIsNullOrNotNullInspectionTest.kt

@@ -14,8 +14,8 @@ internal class AssertThatObjectIsNullOrNotNullInspectionTest : AbstractCajonTest
         runTest {
             myFixture.enableInspections(AssertThatObjectIsNullOrNotNullInspection::class.java)
             myFixture.configureByFile("ObjectIsNullOrNotNullBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isNull()"), 3)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotEqualTo() with isNotNull()"), 3)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isNull()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotEqualTo() with isNotNull()"), 5)
             myFixture.checkResultByFile("ObjectIsNullOrNotNullAfter.java")
         }
     }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatSizeInspectionTest.kt

@@ -4,30 +4,35 @@ import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
 import de.platon42.intellij.jupiter.MyFixture
 import de.platon42.intellij.jupiter.TestDataSubPath
 import de.platon42.intellij.plugins.cajon.AbstractCajonTest
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.extrakting
 import org.junit.jupiter.api.Test
 
 internal class AssertThatSizeInspectionTest : AbstractCajonTest() {
 
     @Test
-    @TestDataSubPath("inspections/AssertThatSize")
+    @TestDataSubPath("inspections/Size")
     internal fun assertThat_size_of_array_or_collection_can_be_simplified(@MyFixture myFixture: JavaCodeInsightTestFixture) {
         runTest {
             myFixture.enableInspections(AssertThatSizeInspection::class.java)
-            myFixture.configureByFile("AssertThatSizeBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isEmpty()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isZero() with isEmpty()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotZero() with isNotEmpty()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isGreaterThan() with isNotEmpty()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isGreaterThanOrEqualTo() with isNotEmpty()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isLessThan() with isEmpty()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isLessThanOrEqualTo() with isEmpty()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with hasSameSizeAs()"), 4)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with hasSize()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isGreaterThan() with hasSizeGreaterThan()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isGreaterThanOrEqualTo() with hasSizeGreaterThanOrEqualTo()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isLessThan() with hasSizeLessThan()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isLessThanOrEqualTo() with hasSizeLessThanOrEqualTo()"), 2)
-            myFixture.checkResultByFile("AssertThatSizeAfter.java")
+            myFixture.configureByFile("SizeBefore.java")
+            assertThat(myFixture.doHighlighting()).extrakting { it.description }.containsOnlyOnce("Try to operate on the iterable itself rather than its size")
+
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isEmpty()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isZero() with isEmpty()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isNotZero() with isNotEmpty()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isGreaterThan() with isNotEmpty()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isGreaterThanOrEqualTo() with isNotEmpty()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isLessThan() with isEmpty()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isLessThanOrEqualTo() with isEmpty()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with hasSameSizeAs()"), 12)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with hasSize()"), 8)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isGreaterThan() with hasSizeGreaterThan()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isGreaterThanOrEqualTo() with hasSizeGreaterThanOrEqualTo()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isLessThan() with hasSizeLessThan()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isLessThanOrEqualTo() with hasSizeLessThanOrEqualTo()"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove size determination of expected expression and replace hasSize() with hasSameSizeAs()"), 14)
+            myFixture.checkResultByFile("SizeAfter.java")
         }
     }
 }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatStringExpressionInspectionTest.kt

@@ -0,0 +1,34 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
+import de.platon42.intellij.jupiter.MyFixture
+import de.platon42.intellij.jupiter.TestDataSubPath
+import de.platon42.intellij.plugins.cajon.AbstractCajonTest
+import org.junit.jupiter.api.Test
+
+internal class AssertThatStringExpressionInspectionTest : AbstractCajonTest() {
+
+    @Test
+    @TestDataSubPath("inspections/StringExpression")
+    internal fun assertThat_with_certain_String_methods(@MyFixture myFixture: JavaCodeInsightTestFixture) {
+        runTest {
+            myFixture.enableInspections(AssertThatStringExpressionInspection::class.java)
+            myFixture.configureByFile("StringExpressionBefore.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove isEmpty() of actual expression and use assertThat().isEmpty() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove equals() of actual expression and use assertThat().isEqualTo() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove equalsIgnoreCase() of actual expression and use assertThat().isEqualToIgnoringCase() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove contentEquals() of actual expression and use assertThat().isEqualTo() instead"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove contains() of actual expression and use assertThat().contains() instead"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove startsWith() of actual expression and use assertThat().startsWith() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove endsWith() of actual expression and use assertThat().endsWith() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove isEmpty() of actual expression and use assertThat().isNotEmpty() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove equals() of actual expression and use assertThat().isNotEqualTo() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove equalsIgnoreCase() of actual expression and use assertThat().isNotEqualToIgnoringCase() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove contentEquals() of actual expression and use assertThat().isNotEqualTo() instead"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove contains() of actual expression and use assertThat().doesNotContain() instead"), 4)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove startsWith() of actual expression and use assertThat().doesNotStartWith() instead"), 2)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Remove endsWith() of actual expression and use assertThat().doesNotEndWith() instead"), 3)
+            myFixture.checkResultByFile("StringExpressionAfter.java")
+        }
+    }
+}

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssertThatStringIsEmptyInspectionTest.kt

@@ -4,6 +4,8 @@ import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
 import de.platon42.intellij.jupiter.MyFixture
 import de.platon42.intellij.jupiter.TestDataSubPath
 import de.platon42.intellij.plugins.cajon.AbstractCajonTest
+import org.assertj.core.api.Assertions.assertThat
+import org.assertj.core.api.extrakting
 import org.junit.jupiter.api.Test
 
 internal class AssertThatStringIsEmptyInspectionTest : AbstractCajonTest() {
@@ -14,8 +16,13 @@ internal class AssertThatStringIsEmptyInspectionTest : AbstractCajonTest() {
         runTest {
             myFixture.enableInspections(AssertThatStringIsEmptyInspection::class.java)
             myFixture.configureByFile("StringIsEmptyBefore.java")
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isEmpty()"), 2)
-            executeQuickFixes(myFixture, Regex.fromLiteral("Replace hasSize() with isEmpty()"), 2)
+            val highlights = myFixture.doHighlighting()
+                .asSequence()
+                .filter { it.description?.contains(" can be simplified to") ?: false }
+                .toList()
+            assertThat(highlights).hasSize(6).extrakting { it.text }.doesNotContain("assertThat")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace isEqualTo() with isEmpty()"), 3)
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace hasSize() with isEmpty()"), 3)
             myFixture.checkResultByFile("StringIsEmptyAfter.java")
         }
     }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/AssumeThatInsteadOfReturnInspectionTest.kt

@@ -0,0 +1,24 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
+import de.platon42.intellij.jupiter.AddLocalJarToModule
+import de.platon42.intellij.jupiter.MyFixture
+import de.platon42.intellij.jupiter.TestDataSubPath
+import de.platon42.intellij.plugins.cajon.AbstractCajonTest
+import org.assertj.core.api.Assertions
+import org.junit.jupiter.api.Test
+
+@AddLocalJarToModule(Assertions::class, Test::class, org.junit.Test::class)
+internal class AssumeThatInsteadOfReturnInspectionTest : AbstractCajonTest() {
+
+    @Test
+    @TestDataSubPath("inspections/AssumeThat")
+    internal fun conditional_returns_can_be_replaced_by_assumeThat(@MyFixture myFixture: JavaCodeInsightTestFixture) {
+        runTest {
+            myFixture.enableInspections(AssumeThatInsteadOfReturnInspection::class.java)
+            myFixture.configureByFile("AssumeThatBefore.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Replace if statement by assumeTrue()"), 4)
+            myFixture.checkResultByFile("AssumeThatAfter.java")
+        }
+    }
+}

src/test/java/de/platon42/intellij/plugins/cajon/inspections/JUnitAssertToAssertJInspectionTest.kt

@@ -18,7 +18,7 @@ internal class JUnitAssertToAssertJInspectionTest : AbstractCajonTest() {
         runTest {
             myFixture.enableInspections(JUnitAssertToAssertJInspection::class.java)
             myFixture.configureByFile("JUnitAssertToAssertJInspectionBefore.java")
-            executeQuickFixes(myFixture, Regex("Replace .*"), 38)
+            executeQuickFixes(myFixture, Regex("Convert assert.*\\(\\) to assertThat\\(\\).*"), 38)
             myFixture.checkResultByFile("JUnitAssertToAssertJInspectionAfter.java")
         }
     }

src/test/java/de/platon42/intellij/plugins/cajon/inspections/JoinAssertThatStatementsInspectionTest.kt

@@ -0,0 +1,21 @@
+package de.platon42.intellij.plugins.cajon.inspections
+
+import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture
+import de.platon42.intellij.jupiter.MyFixture
+import de.platon42.intellij.jupiter.TestDataSubPath
+import de.platon42.intellij.plugins.cajon.AbstractCajonTest
+import org.junit.jupiter.api.Test
+
+internal class JoinAssertThatStatementsInspectionTest : AbstractCajonTest() {
+
+    @Test
+    @TestDataSubPath("inspections/JoinStatements")
+    internal fun assertThat_statements_can_be_joined_together(@MyFixture myFixture: JavaCodeInsightTestFixture) {
+        runTest {
+            myFixture.enableInspections(JoinAssertThatStatementsInspection::class.java)
+            myFixture.configureByFile("JoinStatementsBefore.java")
+            executeQuickFixes(myFixture, Regex.fromLiteral("Join assertThat() statements"), 5)
+            myFixture.checkResultByFile("JoinStatementsAfter.java")
+        }
+    }
+}

src/test/java/org/assertj/core/api/AssertJExtensions.kt

@@ -0,0 +1,19 @@
+package org.assertj.core.api
+
+import org.assertj.core.groups.FieldsOrPropertiesExtractor
+import java.util.*
+
+// Workaround for ambiguous method signature of .extracting() see https://github.com/joel-costigliola/assertj-core/issues/1499
+fun <SELF : AbstractIterableAssert<SELF, ACTUAL, ELEMENT, ELEMENT_ASSERT>,
+        ACTUAL : Iterable<ELEMENT>,
+        ELEMENT,
+        ELEMENT_ASSERT : AbstractAssert<ELEMENT_ASSERT, ELEMENT>,
+        V>
+        AbstractIterableAssert<SELF, ACTUAL, ELEMENT, ELEMENT_ASSERT>.extrakting(extractor: (ELEMENT) -> V): AbstractListAssert<*, List<V>, V, ObjectAssert<V>> {
+    val values = FieldsOrPropertiesExtractor.extract(actual, extractor)
+    if (actual is SortedSet<*>) {
+        usingDefaultElementComparator()
+    }
+    @Suppress("UNCHECKED_CAST")
+    return newListAssertInstance(values).withAssertionState(myself) as AbstractListAssert<*, List<V>, V, ObjectAssert<V>>
+}

src/test/resources/inspections/AssertThatSize/AssertThatSizeAfter.java

@@ -1,43 +0,0 @@
-import java.util.ArrayList;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
-public class AssertThatSize {
-
-    private void assertThatSize() {
-        ArrayList<String> list = new ArrayList<>();
-        ArrayList<String> otherList = new ArrayList<>();
-        long[] array = new long[5];
-        long[] otherArray = new long[4];
-
-        assertThat(list).isEmpty();
-        assertThat(list).isEmpty();
-        assertThat(list).isNotEmpty();
-        assertThat(list).as("hi").isNotEmpty();
-        assertThat(list).isNotEmpty();
-        assertThat(list).isEmpty();
-        assertThat(list).isEmpty();
-        assertThat(list).hasSameSizeAs(otherList);
-        assertThat(list).hasSameSizeAs(array);
-        assertThat(list).hasSize(1);
-        assertThat(list).hasSizeGreaterThan(list.size() * 2);
-        assertThat(list).hasSizeGreaterThanOrEqualTo(list.size() * 2);
-        assertThat(list).hasSizeLessThan(list.size() * 2);
-        assertThat(list).hasSizeLessThanOrEqualTo(list.size() * 2);
-
-        assertThat(array).isEmpty();
-        assertThat(array).isEmpty();
-        assertThat(array).isNotEmpty();
-        assertThat(array).as("hi").isNotEmpty();
-        assertThat(array).isNotEmpty();
-        assertThat(array).isEmpty();
-        assertThat(array).isEmpty();
-        assertThat(array).hasSameSizeAs(list);
-        assertThat(array).hasSameSizeAs(otherArray);
-        assertThat(array).hasSize(1);
-        assertThat(array).hasSizeGreaterThan(otherArray.length - 1);
-        assertThat(array).hasSizeGreaterThanOrEqualTo(otherArray.length + 1);
-        assertThat(array).hasSizeLessThan(otherArray.length - 3);
-        assertThat(array).hasSizeLessThanOrEqualTo(1 - otherArray.length);
-    }
-}

src/test/resources/inspections/AssertThatSize/AssertThatSizeBefore.java

@@ -1,43 +0,0 @@
-import java.util.ArrayList;
-
-import static org.assertj.core.api.Assertions.assertThat;
-
-public class AssertThatSize {
-
-    private void assertThatSize() {
-        ArrayList<String> list = new ArrayList<>();
-        ArrayList<String> otherList = new ArrayList<>();
-        long[] array = new long[5];
-        long[] otherArray = new long[4];
-
-        assertThat(list.size()).isEqualTo(0);
-        assertThat(list.size()).isZero();
-        assertThat(list.size()).isNotZero();
-        assertThat(list.size()).as("hi").isGreaterThan(0);
-        assertThat(list.size()).isGreaterThanOrEqualTo(1);
-        assertThat(list.size()).isLessThan(1);
-        assertThat(list.size()).isLessThanOrEqualTo(0);
-        assertThat(list.size()).isEqualTo(otherList.size());
-        assertThat(list.size()).isEqualTo(array.length);
-        assertThat(list.size()).isEqualTo(1);
-        assertThat(list.size()).isGreaterThan(list.size() * 2);
-        assertThat(list.size()).isGreaterThanOrEqualTo(list.size() * 2);
-        assertThat(list.size()).isLessThan(list.size() * 2);
-        assertThat(list.size()).isLessThanOrEqualTo(list.size() * 2);
-
-        assertThat(array.length).isEqualTo(0);
-        assertThat(array.length).isZero();
-        assertThat(array.length).isNotZero();
-        assertThat(array.length).as("hi").isGreaterThan(0);
-        assertThat(array.length).isGreaterThanOrEqualTo(1);
-        assertThat(array.length).isLessThan(1);
-        assertThat(array.length).isLessThanOrEqualTo(0);
-        assertThat(array.length).isEqualTo(list.size());
-        assertThat(array.length).isEqualTo(otherArray.length);
-        assertThat(array.length).isEqualTo(1);
-        assertThat(array.length).isGreaterThan(otherArray.length - 1);
-        assertThat(array.length).isGreaterThanOrEqualTo(otherArray.length + 1);
-        assertThat(array.length).isLessThan(otherArray.length - 3);
-        assertThat(array.length).isLessThanOrEqualTo(1 - otherArray.length);
-    }
-}

src/test/resources/inspections/AssumeThat/AssumeThatAfter.java

@@ -0,0 +1,151 @@
+import org.junit.Test;
+
+import java.util.*;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assumptions.assumeThat;
+
+public class AssumeThat {
+
+    @Test
+    public void junit4_return_very_early() {
+        assumeThat(new Random().nextBoolean()).isFalse();
+        System.out.println("sweet!"); // single else statement
+        String foobar = System.getProperty("foobar");
+        assertThat(foobar).isNotEmpty();
+    }
+
+    @Test
+    public void junit4_return_in_else_branch_with_declaration_in_code_block_and_lots_of_comments() {
+        // primary comments
+        assumeThat(new Random().nextBoolean()).isTrue();
+        {
+            // Block start comment will be retained
+            String anotherString = "narf"; // This one is likely to be kept
+            assertThat(foobar).isNotEmpty();
+            assertThat(foobar).isEqualTo(anotherString);
+            // Block end comment is also going to be retained
+        } /* weird places */
+        // well, well, let's do some checks
+        String foobar = System.getProperty("foobar");
+        assertThat(foobar).isNotEmpty();
+    }
+
+    @org.junit.jupiter.api.Test
+    public void junit5_return_after_call_without_else_branch() {
+        String foobar = System.getProperty("car_manufacturer");
+        assumeThat(foobar.equals("Volkswagen")).isFalse();
+        assertThat(foobar).isNotEmpty();
+    }
+
+    @org.junit.jupiter.api.TestTemplate
+    public void junit5_return_inside_recursion_with_comments() {
+        String foobar = System.getProperty("car_manufacturer");
+        if (foobar != null) {
+            assumeThat(!foobar.equals("Volkswagen")).isTrue();
+            // I doubted this comment will be retained -- but surprise!
+            assertThat(foobar).isNotEmpty();
+            // we might keep this one alright.
+            foobar = "narf";
+            // And the final one? Again what learned.
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+        if(foobar.length() == 0)
+        {
+            return;
+        }
+        assertThat(foobar).endsWith("!!!");
+    }
+
+    @Test
+    public void junit4_return_after_assertion() {
+        String foobar = System.getProperty("car_manufacturer");
+        assertThat(foobar).isNotNull();
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    @Test
+    public void junit4_return_after_assertions_in_subroutine() {
+        String foobar = System.getProperty("car_manufacturer");
+        assertStuff(foobar);
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    @Test
+    public void junit4_return_after_assertions_in_deep_subroutine() {
+        String foobar = System.getProperty("car_manufacturer");
+        firstMethod();
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    @Test
+    public void junit4_return_after_assertions_in_deep_subroutine_with_recursion() {
+        String foobar = System.getProperty("car_manufacturer");
+        firstMethodWithPotentialRecursion();
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    @Test
+    public void junit4_no_harm_with_infinite_recursion() {
+        String foobar = System.getProperty("car_manufacturer");
+        infiniteRecursion();
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    private void assertStuff(String foobar) {
+        if (new Random().nextBoolean()) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            assertThat(foobar).isNull();
+        }
+    }
+
+    private void firstMethod() {
+        if (new Random().nextBoolean()) {
+            assertStuff("narf");
+        }
+    }
+
+    private void firstMethodWithPotentialRecursion() {
+        if (new Random().nextBoolean()) {
+            assertStuff("narf");
+        } else {
+            infiniteRecursion();
+        }
+    }
+
+    private void infiniteRecursion() {
+        secondaryRecursion();
+        secondaryRecursion();
+    }
+
+    private void secondaryRecursion() {
+        infiniteRecursion();
+        infiniteRecursion();
+    }
+}

src/test/resources/inspections/AssumeThat/AssumeThatBefore.java

@@ -0,0 +1,156 @@
+import org.junit.Test;
+
+import java.util.*;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class AssumeThat {
+
+    @Test
+    public void junit4_return_very_early() {
+        if (new Random().nextBoolean()) {
+            return;
+        } else System.out.println("sweet!"); // single else statement
+        String foobar = System.getProperty("foobar");
+        assertThat(foobar).isNotEmpty();
+    }
+
+    @Test
+    public void junit4_return_in_else_branch_with_declaration_in_code_block_and_lots_of_comments() {
+        // primary comments
+        if (new Random().nextBoolean()) /* strange place for a comment */ {
+            // Block start comment will be retained
+            String anotherString = "narf"; // This one is likely to be kept
+            assertThat(foobar).isNotEmpty();
+            assertThat(foobar).isEqualTo(anotherString);
+            // Block end comment is also going to be retained
+        } /* weird places */ else /* more weird places */ { // this one is lost
+            return; // Would be sweet to keep this comment, too.
+        } // another comment lost
+        // well, well, let's do some checks
+        String foobar = System.getProperty("foobar");
+        assertThat(foobar).isNotEmpty();
+    }
+
+    @org.junit.jupiter.api.Test
+    public void junit5_return_after_call_without_else_branch() {
+        String foobar = System.getProperty("car_manufacturer");
+        if (foobar.equals("Volkswagen")) return; // no need for Volkswagen to perform tests
+        assertThat(foobar).isNotEmpty();
+    }
+
+    @org.junit.jupiter.api.TestTemplate
+    public void junit5_return_inside_recursion_with_comments() {
+        String foobar = System.getProperty("car_manufacturer");
+        if (foobar != null) {
+            if (!foobar.equals("Volkswagen")) {
+                // I doubted this comment will be retained -- but surprise!
+                assertThat(foobar).isNotEmpty();
+                // we might keep this one alright.
+                foobar = "narf";
+                // And the final one? Again what learned.
+            } else {
+                // ooops, how did that happen?
+                return;
+            }
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+        if(foobar.length() == 0)
+        {
+            return;
+        }
+        assertThat(foobar).endsWith("!!!");
+    }
+
+    @Test
+    public void junit4_return_after_assertion() {
+        String foobar = System.getProperty("car_manufacturer");
+        assertThat(foobar).isNotNull();
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    @Test
+    public void junit4_return_after_assertions_in_subroutine() {
+        String foobar = System.getProperty("car_manufacturer");
+        assertStuff(foobar);
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    @Test
+    public void junit4_return_after_assertions_in_deep_subroutine() {
+        String foobar = System.getProperty("car_manufacturer");
+        firstMethod();
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    @Test
+    public void junit4_return_after_assertions_in_deep_subroutine_with_recursion() {
+        String foobar = System.getProperty("car_manufacturer");
+        firstMethodWithPotentialRecursion();
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    @Test
+    public void junit4_no_harm_with_infinite_recursion() {
+        String foobar = System.getProperty("car_manufacturer");
+        infiniteRecursion();
+        if (!foobar.equals("Volkswagen")) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            return;
+        }
+        assertThat(foobar).startsWith("another ecology rapist");
+    }
+
+    private void assertStuff(String foobar) {
+        if (new Random().nextBoolean()) {
+            assertThat(foobar).isNotEmpty();
+        } else {
+            assertThat(foobar).isNull();
+        }
+    }
+
+    private void firstMethod() {
+        if (new Random().nextBoolean()) {
+            assertStuff("narf");
+        }
+    }
+
+    private void firstMethodWithPotentialRecursion() {
+        if (new Random().nextBoolean()) {
+            assertStuff("narf");
+        } else {
+            infiniteRecursion();
+        }
+    }
+
+    private void infiniteRecursion() {
+        secondaryRecursion();
+        secondaryRecursion();
+    }
+
+    private void secondaryRecursion() {
+        infiniteRecursion();
+        infiniteRecursion();
+    }
+}

src/test/resources/inspections/BinaryExpression/BinaryExpressionAfter.java

@@ -10,7 +10,7 @@ public class BinaryExpression {
         String stringExp = "foo";
         String stringAct = "bar";
 
-        assertThat(primAct).isEqualTo(primExp);
+        assertThat(primAct).as("doh!").isEqualTo(primExp);
         assertThat(primAct).isEqualTo(primExp);
         assertThat(primAct).isEqualTo(primExp);
         assertThat(primAct).isEqualTo(primExp);
@@ -25,7 +25,7 @@ public class BinaryExpression {
         assertThat(primAct).isNotEqualTo(1);
         assertThat(primAct).isNotEqualTo(1);
 
-        assertThat(primAct).isNotEqualTo(primExp);
+        assertThat(primAct).as("doh!").isNotEqualTo(primExp);
         assertThat(primAct).isNotEqualTo(primExp);
         assertThat(primAct).isNotEqualTo(primExp);
         assertThat(primAct).isNotEqualTo(1);
@@ -36,7 +36,7 @@ public class BinaryExpression {
         assertThat(primAct).isEqualTo(1);
         assertThat(primAct).isEqualTo(1);
 
-        assertThat(primAct).isGreaterThan(primExp);
+        assertThat(primAct).as("doh!").isGreaterThan(primExp);
         assertThat(primAct).isGreaterThan(primExp);
         assertThat(primAct).isGreaterThan(primExp);
         assertThat(primAct).isGreaterThan(1);
@@ -47,7 +47,7 @@ public class BinaryExpression {
         assertThat(primAct).isLessThanOrEqualTo(1);
         assertThat(primAct).isLessThanOrEqualTo(1);
 
-        assertThat(primAct).isGreaterThanOrEqualTo(primExp);
+        assertThat(primAct).as("doh!").isGreaterThanOrEqualTo(primExp);
         assertThat(primAct).isGreaterThanOrEqualTo(primExp);
         assertThat(primAct).isGreaterThanOrEqualTo(primExp);
         assertThat(primAct).isGreaterThanOrEqualTo(1);
@@ -58,7 +58,7 @@ public class BinaryExpression {
         assertThat(primAct).isLessThan(1);
         assertThat(primAct).isLessThan(1);
 
-        assertThat(primAct).isLessThan(primExp);
+        assertThat(primAct).as("doh!").isLessThan(primExp);
         assertThat(primAct).isLessThan(primExp);
         assertThat(primAct).isLessThan(primExp);
         assertThat(primAct).isLessThan(1);
@@ -69,7 +69,7 @@ public class BinaryExpression {
         assertThat(primAct).isGreaterThanOrEqualTo(1);
         assertThat(primAct).isGreaterThanOrEqualTo(1);
 
-        assertThat(primAct).isLessThanOrEqualTo(primExp);
+        assertThat(primAct).as("doh!").isLessThanOrEqualTo(primExp);
         assertThat(primAct).isLessThanOrEqualTo(primExp);
         assertThat(primAct).isLessThanOrEqualTo(primExp);
         assertThat(primAct).isLessThanOrEqualTo(1);
@@ -80,7 +80,7 @@ public class BinaryExpression {
         assertThat(primAct).isGreaterThan(1);
         assertThat(primAct).isGreaterThan(1);
 
-        assertThat(numberObjAct).isEqualTo(numberObjExp);
+        assertThat(numberObjAct).as("doh!").isEqualTo(numberObjExp);
         assertThat(numberObjAct).isEqualTo(numberObjExp);
         assertThat(numberObjAct).isEqualTo(numberObjExp);
         assertThat(numberObjAct).isEqualTo(1);
@@ -91,7 +91,7 @@ public class BinaryExpression {
         assertThat(numberObjAct).isNotEqualTo(1);
         assertThat(numberObjAct).isNotEqualTo(1);
 
-        assertThat(numberObjAct).isNotEqualTo(numberObjExp);
+        assertThat(numberObjAct).as("doh!").isNotEqualTo(numberObjExp);
         assertThat(numberObjAct).isNotEqualTo(numberObjExp);
         assertThat(numberObjAct).isNotEqualTo(numberObjExp);
         assertThat(numberObjAct).isNotEqualTo(1);
@@ -102,7 +102,7 @@ public class BinaryExpression {
         assertThat(numberObjAct).isEqualTo(1);
         assertThat(numberObjAct).isEqualTo(1);
 
-        assertThat(numberObjAct).isGreaterThan(numberObjExp);
+        assertThat(numberObjAct).as("doh!").isGreaterThan(numberObjExp);
         assertThat(numberObjAct).isGreaterThan(numberObjExp);
         assertThat(numberObjAct).isGreaterThan(numberObjExp);
         assertThat(numberObjAct).isGreaterThan(1);
@@ -113,7 +113,7 @@ public class BinaryExpression {
         assertThat(numberObjAct).isLessThanOrEqualTo(1);
         assertThat(numberObjAct).isLessThanOrEqualTo(1);
 
-        assertThat(numberObjAct).isGreaterThanOrEqualTo(numberObjExp);
+        assertThat(numberObjAct).as("doh!").isGreaterThanOrEqualTo(numberObjExp);
         assertThat(numberObjAct).isGreaterThanOrEqualTo(numberObjExp);
         assertThat(numberObjAct).isGreaterThanOrEqualTo(numberObjExp);
         assertThat(numberObjAct).isGreaterThanOrEqualTo(1);
@@ -124,7 +124,7 @@ public class BinaryExpression {
         assertThat(numberObjAct).isLessThan(1);
         assertThat(numberObjAct).isLessThan(1);
 
-        assertThat(numberObjAct).isLessThan(numberObjExp);
+        assertThat(numberObjAct).as("doh!").isLessThan(numberObjExp);
         assertThat(numberObjAct).isLessThan(numberObjExp);
         assertThat(numberObjAct).isLessThan(numberObjExp);
         assertThat(numberObjAct).isLessThan(1);
@@ -135,7 +135,7 @@ public class BinaryExpression {
         assertThat(numberObjAct).isGreaterThanOrEqualTo(1);
         assertThat(numberObjAct).isGreaterThanOrEqualTo(1);
 
-        assertThat(numberObjAct).isLessThanOrEqualTo(numberObjExp);
+        assertThat(numberObjAct).as("doh!").isLessThanOrEqualTo(numberObjExp);
         assertThat(numberObjAct).isLessThanOrEqualTo(numberObjExp);
         assertThat(numberObjAct).isLessThanOrEqualTo(numberObjExp);
         assertThat(numberObjAct).isLessThanOrEqualTo(1);
@@ -146,42 +146,42 @@ public class BinaryExpression {
         assertThat(numberObjAct).isGreaterThan(1);
         assertThat(numberObjAct).isGreaterThan(1);
 
-        assertThat(numberObjAct).isEqualTo(numberObjExp);
+        assertThat(numberObjAct).as("doh!").isEqualTo(numberObjExp);
         assertThat(numberObjAct).isEqualTo(numberObjExp);
         assertThat(numberObjAct).isEqualTo(numberObjExp);
         assertThat(numberObjAct).isNotEqualTo(numberObjExp);
         assertThat(numberObjAct).isNotEqualTo(numberObjExp);
         assertThat(numberObjAct).isNotEqualTo(numberObjExp);
 
-        assertThat(stringAct).isSameAs(stringExp);
+        assertThat(stringAct).as("doh!").isSameAs(stringExp);
         assertThat(stringAct).isSameAs(stringExp);
         assertThat(stringAct).isSameAs(stringExp);
         assertThat(stringAct).isNotSameAs(stringExp);
         assertThat(stringAct).isNotSameAs(stringExp);
         assertThat(stringAct).isNotSameAs(stringExp);
 
-        assertThat(stringAct).isEqualTo(stringExp);
+        assertThat(stringAct).as("doh!").isEqualTo(stringExp);
         assertThat(stringAct).isEqualTo(stringExp);
         assertThat(stringAct).isEqualTo(stringExp);
         assertThat(stringAct).isNotEqualTo(stringExp);
         assertThat(stringAct).isNotEqualTo(stringExp);
         assertThat(stringAct).isNotEqualTo(stringExp);
 
-        assertThat(stringAct).isNotSameAs(stringExp);
+        assertThat(stringAct).as("doh!").isNotSameAs(stringExp);
         assertThat(stringAct).isNotSameAs(stringExp);
         assertThat(stringAct).isNotSameAs(stringExp);
         assertThat(stringAct).isSameAs(stringExp);
         assertThat(stringAct).isSameAs(stringExp);
         assertThat(stringAct).isSameAs(stringExp);
 
-        assertThat(stringAct).isNull();
+        assertThat(stringAct).as("doh!").isNull();
         assertThat(stringAct).isNull();
         assertThat(stringAct).isNull();
         assertThat(stringAct).isNotNull();
         assertThat(stringAct).isNotNull();
         assertThat(stringAct).isNotNull();
 
-        assertThat(stringAct).isNull();
+        assertThat(stringAct).as("doh!").isNull();
         assertThat(stringAct).isNull();
         assertThat(stringAct).isNull();
         assertThat(stringAct).isNotNull();
@@ -190,5 +190,10 @@ public class BinaryExpression {
 
         assertThat(null == null).isTrue();
         assertThat(!false).isTrue();
+
+        assertThat(primAct).as("doh!").isEqualTo(primExp).isEqualTo(primExp);
+        assertThat(primAct == primExp).isFalse().as("doh!").isEqualTo(true);
+
+        assertThat(numberObjAct).as("doh!").isEqualTo(numberObjExp).isEqualTo(numberObjExp);
     }
 }

src/test/resources/inspections/BinaryExpression/BinaryExpressionBefore.java

@@ -10,7 +10,7 @@ public class BinaryExpression {
         String stringExp = "foo";
         String stringAct = "bar";
 
-        assertThat(primAct == primExp).isTrue();
+        assertThat(primAct == primExp).as("doh!").isTrue();
         assertThat(primAct == primExp).isEqualTo(true);
         assertThat(primAct == primExp).isEqualTo(Boolean.TRUE);
         assertThat(primAct == primExp).isNotEqualTo(false);
@@ -25,7 +25,7 @@ public class BinaryExpression {
         assertThat(primAct == 1).isFalse();
         assertThat(1 == primAct).isFalse();
 
-        assertThat(primAct != primExp).isTrue();
+        assertThat(primAct != primExp).as("doh!").isTrue();
         assertThat(primAct != primExp).isEqualTo(true);
         assertThat(primAct != primExp).isNotEqualTo(false);
         assertThat(primAct != 1).isTrue();
@@ -36,7 +36,7 @@ public class BinaryExpression {
         assertThat(primAct != 1).isFalse();
         assertThat(1 != primAct).isFalse();
 
-        assertThat(primAct > primExp).isTrue();
+        assertThat(primAct > primExp).as("doh!").isTrue();
         assertThat(primAct > primExp).isEqualTo(true);
         assertThat(primAct > primExp).isNotEqualTo(false);
         assertThat(primAct > 1).isTrue();
@@ -47,7 +47,7 @@ public class BinaryExpression {
         assertThat(primAct > 1).isFalse();
         assertThat(1 < primAct).isFalse();
 
-        assertThat(primAct >= primExp).isTrue();
+        assertThat(primAct >= primExp).as("doh!").isTrue();
         assertThat(primAct >= primExp).isEqualTo(true);
         assertThat(primAct >= primExp).isNotEqualTo(false);
         assertThat(primAct >= 1).isTrue();
@@ -58,7 +58,7 @@ public class BinaryExpression {
         assertThat(primAct >= 1).isFalse();
         assertThat(1 <= primAct).isFalse();
 
-        assertThat(primAct < primExp).isTrue();
+        assertThat(primAct < primExp).as("doh!").isTrue();
         assertThat(primAct < primExp).isEqualTo(true);
         assertThat(primAct < primExp).isNotEqualTo(false);
         assertThat(primAct < 1).isTrue();
@@ -69,7 +69,7 @@ public class BinaryExpression {
         assertThat(primAct < 1).isFalse();
         assertThat(1 > primAct).isFalse();
 
-        assertThat(primAct <= primExp).isTrue();
+        assertThat(primAct <= primExp).as("doh!").isTrue();
         assertThat(primAct <= primExp).isEqualTo(true);
         assertThat(primAct <= primExp).isNotEqualTo(false);
         assertThat(primAct <= 1).isTrue();
@@ -80,7 +80,7 @@ public class BinaryExpression {
         assertThat(primAct <= 1).isFalse();
         assertThat(1 >= primAct).isFalse();
 
-        assertThat(numberObjAct == numberObjExp).isTrue();
+        assertThat(numberObjAct == numberObjExp).as("doh!").isTrue();
         assertThat(numberObjAct == numberObjExp).isEqualTo(true);
         assertThat(numberObjAct == numberObjExp).isNotEqualTo(false);
         assertThat(numberObjAct == 1).isTrue();
@@ -91,7 +91,7 @@ public class BinaryExpression {
         assertThat(numberObjAct == 1).isFalse();
         assertThat(1 == numberObjAct).isFalse();
 
-        assertThat(numberObjAct != numberObjExp).isTrue();
+        assertThat(numberObjAct != numberObjExp).as("doh!").isTrue();
         assertThat(numberObjAct != numberObjExp).isEqualTo(true);
         assertThat(numberObjAct != numberObjExp).isNotEqualTo(false);
         assertThat(numberObjAct != 1).isTrue();
@@ -102,7 +102,7 @@ public class BinaryExpression {
         assertThat(numberObjAct != 1).isFalse();
         assertThat(1 != numberObjAct).isFalse();
 
-        assertThat(numberObjAct > numberObjExp).isTrue();
+        assertThat(numberObjAct > numberObjExp).as("doh!").isTrue();
         assertThat(numberObjAct > numberObjExp).isEqualTo(true);
         assertThat(numberObjAct > numberObjExp).isNotEqualTo(false);
         assertThat(numberObjAct > 1).isTrue();
@@ -113,7 +113,7 @@ public class BinaryExpression {
         assertThat(numberObjAct > 1).isFalse();
         assertThat(1 < numberObjAct).isFalse();
 
-        assertThat(numberObjAct >= numberObjExp).isTrue();
+        assertThat(numberObjAct >= numberObjExp).as("doh!").isTrue();
         assertThat(numberObjAct >= numberObjExp).isEqualTo(true);
         assertThat(numberObjAct >= numberObjExp).isNotEqualTo(false);
         assertThat(numberObjAct >= 1).isTrue();
@@ -124,7 +124,7 @@ public class BinaryExpression {
         assertThat(numberObjAct >= 1).isFalse();
         assertThat(1 <= numberObjAct).isFalse();
 
-        assertThat(numberObjAct < numberObjExp).isTrue();
+        assertThat(numberObjAct < numberObjExp).as("doh!").isTrue();
         assertThat(numberObjAct < numberObjExp).isEqualTo(true);
         assertThat(numberObjAct < numberObjExp).isNotEqualTo(false);
         assertThat(numberObjAct < 1).isTrue();
@@ -135,7 +135,7 @@ public class BinaryExpression {
         assertThat(numberObjAct < 1).isFalse();
         assertThat(1 > numberObjAct).isFalse();
 
-        assertThat(numberObjAct <= numberObjExp).isTrue();
+        assertThat(numberObjAct <= numberObjExp).as("doh!").isTrue();
         assertThat(numberObjAct <= numberObjExp).isEqualTo(true);
         assertThat(numberObjAct <= numberObjExp).isNotEqualTo(false);
         assertThat(numberObjAct <= 1).isTrue();
@@ -146,42 +146,42 @@ public class BinaryExpression {
         assertThat(numberObjAct <= 1).isFalse();
         assertThat(1 >= numberObjAct).isFalse();
 
-        assertThat(numberObjAct.equals(numberObjExp)).isTrue();
+        assertThat(numberObjAct.equals(numberObjExp)).as("doh!").isTrue();
         assertThat(numberObjAct.equals(numberObjExp)).isEqualTo(true);
         assertThat(numberObjAct.equals(numberObjExp)).isNotEqualTo(false);
         assertThat(numberObjAct.equals(numberObjExp)).isFalse();
         assertThat(numberObjAct.equals(numberObjExp)).isEqualTo(false);
         assertThat(numberObjAct.equals(numberObjExp)).isNotEqualTo(true);
 
-        assertThat(stringAct == stringExp).isTrue();
+        assertThat(stringAct == stringExp).as("doh!").isTrue();
         assertThat(stringAct == stringExp).isEqualTo(true);
         assertThat(stringAct == stringExp).isNotEqualTo(false);
         assertThat(stringAct == stringExp).isFalse();
         assertThat(stringAct == stringExp).isEqualTo(false);
         assertThat(stringAct == stringExp).isNotEqualTo(true);
 
-        assertThat(stringAct.equals(stringExp)).isTrue();
+        assertThat(stringAct.equals(stringExp)).as("doh!").isTrue();
         assertThat(stringAct.equals(stringExp)).isEqualTo(true);
         assertThat(stringAct.equals(stringExp)).isNotEqualTo(false);
         assertThat(stringAct.equals(stringExp)).isFalse();
         assertThat(stringAct.equals(stringExp)).isEqualTo(false);
         assertThat(stringAct.equals(stringExp)).isNotEqualTo(true);
 
-        assertThat(stringAct != stringExp).isTrue();
+        assertThat(stringAct != stringExp).as("doh!").isTrue();
         assertThat(stringAct != stringExp).isEqualTo(true);
         assertThat(stringAct != stringExp).isNotEqualTo(false);
         assertThat(stringAct != stringExp).isFalse();
         assertThat(stringAct != stringExp).isEqualTo(false);
         assertThat(stringAct != stringExp).isNotEqualTo(true);
 
-        assertThat(stringAct == null).isTrue();
+        assertThat(stringAct == null).as("doh!").isTrue();
         assertThat(stringAct == null).isEqualTo(true);
         assertThat(stringAct == null).isNotEqualTo(false);
         assertThat(stringAct == null).isFalse();
         assertThat(stringAct == null).isEqualTo(false);
         assertThat(stringAct == null).isNotEqualTo(true);
 
-        assertThat(null == stringAct).isTrue();
+        assertThat(null == stringAct).as("doh!").isTrue();
         assertThat(null == stringAct).isEqualTo(true);
         assertThat(null == stringAct).isNotEqualTo(false);
         assertThat(null == stringAct).isFalse();
@@ -190,5 +190,10 @@ public class BinaryExpression {
 
         assertThat(null == null).isTrue();
         assertThat(!false).isTrue();
+
+        assertThat(primAct == primExp).as("doh!").isTrue().isEqualTo(true);
+        assertThat(primAct == primExp).isFalse().as("doh!").isEqualTo(true);
+
+        assertThat(numberObjAct.equals(numberObjExp)).as("doh!").isTrue().isEqualTo(true);
     }
 }

src/test/resources/inspections/BooleanCondition/BooleanConditionAfter.java

@@ -1,12 +1,12 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
-public class BooleanIsTrueOrFalse {
+public class BooleanCondition {
 
-    private void booleanIsTrueOrFalse() {
+    private void booleanCondition() {
         boolean primitive = false;
         Boolean object = Boolean.TRUE;
 
-        assertThat(primitive).isTrue();
+        assertThat(primitive).as("foo").isTrue();
         assertThat(primitive).isFalse();
         assertThat(object).isTrue();
         assertThat(object).isFalse();
@@ -15,7 +15,7 @@ public class BooleanIsTrueOrFalse {
         assertThat(object).isTrue();
         assertThat(object).isFalse();
 
-        assertThat(primitive).isFalse();
+        assertThat(primitive).as("foo").isFalse();
         assertThat(primitive).isTrue();
         assertThat(object).isFalse();
         assertThat(object).isTrue();
@@ -28,5 +28,7 @@ public class BooleanIsTrueOrFalse {
         assertThat(object).isEqualTo(Boolean.TRUE && !Boolean.TRUE);
 
         assertThat("").isEqualTo(Boolean.TRUE);
+
+        assertThat(primitive).isTrue().as("foo").isTrue().as("bar").isTrue().isFalse();
     }
 }

src/test/resources/inspections/BooleanCondition/BooleanConditionBefore.java

@@ -1,12 +1,12 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
-public class BooleanIsTrueOrFalse {
+public class BooleanCondition {
 
-    private void booleanIsTrueOrFalse() {
+    private void booleanCondition() {
         boolean primitive = false;
         Boolean object = Boolean.TRUE;
 
-        assertThat(primitive).isEqualTo(Boolean.TRUE);
+        assertThat(primitive).as("foo").isEqualTo(Boolean.TRUE);
         assertThat(primitive).isEqualTo(Boolean.FALSE);
         assertThat(object).isEqualTo(Boolean.TRUE);
         assertThat(object).isEqualTo(Boolean.FALSE);
@@ -15,7 +15,7 @@ public class BooleanIsTrueOrFalse {
         assertThat(object).isEqualTo(true);
         assertThat(object).isEqualTo(false);
 
-        assertThat(primitive).isNotEqualTo(Boolean.TRUE);
+        assertThat(primitive).as("foo").isNotEqualTo(Boolean.TRUE);
         assertThat(primitive).isNotEqualTo(Boolean.FALSE);
         assertThat(object).isNotEqualTo(Boolean.TRUE);
         assertThat(object).isNotEqualTo(Boolean.FALSE);
@@ -28,5 +28,7 @@ public class BooleanIsTrueOrFalse {
         assertThat(object).isEqualTo(Boolean.TRUE && !Boolean.TRUE);
 
         assertThat("").isEqualTo(Boolean.TRUE);
+
+        assertThat(primitive).isEqualTo(Boolean.TRUE).as("foo").isEqualTo(true).as("bar").isTrue().isFalse();
     }
 }

src/test/resources/inspections/EnumerableIsEmpty/EnumerableIsEmptyAfter.java

@@ -14,5 +14,7 @@ public class EnumerableIsEmpty {
         assertThat(new StringBuilder()).as("bar").hasSize(1);
         assertThat(new ArrayList<Long>()).as("etc").hasSize(1);
         assertThat(new Long[1]).as("etc").hasSize(1);
+
+        assertThat("string").as("foo").hasSize(0).hasSameSizeAs("foo").isEmpty();
     }
 }

src/test/resources/inspections/EnumerableIsEmpty/EnumerableIsEmptyBefore.java

@@ -14,5 +14,7 @@ public class EnumerableIsEmpty {
         assertThat(new StringBuilder()).as("bar").hasSize(1);
         assertThat(new ArrayList<Long>()).as("etc").hasSize(1);
         assertThat(new Long[1]).as("etc").hasSize(1);
+
+        assertThat("string").as("foo").hasSize(0).hasSameSizeAs("foo").hasSize(0);
     }
 }

src/test/resources/inspections/GuavaOptional/GuavaOptionalAfter.java

@@ -3,29 +3,29 @@ import com.google.common.base.Optional;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.guava.api.Assertions.assertThat;
 
-public class AssertThatGuavaOptional {
+public class GuavaOptional {
 
-    private void assertThatGuavaOptional() {
+    private void guavaOptional() {
         Optional<String> opt = Optional.absent();
 
-        assertThat(opt).isPresent();
+        assertThat(opt).as("foo").isPresent();
         assertThat(opt).isPresent();
         assertThat(opt).isPresent();
         assertThat(opt).isPresent();
         assertThat(opt).isPresent();
 
-        assertThat(opt).isAbsent();
+        assertThat(opt).as("foo").isAbsent();
         assertThat(opt).isAbsent();
         assertThat(opt).isAbsent();
         assertThat(opt).isAbsent();
         assertThat(opt).isAbsent();
 
-        assertThat(opt).contains("foo");
+        assertThat(opt).as("foo").contains("foo");
         assertThat(opt.get()).isSameAs("foo");
         assertThat(opt.get()).isNotEqualTo("foo");
         assertThat(opt.get()).isNotSameAs("foo");
 
-        assertThat(opt).contains("foo");
+        assertThat(opt).as("foo").contains("foo");
         assertThat(opt).contains("foo");
         assertThat(opt).isNotEqualTo(Optional.of("foo"));
         assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));
@@ -33,20 +33,23 @@ public class AssertThatGuavaOptional {
         assertThat(opt).isAbsent();
         assertThat(opt).isPresent();
 
-        org.assertj.guava.api.Assertions.assertThat(opt).contains("foo");
-        org.assertj.guava.api.Assertions.assertThat(opt).contains("foo");
+        assertThat(opt).as("foo").contains("foo");
+        assertThat(opt).contains("foo");
         org.assertj.guava.api.Assertions.assertThat(opt).isNotEqualTo(Optional.of("foo"));
         org.assertj.guava.api.Assertions.assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));
 
-        org.assertj.guava.api.Assertions.assertThat(opt).isAbsent();
-        org.assertj.guava.api.Assertions.assertThat(opt).isPresent();
+        assertThat(opt).as("foo").isAbsent();
+        assertThat(opt).isPresent();
 
-        assertThat(opt).contains("foo");
+        assertThat(opt).as("foo").contains("foo");
         assertThat(opt).contains("foo");
         org.assertj.core.api.Assertions.assertThat(opt).isNotEqualTo(Optional.of("foo"));
         org.assertj.core.api.Assertions.assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));
 
-        assertThat(opt).isAbsent();
+        assertThat(opt).as("foo").isAbsent();
         assertThat(opt).isPresent();
+
+        assertThat(opt).as("foo").isPresent().as("bar").isPresent();
+        assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isEqualTo(Boolean.FALSE);
     }
 }

src/test/resources/inspections/GuavaOptional/GuavaOptionalBefore.java

@@ -3,29 +3,29 @@ import com.google.common.base.Optional;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.guava.api.Assertions.assertThat;
 
-public class AssertThatGuavaOptional {
+public class GuavaOptional {
 
-    private void assertThatGuavaOptional() {
+    private void guavaOptional() {
         Optional<String> opt = Optional.absent();
 
-        assertThat(opt.isPresent()).isEqualTo(true);
+        assertThat(opt.isPresent()).as("foo").isEqualTo(true);
         assertThat(opt.isPresent()).isEqualTo(Boolean.TRUE);
         assertThat(opt.isPresent()).isNotEqualTo(false);
         assertThat(opt.isPresent()).isNotEqualTo(Boolean.FALSE);
         assertThat(opt.isPresent()).isTrue();
 
-        assertThat(opt.isPresent()).isEqualTo(false);
+        assertThat(opt.isPresent()).as("foo").isEqualTo(false);
         assertThat(opt.isPresent()).isEqualTo(Boolean.FALSE);
         assertThat(opt.isPresent()).isNotEqualTo(true);
         assertThat(opt.isPresent()).isNotEqualTo(Boolean.TRUE);
         assertThat(opt.isPresent()).isFalse();
 
-        assertThat(opt.get()).isEqualTo("foo");
+        assertThat(opt.get()).as("foo").isEqualTo("foo");
         assertThat(opt.get()).isSameAs("foo");
         assertThat(opt.get()).isNotEqualTo("foo");
         assertThat(opt.get()).isNotSameAs("foo");
 
-        assertThat(opt).isEqualTo(Optional.of("foo"));
+        assertThat(opt).as("foo").isEqualTo(Optional.of("foo"));
         assertThat(opt).isEqualTo(Optional.fromNullable("foo"));
         assertThat(opt).isNotEqualTo(Optional.of("foo"));
         assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));
@@ -33,20 +33,23 @@ public class AssertThatGuavaOptional {
         assertThat(opt).isEqualTo(Optional.absent());
         assertThat(opt).isNotEqualTo(Optional.absent());
 
-        org.assertj.guava.api.Assertions.assertThat(opt).isEqualTo(Optional.of("foo"));
+        org.assertj.guava.api.Assertions.assertThat(opt).as("foo").isEqualTo(Optional.of("foo"));
         org.assertj.guava.api.Assertions.assertThat(opt).isEqualTo(Optional.fromNullable("foo"));
         org.assertj.guava.api.Assertions.assertThat(opt).isNotEqualTo(Optional.of("foo"));
         org.assertj.guava.api.Assertions.assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));
 
-        org.assertj.guava.api.Assertions.assertThat(opt).isEqualTo(Optional.absent());
+        org.assertj.guava.api.Assertions.assertThat(opt).as("foo").isEqualTo(Optional.absent());
         org.assertj.guava.api.Assertions.assertThat(opt).isNotEqualTo(Optional.absent());
 
-        org.assertj.core.api.Assertions.assertThat(opt).isEqualTo(Optional.of("foo"));
+        org.assertj.core.api.Assertions.assertThat(opt).as("foo").isEqualTo(Optional.of("foo"));
         org.assertj.core.api.Assertions.assertThat(opt).isEqualTo(Optional.fromNullable("foo"));
         org.assertj.core.api.Assertions.assertThat(opt).isNotEqualTo(Optional.of("foo"));
         org.assertj.core.api.Assertions.assertThat(opt).isNotEqualTo(Optional.fromNullable("foo"));
 
-        org.assertj.core.api.Assertions.assertThat(opt).isEqualTo(Optional.absent());
+        org.assertj.core.api.Assertions.assertThat(opt).as("foo").isEqualTo(Optional.absent());
         org.assertj.core.api.Assertions.assertThat(opt).isNotEqualTo(Optional.absent());
+
+        assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isEqualTo(Boolean.TRUE);
+        assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isEqualTo(Boolean.FALSE);
     }
 }

src/test/resources/inspections/GuavaOptional/WithoutPriorGuavaImportAfter.java

@@ -3,9 +3,9 @@ import com.google.common.base.Optional;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.guava.api.Assertions.assertThat;
 
-public class AssertThatGuavaOptional {
+public class GuavaOptional {
 
-    private void assertThatGuavaOptional() {
+    private void guavaOptional() {
         Optional<String> opt = Optional.absent();
 
         assertThat(opt).contains("foo");

src/test/resources/inspections/GuavaOptional/WithoutPriorGuavaImportBefore.java

@@ -2,9 +2,9 @@ import com.google.common.base.Optional;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-public class AssertThatGuavaOptional {
+public class GuavaOptional {
 
-    private void assertThatGuavaOptional() {
+    private void guavaOptional() {
         Optional<String> opt = Optional.absent();
 
         assertThat(opt).isEqualTo(Optional.of("foo"));

src/test/resources/inspections/InstanceOf/InstanceOfAfter.java

@@ -0,0 +1,25 @@
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class InstanceOf {
+
+    private void instanceOf() {
+        Boolean object = Boolean.TRUE;
+
+        assertThat(object).as("foo").isInstanceOf(Boolean.class);
+        assertThat(object).isInstanceOf(Boolean.class);
+        assertThat(object).isInstanceOf(Boolean.class);
+        assertThat(object).isInstanceOf(Boolean.class);
+        assertThat(object).isInstanceOf(Boolean.class);
+
+        assertThat(object).as("foo").isNotInstanceOf(Boolean.class);
+        assertThat(object).isNotInstanceOf(Boolean.class);
+        assertThat(object).isNotInstanceOf(Boolean.class);
+        assertThat(object).isNotInstanceOf(Boolean.class);
+        assertThat(object).isNotInstanceOf(Boolean.class);
+
+        assertThat(object).as("nah").isNotInstanceOf(Boolean.class);
+
+        assertThat(object).as("foo").isInstanceOf(Boolean.class).as("bar").isInstanceOf(Boolean.class);
+        assertThat(object instanceof Boolean).as("foo").isEqualTo(Boolean.TRUE).as("bar").isEqualTo(false);
+    }
+}

src/test/resources/inspections/InstanceOf/InstanceOfBefore.java

@@ -0,0 +1,25 @@
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class InstanceOf {
+
+    private void instanceOf() {
+        Boolean object = Boolean.TRUE;
+
+        assertThat(object instanceof Boolean).as("foo").isEqualTo(Boolean.TRUE);
+        assertThat(object instanceof Boolean).isEqualTo(true);
+        assertThat(object instanceof Boolean).isNotEqualTo(Boolean.FALSE);
+        assertThat(object instanceof Boolean).isNotEqualTo(false);
+        assertThat(object instanceof Boolean).isTrue();
+
+        assertThat(object instanceof Boolean).as("foo").isEqualTo(Boolean.FALSE);
+        assertThat(object instanceof Boolean).isEqualTo(false);
+        assertThat(object instanceof Boolean).isNotEqualTo(Boolean.TRUE);
+        assertThat(object instanceof Boolean).isNotEqualTo(true);
+        assertThat(object instanceof Boolean).isFalse();
+
+        assertThat(((object)) instanceof Boolean).as("nah").isEqualTo(true && !true);
+
+        assertThat(object instanceof Boolean).as("foo").isEqualTo(Boolean.TRUE).as("bar").isEqualTo(true);
+        assertThat(object instanceof Boolean).as("foo").isEqualTo(Boolean.TRUE).as("bar").isEqualTo(false);
+    }
+}

src/test/resources/inspections/InvertedBooleanCondition/InvertedBooleanConditionAfter.java

@@ -0,0 +1,39 @@
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class InvertedBooleanCondition {
+
+    private void invertedBooleanCondition() {
+        boolean primitive = false;
+        Boolean object = Boolean.TRUE;
+
+        assertThat(primitive).as("foo").isFalse();
+        assertThat(primitive).isFalse();
+        assertThat(primitive).isFalse();
+        assertThat(primitive).isFalse();
+        assertThat(primitive).isFalse();
+
+        assertThat(object).as("foo").isFalse();
+        assertThat(object).isFalse();
+        assertThat(object).isFalse();
+        assertThat(object).isFalse();
+        assertThat(object).isFalse();
+
+        assertThat(primitive).as("foo").isTrue();
+        assertThat(primitive).isTrue();
+        assertThat(primitive).isTrue();
+        assertThat(primitive).isTrue();
+        assertThat(primitive).isTrue();
+
+        assertThat(object).as("foo").isTrue();
+        assertThat(object).isTrue();
+        assertThat(object).isTrue();
+        assertThat(object).isTrue();
+        assertThat(object).isTrue();
+
+        assertThat(!((primitive))).as("nah").isTrue();
+        assertThat(!object).isEqualTo(Boolean.TRUE && !Boolean.TRUE);
+
+        assertThat(primitive).as("foo").isFalse().as("bar").isFalse();
+        assertThat(primitive).as("foo").isFalse().as("bar").isTrue();
+    }
+}

src/test/resources/inspections/InvertedBooleanCondition/InvertedBooleanConditionBefore.java

@@ -0,0 +1,39 @@
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class InvertedBooleanCondition {
+
+    private void invertedBooleanCondition() {
+        boolean primitive = false;
+        Boolean object = Boolean.TRUE;
+
+        assertThat(!primitive).as("foo").isEqualTo(Boolean.TRUE);
+        assertThat(!primitive).isEqualTo(true);
+        assertThat(!primitive).isNotEqualTo(Boolean.FALSE);
+        assertThat(!primitive).isNotEqualTo(false);
+        assertThat(!primitive).isTrue();
+
+        assertThat(!object).as("foo").isEqualTo(Boolean.TRUE);
+        assertThat(!object).isEqualTo(true);
+        assertThat(!object).isNotEqualTo(Boolean.FALSE);
+        assertThat(!object).isNotEqualTo(false);
+        assertThat(!object).isTrue();
+
+        assertThat(!primitive).as("foo").isEqualTo(Boolean.FALSE);
+        assertThat(!primitive).isEqualTo(false);
+        assertThat(!primitive).isNotEqualTo(Boolean.TRUE);
+        assertThat(!primitive).isNotEqualTo(true);
+        assertThat(!primitive).isFalse();
+
+        assertThat(!object).as("foo").isEqualTo(Boolean.FALSE);
+        assertThat(!object).isEqualTo(false);
+        assertThat(!object).isNotEqualTo(Boolean.TRUE);
+        assertThat(!object).isNotEqualTo(true);
+        assertThat(!object).isFalse();
+
+        assertThat(!(((!((primitive)))))).as("nah").isEqualTo(true && !true);
+        assertThat(!object).isEqualTo(Boolean.TRUE && !Boolean.TRUE);
+
+        assertThat(!primitive).as("foo").isEqualTo(Boolean.TRUE).as("bar").isNotEqualTo(false);
+        assertThat(!primitive).as("foo").isEqualTo(Boolean.TRUE).as("bar").isNotEqualTo(true);
+    }
+}

src/test/resources/inspections/Java8Optional/Java8OptionalAfter.java

@@ -2,12 +2,12 @@ import java.util.Optional;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-public class AssertThatJava8Optional {
+public class Java8Optional {
 
-    private void assertThatJava8Optional() {
+    private void java8Optional() {
         Optional<String> opt = Optional.empty();
 
-        assertThat(opt).isPresent();
+        assertThat(opt).as("foo").isPresent();
         assertThat(opt).isPresent();
         assertThat(opt).isPresent();
         assertThat(opt).isPresent();
@@ -19,17 +19,22 @@ public class AssertThatJava8Optional {
         assertThat(opt).isNotPresent();
         assertThat(opt).isNotPresent();
 
-        assertThat(opt).contains("foo");
+        assertThat(opt).as("foo").contains("foo");
         assertThat(opt).containsSame("foo");
         assertThat(opt.get()).isNotEqualTo("foo");
         assertThat(opt.get()).isNotSameAs("foo");
 
-        assertThat(opt).contains("foo");
+        assertThat(opt).as("foo").contains("foo");
         assertThat(opt).contains("foo");
         assertThat(opt).isNotEqualTo(Optional.of("foo"));
         assertThat(opt).isNotEqualTo(Optional.ofNullable("foo"));
 
-        assertThat(opt).isNotPresent();
+        assertThat(opt).as("foo").isNotPresent();
         assertThat(opt).isPresent();
+
+        assertThat(opt).as("foo").isPresent().as("bar").isPresent();
+        assertThat(opt.isPresent()).as("foo").isEqualTo(false).as("bar").isTrue();
+
+        assertThat(opt.get()).isEqualTo("foo").isSameAs("foo").isNotEqualTo("foo").isNotSameAs("foo");
     }
 }

src/test/resources/inspections/Java8Optional/Java8OptionalBefore.java

@@ -2,12 +2,12 @@ import java.util.Optional;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
-public class AssertThatJava8Optional {
+public class Java8Optional {
 
-    private void assertThatJava8Optional() {
+    private void java8Optional() {
         Optional<String> opt = Optional.empty();
 
-        assertThat(opt.isPresent()).isEqualTo(true);
+        assertThat(opt.isPresent()).as("foo").isEqualTo(true);
         assertThat(opt.isPresent()).isEqualTo(Boolean.TRUE);
         assertThat(opt.isPresent()).isNotEqualTo(false);
         assertThat(opt.isPresent()).isNotEqualTo(Boolean.FALSE);
@@ -19,17 +19,22 @@ public class AssertThatJava8Optional {
         assertThat(opt.isPresent()).isNotEqualTo(Boolean.TRUE);
         assertThat(opt.isPresent()).isFalse();
 
-        assertThat(opt.get()).isEqualTo("foo");
+        assertThat(opt.get()).as("foo").isEqualTo("foo");
         assertThat(opt.get()).isSameAs("foo");
         assertThat(opt.get()).isNotEqualTo("foo");
         assertThat(opt.get()).isNotSameAs("foo");
 
-        assertThat(opt).isEqualTo(Optional.of("foo"));
+        assertThat(opt).as("foo").isEqualTo(Optional.of("foo"));
         assertThat(opt).isEqualTo(Optional.ofNullable("foo"));
         assertThat(opt).isNotEqualTo(Optional.of("foo"));
         assertThat(opt).isNotEqualTo(Optional.ofNullable("foo"));
 
-        assertThat(opt).isEqualTo(Optional.empty());
+        assertThat(opt).as("foo").isEqualTo(Optional.empty());
         assertThat(opt).isNotEqualTo(Optional.empty());
+
+        assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isTrue();
+        assertThat(opt.isPresent()).as("foo").isEqualTo(false).as("bar").isTrue();
+
+        assertThat(opt.get()).isEqualTo("foo").isSameAs("foo").isNotEqualTo("foo").isNotSameAs("foo");
     }
 }

src/test/resources/inspections/JoinStatements/JoinStatementsAfter.java

@@ -0,0 +1,52 @@
+import java.util.*;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class JoinStatements {
+
+    private void joinStatements() {
+        List<String> list = new ArrayList<>();
+        List<String> otherList = new ArrayList<>();
+
+        // the future is always born in pain
+        /* tricky */
+        assertThat(list).as("foo").hasSize(2)
+                /* do another */
+                /* do one */.as("bar").contains("barbar")
+                // comment to keep
+                .doesNotContain("barbara") // another comment to keep
+                .doesNotContain("wrzlbrmpft")
+                /* and a multi line comment
+                    after the statement */
+                // across two lines
+                .as("etc")/* what a nasty comment */.contains("etcetc")
+                // moar!
+                .doesNotContain("foobar");
+
+        assertThat("narf").isNotEqualTo("puit");
+        assertThat(list).as("bar").contains("barbar").as("foo").hasSize(2);
+        assertThat(list).as("evil").extracting(String::length).contains(2);
+
+        assertThat(list).as("bar").contains("barbar");
+        assertThat(otherList).contains("puit");
+        assertThat(list).as("foo").hasSize(2);
+        if (true) {
+            assertThat(list).doesNotContain("narf").as("bar").contains("barbar");
+        }
+        assertThat(list.get(0)).isNotEmpty().hasSize(3).isEqualTo("bar");
+
+        assertThat(otherList.get(0)).isNotEmpty();
+        assertThat(list.get(0)).hasSize(3);
+
+        assertThat(list.get(0) + "foo").isEqualTo("bar").doesNotStartWith("foo");
+
+        assertThat(otherList.get(0) + "foo").isEqualTo("bar");
+        assertThat(list.get(0) + "foo").doesNotStartWith("foo");
+
+        Iterator<String> iterator = list.iterator();
+        assertThat(iterator.next()).isEqualTo("foo");
+        assertThat(iterator.next()).isEqualTo("bar");
+        assertThat(iterator.next().toLowerCase()).isEqualTo("foo");
+        assertThat(iterator.next().toLowerCase()).isEqualTo("bar");
+    }
+}

src/test/resources/inspections/JoinStatements/JoinStatementsBefore.java

@@ -0,0 +1,54 @@
+import java.util.*;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class JoinStatements {
+
+    private void joinStatements() {
+        List<String> list = new ArrayList<>();
+        List<String> otherList = new ArrayList<>();
+
+        // the future is always born in pain
+        /* tricky */assertThat(list).as("foo").hasSize(2); /* do one */ /* do another */
+        assertThat(list).as("bar").contains("barbar"); // comment to keep
+        assertThat(list).doesNotContain("barbara") // another comment to keep
+                .doesNotContain("wrzlbrmpft") // across two lines
+        ; /* and a multi line comment
+        after the statement */
+        assertThat(list).as("etc")/* what a nasty comment */.contains("etcetc");
+
+        // moar!
+        assertThat(list).doesNotContain("foobar");
+
+        assertThat("narf").isNotEqualTo("puit");
+        assertThat(list).as("bar").contains("barbar");
+        assertThat(list).as("foo").hasSize(2);
+        assertThat(list).as("evil").extracting(String::length).contains(2);
+
+        assertThat(list).as("bar").contains("barbar");
+        assertThat(otherList).contains("puit");
+        assertThat(list).as("foo").hasSize(2);
+        if (true) {
+            assertThat(list).doesNotContain("narf");
+            assertThat(list).as("bar").contains("barbar");
+        }
+        assertThat(list.get(0)).isNotEmpty();
+        assertThat(list.get(0)).hasSize(3);
+        assertThat(list.get(0)).isEqualTo("bar");
+
+        assertThat(otherList.get(0)).isNotEmpty();
+        assertThat(list.get(0)).hasSize(3);
+
+        assertThat(list.get(0) + "foo").isEqualTo("bar");
+        assertThat(list.get(0) + "foo").doesNotStartWith("foo");
+
+        assertThat(otherList.get(0) + "foo").isEqualTo("bar");
+        assertThat(list.get(0) + "foo").doesNotStartWith("foo");
+
+        Iterator<String> iterator = list.iterator();
+        assertThat(iterator.next()).isEqualTo("foo");
+        assertThat(iterator.next()).isEqualTo("bar");
+        assertThat(iterator.next().toLowerCase()).isEqualTo("foo");
+        assertThat(iterator.next().toLowerCase()).isEqualTo("bar");
+    }
+}

src/test/resources/inspections/ObjectIsNullOrNotNull/ObjectIsNullOrNotNullAfter.java

@@ -10,5 +10,8 @@ public class ObjectIsNull {
         assertThat("").isNotNull();
         assertThat("").as("nah").isNotNull();
         assertThat(new Object()).isNotNull();
+
+        assertThat(new Object()).as("foo").isNotNull().as("bar").isEqualTo(new Object()).as("etc").isNull();
+        assertThat(new Object()).as("foo").isEqualTo(null).as("bar").isEqualTo(new Object()).as("etc").isNotNull();
     }
 }

src/test/resources/inspections/ObjectIsNullOrNotNull/ObjectIsNullOrNotNullBefore.java

@@ -10,5 +10,8 @@ public class ObjectIsNull {
         assertThat("").isNotEqualTo(null);
         assertThat("").as("nah").isNotEqualTo(null);
         assertThat(new Object()).isNotEqualTo(null);
+
+        assertThat(new Object()).as("foo").isNotEqualTo(null).as("bar").isEqualTo(new Object()).as("etc").isEqualTo(null);
+        assertThat(new Object()).as("foo").isEqualTo(null).as("bar").isEqualTo(new Object()).as("etc").isNotEqualTo(null);
     }
 }

src/test/resources/inspections/Size/SizeAfter.java

@@ -0,0 +1,103 @@
+import java.util.ArrayList;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class Size {
+
+    private void size() {
+        ArrayList<String> list = new ArrayList<>();
+        ArrayList<String> otherList = new ArrayList<>();
+        long[] array = new long[5];
+        long[] otherArray = new long[4];
+        String string = "string";
+        StringBuilder stringBuilder = new StringBuilder();
+
+        assertThat(list).isEmpty();
+        assertThat(list).isEmpty();
+        assertThat(list).isNotEmpty();
+        assertThat(list).as("hi").isNotEmpty();
+        assertThat(list).isNotEmpty();
+        assertThat(list).isEmpty();
+        assertThat(list).isEmpty();
+        assertThat(list).hasSameSizeAs(otherList);
+        assertThat(list).hasSameSizeAs(array);
+        assertThat(list).hasSize(string.length());
+        assertThat(list).hasSize(stringBuilder.length());
+        assertThat(list).hasSize(1);
+        assertThat(list).hasSizeGreaterThan(otherList.size() * 2);
+        assertThat(list).hasSizeGreaterThanOrEqualTo(otherList.size() * 2);
+        assertThat(list).hasSizeLessThan(otherList.size() * 2);
+        assertThat(list).hasSizeLessThanOrEqualTo(otherList.size() * 2);
+        assertThat(list).hasSameSizeAs(otherList);
+        assertThat(list).hasSameSizeAs(array);
+        assertThat(list).hasSize(string.length());
+        assertThat(list).hasSize(stringBuilder.length());
+
+        assertThat(array).isEmpty();
+        assertThat(array).isEmpty();
+        assertThat(array).isNotEmpty();
+        assertThat(array).as("hi").isNotEmpty();
+        assertThat(array).isNotEmpty();
+        assertThat(array).isEmpty();
+        assertThat(array).isEmpty();
+        assertThat(array).hasSameSizeAs(list);
+        assertThat(array).hasSameSizeAs(otherArray);
+        assertThat(array).hasSize(string.length());
+        assertThat(array).hasSize(stringBuilder.length());
+        assertThat(array).hasSize(1);
+        assertThat(array).hasSizeGreaterThan(otherArray.length - 1);
+        assertThat(array).hasSizeGreaterThanOrEqualTo(otherArray.length + 1);
+        assertThat(array).hasSizeLessThan(otherArray.length - 3);
+        assertThat(array).hasSizeLessThanOrEqualTo(1 - otherArray.length);
+        assertThat(array).hasSameSizeAs(list);
+        assertThat(array).hasSameSizeAs(otherArray);
+        assertThat(array).hasSize(string.length());
+        assertThat(array).hasSize(stringBuilder.length());
+
+        assertThat(string).isEmpty();
+        assertThat(string).isEmpty();
+        assertThat(string).isNotEmpty();
+        assertThat(string).as("hi").isNotEmpty();
+        assertThat(string).isNotEmpty();
+        assertThat(string).isEmpty();
+        assertThat(string).isEmpty();
+        assertThat(string).hasSameSizeAs(list);
+        assertThat(string).hasSameSizeAs(otherArray);
+        assertThat(string).hasSameSizeAs(string);
+        assertThat(string).hasSameSizeAs(stringBuilder);
+        assertThat(string).hasSize(1);
+        assertThat(string).hasSizeGreaterThan(otherArray.length - 1);
+        assertThat(string).hasSizeGreaterThanOrEqualTo(otherArray.length + 1);
+        assertThat(string).hasSizeLessThan(otherArray.length - 3);
+        assertThat(string).hasSizeLessThanOrEqualTo(1 - otherArray.length);
+        assertThat(string).hasSameSizeAs(otherList);
+        assertThat(string).hasSameSizeAs(array);
+        assertThat(string).hasSameSizeAs(string);
+        assertThat(string).hasSameSizeAs(stringBuilder);
+
+        assertThat(stringBuilder).isEmpty();
+        assertThat(stringBuilder).isEmpty();
+        assertThat(stringBuilder).isNotEmpty();
+        assertThat(stringBuilder).as("hi").isNotEmpty();
+        assertThat(stringBuilder).isNotEmpty();
+        assertThat(stringBuilder).isEmpty();
+        assertThat(stringBuilder).isEmpty();
+        assertThat(stringBuilder).hasSameSizeAs(list);
+        assertThat(stringBuilder).hasSameSizeAs(otherArray);
+        assertThat(stringBuilder).hasSameSizeAs(string);
+        assertThat(stringBuilder).hasSameSizeAs(stringBuilder);
+        assertThat(stringBuilder).hasSize(1);
+        assertThat(stringBuilder).hasSizeGreaterThan(otherArray.length - 1);
+        assertThat(stringBuilder).hasSizeGreaterThanOrEqualTo(otherArray.length + 1);
+        assertThat(stringBuilder).hasSizeLessThan(otherArray.length - 3);
+        assertThat(stringBuilder).hasSizeLessThanOrEqualTo(1 - otherArray.length);
+        assertThat(stringBuilder).hasSameSizeAs(otherList);
+        assertThat(stringBuilder).hasSameSizeAs(array);
+        assertThat(stringBuilder).hasSameSizeAs(string);
+        assertThat(stringBuilder).hasSameSizeAs(stringBuilder);
+
+        assertThat(stringBuilder.length()).as("foo").isEqualTo(0).isZero().as("bar").isNotZero().isEqualTo(10);
+
+        assertThat(stringBuilder).as("foo").isNotEmpty().hasSize(2).as("bar").hasSameSizeAs(otherList).hasSameSizeAs(array);
+    }
+}

src/test/resources/inspections/Size/SizeBefore.java

@@ -0,0 +1,103 @@
+import java.util.ArrayList;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class Size {
+
+    private void size() {
+        ArrayList<String> list = new ArrayList<>();
+        ArrayList<String> otherList = new ArrayList<>();
+        long[] array = new long[5];
+        long[] otherArray = new long[4];
+        String string = "string";
+        StringBuilder stringBuilder = new StringBuilder();
+
+        assertThat(list.size()).isEqualTo(0);
+        assertThat(list.size()).isZero();
+        assertThat(list.size()).isNotZero();
+        assertThat(list.size()).as("hi").isGreaterThan(0);
+        assertThat(list.size()).isGreaterThanOrEqualTo(1);
+        assertThat(list.size()).isLessThan(1);
+        assertThat(list.size()).isLessThanOrEqualTo(0);
+        assertThat(list.size()).isEqualTo(otherList.size());
+        assertThat(list.size()).isEqualTo(array.length);
+        assertThat(list.size()).isEqualTo(string.length());
+        assertThat(list.size()).isEqualTo(stringBuilder.length());
+        assertThat(list.size()).isEqualTo(1);
+        assertThat(list.size()).isGreaterThan(otherList.size() * 2);
+        assertThat(list.size()).isGreaterThanOrEqualTo(otherList.size() * 2);
+        assertThat(list.size()).isLessThan(otherList.size() * 2);
+        assertThat(list.size()).isLessThanOrEqualTo(otherList.size() * 2);
+        assertThat(list).hasSize(otherList.size());
+        assertThat(list).hasSize(array.length);
+        assertThat(list).hasSize(string.length());
+        assertThat(list).hasSize(stringBuilder.length());
+
+        assertThat(array.length).isEqualTo(0);
+        assertThat(array.length).isZero();
+        assertThat(array.length).isNotZero();
+        assertThat(array.length).as("hi").isGreaterThan(0);
+        assertThat(array.length).isGreaterThanOrEqualTo(1);
+        assertThat(array.length).isLessThan(1);
+        assertThat(array.length).isLessThanOrEqualTo(0);
+        assertThat(array.length).isEqualTo(list.size());
+        assertThat(array.length).isEqualTo(otherArray.length);
+        assertThat(array.length).isEqualTo(string.length());
+        assertThat(array.length).isEqualTo(stringBuilder.length());
+        assertThat(array.length).isEqualTo(1);
+        assertThat(array.length).isGreaterThan(otherArray.length - 1);
+        assertThat(array.length).isGreaterThanOrEqualTo(otherArray.length + 1);
+        assertThat(array.length).isLessThan(otherArray.length - 3);
+        assertThat(array.length).isLessThanOrEqualTo(1 - otherArray.length);
+        assertThat(array).hasSize(list.size());
+        assertThat(array).hasSize(otherArray.length);
+        assertThat(array).hasSize(string.length());
+        assertThat(array).hasSize(stringBuilder.length());
+
+        assertThat(string.length()).isEqualTo(0);
+        assertThat(string.length()).isZero();
+        assertThat(string.length()).isNotZero();
+        assertThat(string.length()).as("hi").isGreaterThan(0);
+        assertThat(string.length()).isGreaterThanOrEqualTo(1);
+        assertThat(string.length()).isLessThan(1);
+        assertThat(string.length()).isLessThanOrEqualTo(0);
+        assertThat(string.length()).isEqualTo(list.size());
+        assertThat(string.length()).isEqualTo(otherArray.length);
+        assertThat(string.length()).isEqualTo(string.length());
+        assertThat(string.length()).isEqualTo(stringBuilder.length());
+        assertThat(string.length()).isEqualTo(1);
+        assertThat(string.length()).isGreaterThan(otherArray.length - 1);
+        assertThat(string.length()).isGreaterThanOrEqualTo(otherArray.length + 1);
+        assertThat(string.length()).isLessThan(otherArray.length - 3);
+        assertThat(string.length()).isLessThanOrEqualTo(1 - otherArray.length);
+        assertThat(string).hasSize(otherList.size());
+        assertThat(string).hasSize(array.length);
+        assertThat(string).hasSize(string.length());
+        assertThat(string).hasSize(stringBuilder.length());
+
+        assertThat(stringBuilder.length()).isEqualTo(0);
+        assertThat(stringBuilder.length()).isZero();
+        assertThat(stringBuilder.length()).isNotZero();
+        assertThat(stringBuilder.length()).as("hi").isGreaterThan(0);
+        assertThat(stringBuilder.length()).isGreaterThanOrEqualTo(1);
+        assertThat(stringBuilder.length()).isLessThan(1);
+        assertThat(stringBuilder.length()).isLessThanOrEqualTo(0);
+        assertThat(stringBuilder.length()).isEqualTo(list.size());
+        assertThat(stringBuilder.length()).isEqualTo(otherArray.length);
+        assertThat(stringBuilder.length()).isEqualTo(string.length());
+        assertThat(stringBuilder.length()).isEqualTo(stringBuilder.length());
+        assertThat(stringBuilder.length()).isEqualTo(1);
+        assertThat(stringBuilder.length()).isGreaterThan(otherArray.length - 1);
+        assertThat(stringBuilder.length()).isGreaterThanOrEqualTo(otherArray.length + 1);
+        assertThat(stringBuilder.length()).isLessThan(otherArray.length - 3);
+        assertThat(stringBuilder.length()).isLessThanOrEqualTo(1 - otherArray.length);
+        assertThat(stringBuilder).hasSize(otherList.size());
+        assertThat(stringBuilder).hasSize(array.length);
+        assertThat(stringBuilder).hasSize(string.length());
+        assertThat(stringBuilder).hasSize(stringBuilder.length());
+
+        assertThat(stringBuilder.length()).as("foo").isEqualTo(0).isZero().as("bar").isNotZero().isEqualTo(10);
+
+        assertThat(stringBuilder).as("foo").isNotEmpty().hasSize(2).as("bar").hasSize(otherList.size()).hasSize(array.length);
+    }
+}

src/test/resources/inspections/StringExpression/StringExpressionAfter.java

@@ -0,0 +1,51 @@
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class StringExpression {
+
+    private void stringExpression() {
+        String string = "string";
+        StringBuilder stringBuilder = new StringBuilder();
+
+        assertThat(string).as("foo").isEmpty();
+        assertThat(string).isEmpty();
+        assertThat(string).isEqualTo("foo");
+        assertThat(string).isEqualTo("foo");
+        assertThat(string).isEqualToIgnoringCase("foo");
+        assertThat(string).isEqualToIgnoringCase("foo");
+        assertThat(string).isEqualTo("foo");
+        assertThat(string).isEqualTo("foo");
+        assertThat(string).isEqualTo(stringBuilder);
+        assertThat(string).isEqualTo(stringBuilder);
+        assertThat(string).contains("foo");
+        assertThat(string).contains("foo");
+        assertThat(string).contains(stringBuilder);
+        assertThat(string).contains(stringBuilder);
+        assertThat(string).startsWith("foo");
+        assertThat(string).startsWith("foo");
+        assertThat(string).endsWith("foo");
+        assertThat(string).endsWith("foo");
+
+        assertThat(string).as("foo").isNotEmpty();
+        assertThat(string).isNotEmpty();
+        assertThat(string).isNotEqualTo("foo");
+        assertThat(string).isNotEqualTo("foo");
+        assertThat(string).isNotEqualToIgnoringCase("foo");
+        assertThat(string).isNotEqualToIgnoringCase("foo");
+        assertThat(string).isNotEqualTo("foo");
+        assertThat(string).isNotEqualTo("foo");
+        assertThat(string).isNotEqualTo(stringBuilder);
+        assertThat(string).isNotEqualTo(stringBuilder);
+        assertThat(string).doesNotContain("foo");
+        assertThat(string).doesNotContain("foo");
+        assertThat(string).doesNotContain(stringBuilder);
+        assertThat(string).doesNotContain(stringBuilder);
+        assertThat(string).doesNotStartWith("foo");
+        assertThat(string).doesNotStartWith("foo");
+        assertThat(string).doesNotEndWith("foo");
+        assertThat(string).doesNotEndWith("foo");
+
+        assertThat(string).as("foo").doesNotEndWith("foo").as("bar").doesNotEndWith("foo");
+        assertThat(string.endsWith("foo")).as("foo").isEqualTo(false).as("bar").isTrue();
+        assertThat(string.endsWith("foo")).as("foo").satisfies(it -> it.booleanValue()).as("bar").isFalse();
+    }
+}

src/test/resources/inspections/StringExpression/StringExpressionBefore.java

@@ -0,0 +1,51 @@
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class StringExpression {
+
+    private void stringExpression() {
+        String string = "string";
+        StringBuilder stringBuilder = new StringBuilder();
+
+        assertThat(string.isEmpty()).as("foo").isEqualTo(true);
+        assertThat(string.isEmpty()).isTrue();
+        assertThat(string.equals("foo")).isEqualTo(true);
+        assertThat(string.equals("foo")).isTrue();
+        assertThat(string.equalsIgnoreCase("foo")).isEqualTo(true);
+        assertThat(string.equalsIgnoreCase("foo")).isTrue();
+        assertThat(string.contentEquals("foo")).isEqualTo(true);
+        assertThat(string.contentEquals("foo")).isTrue();
+        assertThat(string.contentEquals(stringBuilder)).isEqualTo(true);
+        assertThat(string.contentEquals(stringBuilder)).isTrue();
+        assertThat(string.contains("foo")).isEqualTo(true);
+        assertThat(string.contains("foo")).isTrue();
+        assertThat(string.contains(stringBuilder)).isEqualTo(true);
+        assertThat(string.contains(stringBuilder)).isTrue();
+        assertThat(string.startsWith("foo")).isEqualTo(true);
+        assertThat(string.startsWith("foo")).isTrue();
+        assertThat(string.endsWith("foo")).isEqualTo(true);
+        assertThat(string.endsWith("foo")).isTrue();
+
+        assertThat(string.isEmpty()).as("foo").isEqualTo(false);
+        assertThat(string.isEmpty()).isFalse();
+        assertThat(string.equals("foo")).isEqualTo(false);
+        assertThat(string.equals("foo")).isFalse();
+        assertThat(string.equalsIgnoreCase("foo")).isEqualTo(false);
+        assertThat(string.equalsIgnoreCase("foo")).isFalse();
+        assertThat(string.contentEquals("foo")).isEqualTo(false);
+        assertThat(string.contentEquals("foo")).isFalse();
+        assertThat(string.contentEquals(stringBuilder)).isEqualTo(false);
+        assertThat(string.contentEquals(stringBuilder)).isFalse();
+        assertThat(string.contains("foo")).isEqualTo(false);
+        assertThat(string.contains("foo")).isFalse();
+        assertThat(string.contains(stringBuilder)).isEqualTo(false);
+        assertThat(string.contains(stringBuilder)).isFalse();
+        assertThat(string.startsWith("foo")).isEqualTo(false);
+        assertThat(string.startsWith("foo")).isFalse();
+        assertThat(string.endsWith("foo")).isEqualTo(false);
+        assertThat(string.endsWith("foo")).isFalse();
+
+        assertThat(string.endsWith("foo")).as("foo").isEqualTo(false).as("bar").isFalse();
+        assertThat(string.endsWith("foo")).as("foo").isEqualTo(false).as("bar").isTrue();
+        assertThat(string.endsWith("foo")).as("foo").satisfies(it -> it.booleanValue()).as("bar").isFalse();
+    }
+}

src/test/resources/inspections/StringIsEmpty/StringIsEmptyAfter.java

@@ -15,5 +15,8 @@ public class StringIsEmpty {
         assertThat(stringBuilder).as("bar").isEmpty();
 
         assertThat(new Object()).isEqualTo("");
+
+        assertThat(string).as("foo").isEqualTo("").as("bar").hasSize(0).hasSameSizeAs("foo").isEmpty();
+        assertThat(string).as("foo").isEqualTo("").as("bar").hasSize(0).hasSameSizeAs("foo").isEmpty();
     }
 }

src/test/resources/inspections/StringIsEmpty/StringIsEmptyBefore.java

@@ -15,5 +15,8 @@ public class StringIsEmpty {
         assertThat(stringBuilder).as("bar").hasSize(0);
 
         assertThat(new Object()).isEqualTo("");
+
+        assertThat(string).as("foo").isEqualTo("").as("bar").hasSize(0).hasSameSizeAs("foo").isEqualTo("");
+        assertThat(string).as("foo").isEqualTo("").as("bar").hasSize(0).hasSameSizeAs("foo").hasSize(0);
     }
 }