Add enable / disable feature in Gradle (Groovy) project, forTests option

Part of KT-26775

idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/KotlinProjectConfigurator.kt

@@ -56,7 +56,12 @@ interface KotlinProjectConfigurator {
 
     fun changeCoroutineConfiguration(module: Module, state: LanguageFeature.State)
 
-    fun changeGeneralFeatureConfiguration(module: Module, feature: LanguageFeature, state: LanguageFeature.State)
+    fun changeGeneralFeatureConfiguration(
+        module: Module,
+        feature: LanguageFeature,
+        state: LanguageFeature.State,
+        forTests: Boolean
+    )
 
     fun addLibraryDependency(module: Module, element: PsiElement, library: ExternalLibraryDescriptor, libraryJarDescriptors: List<LibraryJarDescriptor>)
 

idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/KotlinWithLibraryConfigurator.kt

@@ -348,7 +348,8 @@ abstract class KotlinWithLibraryConfigurator protected constructor() : KotlinPro
     override fun changeGeneralFeatureConfiguration(
         module: Module,
         feature: LanguageFeature,
-        state: LanguageFeature.State
+        state: LanguageFeature.State,
+        forTests: Boolean
     ) {
         val sinceVersion = feature.sinceApiVersion
 

idea/idea-jvm/src/org/jetbrains/kotlin/idea/quickfix/ChangeGeneralLanguageFeatureSupportFix.kt

@@ -9,6 +9,7 @@ import com.intellij.codeInsight.intention.IntentionAction
 import com.intellij.openapi.editor.Editor
 import com.intellij.openapi.module.ModuleUtilCore
 import com.intellij.openapi.project.Project
+import com.intellij.openapi.roots.ModuleRootManager
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.diagnostics.Diagnostic
@@ -16,6 +17,7 @@ import org.jetbrains.kotlin.idea.compiler.configuration.KotlinCompilerSettings
 import org.jetbrains.kotlin.idea.configuration.BuildSystemType
 import org.jetbrains.kotlin.idea.configuration.findApplicableConfigurator
 import org.jetbrains.kotlin.idea.configuration.getBuildSystemType
+import org.jetbrains.kotlin.idea.core.isInTestSourceContentKotlinAware
 import org.jetbrains.kotlin.idea.facet.KotlinFacet
 import org.jetbrains.kotlin.idea.roots.invalidateProjectRoots
 import org.jetbrains.kotlin.psi.KtFile
@@ -35,8 +37,9 @@ sealed class ChangeGeneralLanguageFeatureSupportFix(
 
         override fun invoke(project: Project, editor: Editor?, file: KtFile) {
             val module = ModuleUtilCore.findModuleForPsiElement(file) ?: return
+            val forTests = ModuleRootManager.getInstance(module).fileIndex.isInTestSourceContentKotlinAware(file.virtualFile)
 
-            findApplicableConfigurator(module).changeGeneralFeatureConfiguration(module, feature, featureSupport)
+            findApplicableConfigurator(module).changeGeneralFeatureConfiguration(module, feature, featureSupport, forTests)
         }
     }