IDEA 142.4859.6: Invalidate library cache in setUp() to prevent access to

ClsFiles invalidated by the previous test

idea/idea-test-framework/src/org/jetbrains/kotlin/idea/test/JetLightCodeInsightFixtureTestCase.kt

@@ -55,6 +55,8 @@ public abstract class JetLightCodeInsightFixtureTestCase : LightCodeInsightFixtu
 
         getProject().getComponent(javaClass<EditorTracker>())?.projectOpened()
 
+        invalidateLibraryCache(project)
+
         LoggedErrorProcessor.setNewInstance(object : LoggedErrorProcessor() {
             override fun processError(message: String?, t: Throwable?, details: Array<out String>?, logger: Logger) {
                 exceptions.addIfNotNull(t)

idea/idea-test-framework/src/org/jetbrains/kotlin/idea/test/KotlinLightPlatformCodeInsightFixtureTestCase.kt

@@ -30,6 +30,7 @@ public abstract class KotlinLightPlatformCodeInsightFixtureTestCase: LightPlatfo
         super.setUp()
         (StartupManager.getInstance(getProject()) as StartupManagerImpl).runPostStartupActivities()
         VfsRootAccess.allowRootAccess(JetTestUtils.getHomeDirectory())
+        invalidateLibraryCache(project)
 
         kotlinInternalModeOriginalValue = KotlinInternalMode.enabled
         KotlinInternalMode.enabled = true

idea/idea-test-framework/src/org/jetbrains/kotlin/idea/test/testUtils.kt

@@ -27,6 +27,7 @@ import com.intellij.testFramework.LightProjectDescriptor
 import com.intellij.util.Consumer
 import org.jetbrains.kotlin.diagnostics.Severity
 import org.jetbrains.kotlin.diagnostics.rendering.DefaultErrorMessages
+import org.jetbrains.kotlin.idea.caches.resolve.LibraryModificationTracker
 import org.jetbrains.kotlin.idea.caches.resolve.analyzeFullyAndGetResult
 import org.jetbrains.kotlin.idea.js.KotlinJavaScriptLibraryManager
 import org.jetbrains.kotlin.idea.references.BuiltInsReferenceResolver
@@ -95,3 +96,7 @@ public fun unInvalidateBuiltins(project: Project, runnable: RunnableWithExceptio
 public fun unInvalidateBuiltins(project: Project, runnable: () -> Unit) {
     unInvalidateBuiltins(project, RunnableWithException { runnable() })
 }
+
+public fun invalidateLibraryCache(project: Project) {
+    LibraryModificationTracker.getInstance(project).incModificationCount()
+}