Add instrumentation to locate not cleared MockApplication

compiler/tests-common/tests/org/jetbrains/kotlin/test/testFramework/KtUsefulTestCase.java

@@ -40,6 +40,7 @@ import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NonNls;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import org.jetbrains.kotlin.testFramework.MockComponentManagerCreationTracer;
 import org.jetbrains.kotlin.types.FlexibleTypeImpl;
 import org.jetbrains.kotlin.utils.ExceptionUtilsKt;
 import org.junit.Assert;
@@ -88,6 +89,10 @@ public abstract class KtUsefulTestCase extends TestCase {
     protected void setUp() throws Exception {
         application = ApplicationManager.getApplication();
 
+        if (application != null && application.isDisposed()) {
+            MockComponentManagerCreationTracer.diagnoseDisposedButNotClearedApplication(application);
+        }
+
         super.setUp();
 
         String testName =  FileUtil.sanitizeFileName(getTestName(true));

compiler/tests-common/tests/org/jetbrains/kotlin/testFramework/MockComponentManagerCreationTracer.kt

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2010-2017 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.testFramework
+
+import com.intellij.mock.MockComponentManager
+import com.intellij.openapi.application.Application
+import com.intellij.util.containers.ContainerUtil
+import org.jetbrains.kotlin.test.testFramework.KtUsefulTestCase
+
+object MockComponentManagerCreationTracer {
+
+    private val creationTraceMap = ContainerUtil.createConcurrentWeakMap<MockComponentManager, Throwable>()
+
+    @JvmStatic
+    fun onCreate(manager: MockComponentManager) {
+        creationTraceMap[manager] = Exception("Creation trace")
+    }
+
+    @JvmStatic
+    fun onGetComponentInstance(manager: MockComponentManager) {
+        if (manager.isDisposed) {
+            val trace = creationTraceMap[manager] ?: return
+            trace.printStackTrace(System.err)
+        }
+    }
+
+    @JvmStatic
+    fun diagnoseDisposedButNotClearedApplication(app: Application) {
+        if (app is MockComponentManager) {
+            KtUsefulTestCase.resetApplicationToNull()
+            throw IllegalStateException("Some test disposed, but forgot to clear MockApplication", creationTraceMap[app])
+        }
+    }
+}