Updated various dependencies (Kotlin 1.5.21) and AssertJ 3.20.2. Latest Gradle. Migrated to latest intellij-gradle-plugin. Slightly fixed a situation in LightCodeInsightExtension, where the fields were cleared in super-Method before they had been evaluated.

build.gradle

@@ -1,7 +1,7 @@
 plugins {
     id 'java'
-    id 'org.jetbrains.intellij' version '0.7.2'
-    id 'org.jetbrains.kotlin.jvm' version '1.5.0'
+    id 'org.jetbrains.intellij' version '1.1.3'
+    id 'org.jetbrains.kotlin.jvm' version '1.5.21'
     id 'jacoco'
     id 'com.github.kt3k.coveralls' version '2.11.0'
 }
@@ -22,11 +22,12 @@ repositories {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
-    testImplementation "org.assertj:assertj-core:3.19.0"
+    testImplementation "org.assertj:assertj-core:3.20.2"
     testImplementation "org.assertj:assertj-guava:3.4.0"
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.0-M1'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.0-M1'
     testImplementation "org.jetbrains.kotlin:kotlin-test"
+    testImplementation "org.jetbrains.kotlin:kotlin-reflect"
 //    testImplementation "org.jetbrains.kotlin:kotlin-test-junit"
 }
 
@@ -39,21 +40,21 @@ compileTestKotlin {
 }
 
 intellij {
-    version '2021.1.1' // LATEST-EAP-SNAPSHOT
-//    pluginName 'Concise AssertJ Optimizing Nitpicker (Cajon)'
-    updateSinceUntilBuild false
-    plugins = ['java']
+    setVersion("2021.1.3") // LATEST-EAP-SNAPSHOT
+    //pluginName.set(provider { 'Concise AssertJ Optimizing Nitpicker (Cajon)' })
+    setUpdateSinceUntilBuild(false)
+    setPlugins(["com.intellij.java"])
 }
 
 patchPluginXml {
-    changeNotes """
+    setChangeNotes("""
   <h4>V1.12 (06-May-21)</h4>
     <ul>
       <li>Maintenance. Updated various dependencies (Kotlin 1.50.0) and AssertJ 3.19.0
       <li>Fixed issue#3 reported by hankem where usingRecursiveComparison() was not considered a complex transformation.
     </ul>
   <p>Full changelog available at <a href="https://github.com/chrisly42/cajon-plugin#changelog">Github project site</a>.</p>
-"""
+""")
 }
 
 test {
@@ -69,11 +70,11 @@ jacoco {
 
 jacocoTestReport {
     reports {
-        xml.enabled true
-        csv.enabled false
+        xml.required.set(true)
+        csv.required.set(false)
     }
 }
 
 publishPlugin {
-    token intellijPublishToken
+    setToken(intellijPublishToken)
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.1.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-all.zip

gradlew

@@ -72,7 +72,7 @@ case "`uname`" in
   Darwin* )
     darwin=true
     ;;
-  MINGW* )
+  MSYS* | MINGW* )
     msys=true
     ;;
   NONSTOP* )
@@ -130,7 +130,7 @@ fi
 if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
     APP_HOME=`cygpath --path --mixed "$APP_HOME"`
     CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-    
+
     JAVACMD=`cygpath --unix "$JAVACMD"`
 
     # We build the pattern for arguments to be converted via cygpath

gradlew.bat

@@ -40,7 +40,7 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
+if "%ERRORLEVEL%" == "0" goto execute
 
 echo.
 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
@@ -54,7 +54,7 @@ goto fail
 set JAVA_HOME=%JAVA_HOME:"=%
 set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
-if exist "%JAVA_EXE%" goto init
+if exist "%JAVA_EXE%" goto execute
 
 echo.
 echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
@@ -64,21 +64,6 @@ echo location of your Java installation.
 
 goto fail
 
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
 :execute
 @rem Setup the command line
 
@@ -86,7 +71,7 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 
 @rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
 
 :end
 @rem End local scope for the variables with windows NT shell

src/test/java/de/platon42/intellij/jupiter/LightCodeInsightExtension.java

@@ -16,7 +16,10 @@ import com.intellij.openapi.roots.libraries.ui.OrderRoot;
 import com.intellij.openapi.util.Disposer;
 import com.intellij.openapi.vfs.LocalFileSystem;
 import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.testFramework.*;
+import com.intellij.testFramework.EdtTestUtilKt;
+import com.intellij.testFramework.LightProjectDescriptor;
+import com.intellij.testFramework.PsiTestUtil;
+import com.intellij.testFramework.TestLoggerFactory;
 import com.intellij.testFramework.fixtures.IdeaTestExecutionPolicy;
 import com.intellij.testFramework.fixtures.JavaCodeInsightTestFixture;
 import com.intellij.testFramework.fixtures.LightJavaCodeInsightFixtureTestCase;
@@ -140,14 +143,13 @@ public class LightCodeInsightExtension implements ParameterResolver, AfterTestEx
 
         @Override
         public void tearDown() throws Exception {
-            super.tearDown();
             Store store = getStore(extensionContext);
             Disposable disposable = (Disposable) store.get("disposable");
-            UsefulTestCase.clearFields(this);
             if (myFixture != null && disposable != null) {
                 Disposer.dispose(disposable);
                 store.remove("disposable");
             }
+            super.tearDown();
         }
 
         @NotNull