The JoinAssertThatStatements inspection will now add line breaks on joining statements.

Unrelated: Upgraded Gradle to 5.4.1. Upgraded kotlin to 1.3.40. Upgraded jacoco to 0.8.4. Minor style change for immediate returns. Increased test/branch coverage.

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

@@ -195,5 +195,8 @@ public class BinaryExpression {
         assertThat(primAct == primExp).isFalse().as("doh!").isEqualTo(true);
 
         assertThat(numberObjAct.equals(numberObjExp)).as("doh!").isTrue().isEqualTo(true);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -195,5 +195,8 @@ public class BinaryExpression {
         assertThat(primAct == primExp).isFalse().as("doh!").isEqualTo(true);
 
         assertThat(numberObjAct.equals(numberObjExp)).as("doh!").isTrue().isEqualTo(true);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -30,5 +30,9 @@ public class BooleanCondition {
         assertThat("").isEqualTo(Boolean.TRUE);
 
         assertThat(primitive).isTrue().as("foo").isTrue().as("bar").isTrue().isFalse();
+
+        assertThat(object).isEqualTo(Boolean.TYPE);
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -30,5 +30,9 @@ public class BooleanCondition {
         assertThat("").isEqualTo(Boolean.TRUE);
 
         assertThat(primitive).isEqualTo(Boolean.TRUE).as("foo").isEqualTo(true).as("bar").isTrue().isFalse();
+
+        assertThat(object).isEqualTo(Boolean.TYPE);
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

src/test/resources/inspections/CollectionMapExpression/CollectionMapExpressionAfter.java

@@ -40,5 +40,8 @@ public class CollectionMapExpression {
         assertThat(stringList).as("foo").isNotEmpty().as("bar").isNotEmpty();
         assertThat(stringList.isEmpty()).as("foo").isEqualTo(false).as("bar").isTrue();
         assertThat(stringList.isEmpty()).as("foo").satisfies(it -> it.booleanValue()).as("bar").isFalse();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

src/test/resources/inspections/CollectionMapExpression/CollectionMapExpressionBefore.java

@@ -40,5 +40,8 @@ public class CollectionMapExpression {
         assertThat(stringList.isEmpty()).as("foo").isEqualTo(false).as("bar").isFalse();
         assertThat(stringList.isEmpty()).as("foo").isEqualTo(false).as("bar").isTrue();
         assertThat(stringList.isEmpty()).as("foo").satisfies(it -> it.booleanValue()).as("bar").isFalse();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -16,5 +16,8 @@ public class EnumerableIsEmpty {
         assertThat(new Long[1]).as("etc").hasSize(1);
 
         assertThat("string").as("foo").hasSize(0).hasSameSizeAs("foo").isEmpty();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -16,5 +16,8 @@ public class EnumerableIsEmpty {
         assertThat(new Long[1]).as("etc").hasSize(1);
 
         assertThat("string").as("foo").hasSize(0).hasSameSizeAs("foo").hasSize(0);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -56,5 +56,10 @@ public class GuavaOptional {
 
         assertThat(opt).as("foo").isPresent().as("bar").isPresent();
         assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isEqualTo(Boolean.FALSE);
+
+        assertThat(opt.orNull()).as("foo").isEqualTo(null).isNotNull();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -56,5 +56,10 @@ public class GuavaOptional {
 
         assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isEqualTo(Boolean.TRUE);
         assertThat(opt.isPresent()).as("foo").isEqualTo(true).as("bar").isEqualTo(Boolean.FALSE);
+
+        assertThat(opt.orNull()).as("foo").isEqualTo(null).isNotNull();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

src/test/resources/inspections/ImplicitAssertion/ImplicitAssertionAfter.java

@@ -284,5 +284,8 @@ public class ImplicitAssertion {
         assertThat(guavaOptional).contains("foo");
         assertThat(guavaOptional).extractingValue().isEqualTo("foo");
         assertThat(guavaOptional).extractingCharSequence().isEqualTo("foo");
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

src/test/resources/inspections/ImplicitAssertion/ImplicitAssertionBefore.java

@@ -284,5 +284,8 @@ public class ImplicitAssertion {
         assertThat(guavaOptional).isPresent().contains("foo");
         assertThat(guavaOptional).isPresent().extractingValue().isEqualTo("foo");
         assertThat(guavaOptional).isPresent().extractingCharSequence().isEqualTo("foo");
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -21,5 +21,8 @@ public class InstanceOf {
 
         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);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -21,5 +21,8 @@ public class InstanceOf {
 
         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);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -35,5 +35,8 @@ public class InvertedBooleanCondition {
 
         assertThat(primitive).as("foo").isFalse().as("bar").isFalse();
         assertThat(primitive).as("foo").isFalse().as("bar").isTrue();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -35,5 +35,8 @@ public class InvertedBooleanCondition {
 
         assertThat(!primitive).as("foo").isEqualTo(Boolean.TRUE).as("bar").isNotEqualTo(false);
         assertThat(!primitive).as("foo").isEqualTo(Boolean.TRUE).as("bar").isNotEqualTo(true);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -43,5 +43,10 @@ public class Java8Optional {
         assertThat(opt.get()).isEqualTo("foo").isSameAs("foo").isNotEqualTo("foo").isNotSameAs("foo");
 
         assertThat(opt.orElse("foo")).as("foo").isEqualTo(null);
+
+        assertThat(opt.orElse(null)).as("foo").isEqualTo(null).isNotNull();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -43,5 +43,10 @@ public class Java8Optional {
         assertThat(opt.get()).isEqualTo("foo").isSameAs("foo").isNotEqualTo("foo").isNotSameAs("foo");
 
         assertThat(opt.orElse("foo")).as("foo").isEqualTo(null);
+
+        assertThat(opt.orElse(null)).as("foo").isEqualTo(null).isNotNull();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -1,6 +1,7 @@
 import java.util.*;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.fail;
 
 public class JoinStatements {
 
@@ -24,21 +25,28 @@ public class JoinStatements {
                 .doesNotContain("foobar");
 
         assertThat("narf").isNotEqualTo("puit");
-        assertThat(list).as("bar").contains("barbar").as("foo").hasSize(2);
+        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).doesNotContain("narf")
+                    .as("bar").contains("barbar");
         }
-        assertThat(list.get(0)).isNotEmpty().hasSize(3).isEqualTo("bar");
+        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(list.get(0) + "foo").isNotNull()
+                // hey, a comment mixed with line breaks due to too many joins
+                .isEqualTo("bar")
+                .doesNotStartWith("foo");
 
         assertThat(otherList.get(0) + "foo").isEqualTo("bar");
         assertThat(list.get(0) + "foo").doesNotStartWith("foo");
@@ -57,5 +65,8 @@ public class JoinStatements {
         assertThat(list.get(i++).toLowerCase()).isEqualTo("foo");
         assertThat(list.get(--i)).isEqualTo("foo");
         assertThat(list.get(--i)).isEqualTo("foo");
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -1,6 +1,7 @@
 import java.util.*;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.fail;
 
 public class JoinStatements {
 
@@ -39,6 +40,8 @@ public class JoinStatements {
         assertThat(otherList.get(0)).isNotEmpty();
         assertThat(list.get(0)).hasSize(3);
 
+        assertThat(list.get(0) + "foo").isNotNull();
+        // hey, a comment mixed with line breaks due to too many joins
         assertThat(list.get(0) + "foo").isEqualTo("bar");
         assertThat(list.get(0) + "foo").doesNotStartWith("foo");
 
@@ -59,5 +62,8 @@ public class JoinStatements {
         assertThat(list.get(i++).toLowerCase()).isEqualTo("foo");
         assertThat(list.get(--i)).isEqualTo("foo");
         assertThat(list.get(--i)).isEqualTo("foo");
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

src/test/resources/inspections/ObjectExpression/ObjectExpressionAfter.java

@@ -23,5 +23,8 @@ public class ObjectExpression {
         assertThat(object.equals(otherObject)).isEqualTo(foo);
 
         assertThat(object).as("doh!").isEqualTo(otherObject).isEqualTo(otherObject);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

src/test/resources/inspections/ObjectExpression/ObjectExpressionBefore.java

@@ -23,5 +23,8 @@ public class ObjectExpression {
         assertThat(object.equals(otherObject)).isEqualTo(foo);
 
         assertThat(object.equals(otherObject)).as("doh!").isTrue().isEqualTo(true);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -13,5 +13,8 @@ public class ObjectIsNull {
 
         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();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -13,5 +13,8 @@ public class ObjectIsNull {
 
         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);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -99,5 +99,12 @@ public class Size {
         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);
+
+        int foo = 1;
+        assertThat(foo).isEqualTo(0);
+        assertThat(string.length()).isPositive();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -99,5 +99,12 @@ public class Size {
         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);
+
+        int foo = 1;
+        assertThat(foo).isEqualTo(0);
+        assertThat(string.length()).isPositive();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -49,5 +49,8 @@ public class StringExpression {
         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();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -49,5 +49,8 @@ public class StringExpression {
         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();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -18,5 +18,8 @@ public class StringIsEmpty {
 
         assertThat(string).as("foo").isEqualTo("").as("bar").hasSize(0).hasSameSizeAs("foo").isEmpty();
         assertThat(string).as("foo").isEqualTo("").as("bar").hasSize(0).hasSameSizeAs("foo").isEmpty();
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

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

@@ -18,5 +18,8 @@ public class StringIsEmpty {
 
         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);
+
+        org.junit.Assert.assertThat(foo, null);
+        fail("oh no!");
     }
 }

src/test/resources/references/FindReference11.java

@@ -0,0 +1,15 @@
+import org.assertj.core.extractor.Extractors;
+
+import java.util.Collections;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class FindReference10 {
+
+    private void findReferences() {
+        List<Contact> contactList = Collections.emptyList();
+
+        assertThat(contactList).extracting("narf<caret>").isEqualTo("foo");
+    }
+}