IDEA-161070 Memory leaks of LightVirtualFiles

2026-09-27 06:05:01 +07:00 · 2016-09-12 17:01:15 +02:00
parent ed650f151d
commit 83e006b1c1
4 changed files with 106 additions and 5 deletions
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2000-2016 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 com.intellij.psi;
+
+import com.intellij.codeInsight.AnnotationUtil;
+import com.intellij.ide.highlighter.JavaFileType;
+import com.intellij.openapi.editor.Document;
+import com.intellij.openapi.fileEditor.FileDocumentManager;
+import com.intellij.openapi.projectRoots.Sdk;
+import com.intellij.openapi.util.Key;
+import com.intellij.testFramework.LeakHunter;
+import com.intellij.testFramework.LightProjectDescriptor;
+import com.intellij.testFramework.LightVirtualFile;
+import com.intellij.testFramework.PsiTestUtil;
+import com.intellij.testFramework.fixtures.DefaultLightProjectDescriptor;
+import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase;
+import com.intellij.util.GCUtil;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author peter
+ */
+public class LightVirtualFileLeaksTest extends LightCodeInsightFixtureTestCase {
+  private Key<Boolean> myKey;
+  private static final DefaultLightProjectDescriptor PROJECT_DESCRIPTOR = new DefaultLightProjectDescriptor() {
+    @Override
+    public Sdk getSdk() {
+      return PsiTestUtil.addJdkAnnotations(super.getSdk());
+    }
+  };
+
+  @Override
+  protected void setUp() throws Exception {
+    super.setUp();
+    myKey = Key.create(getName());
+  }
+
+  @NotNull
+  @Override
+  protected LightProjectDescriptor getProjectDescriptor() {
+    return PROJECT_DESCRIPTOR;
+  }
+
+  public void testDoNotLeakViaDocument() {
+    createFileWithDocument();
+    checkLeak();
+  }
+
+  private void createFileWithDocument() {
+    Document document = FileDocumentManager.getInstance().getDocument(createLightFile());
+    assertNotNull(document);
+    PsiJavaFile psiFile = (PsiJavaFile)PsiDocumentManager.getInstance(getProject()).getPsiFile(document);
+    assertSame(document, PsiDocumentManager.getInstance(getProject()).getDocument(psiFile));
+  }
+
+  private void checkLeak() {
+    GCUtil.tryGcSoftlyReachableObjects();
+    LeakHunter.checkLeak(getProject(), LightVirtualFile.class, vf -> vf.getUserData(myKey) == Boolean.TRUE);
+  }
+
+  public void testDoNotLeakViaExternalAnnotations() {
+    queryExternalAnnotations();
+    checkLeak();
+  }
+
+  private void queryExternalAnnotations() {
+    LightVirtualFile vFile = createLightFile();
+    assertEmpty(AnnotationUtil.getAllAnnotations(((PsiJavaFile)getPsiManager().findFile(vFile)).getClasses()[0], true, null));
+  }
+
+  @NotNull
+  private LightVirtualFile createLightFile() {
+    LightVirtualFile vFile = new LightVirtualFile(getName() + ".java", JavaFileType.INSTANCE, "class Foo {}");
+    vFile.putUserData(myKey, Boolean.TRUE);
+    return vFile;
+  }
+}