a test for method signatures leak

java/java-tests/testSrc/com/intellij/psi/AstLeaksTest.groovy

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+/*
+ * Copyright 2000-2012 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.openapi.application.ApplicationManager
+import com.intellij.psi.impl.source.tree.java.JavaFileElement
+import com.intellij.psi.impl.source.tree.java.MethodElement
+import com.intellij.testFramework.LeakHunter
+import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase
+import com.intellij.util.Processor
+
+/**
+ * @author peter
+ */
+class AstLeaksTest extends LightCodeInsightFixtureTestCase {
+
+  public void "_test AST should be on a soft reference, for changed files as well"() {
+    def file = myFixture.addClass('class Foo {}').containingFile
+    assert file.findElementAt(0) instanceof PsiKeyword
+    LeakHunter.checkLeak(file, JavaFileElement)
+
+    ApplicationManager.application.runWriteAction {
+      file.viewProvider.document.insertString(0, ' ')
+      PsiDocumentManager.getInstance(project).commitAllDocuments()
+      assert file.findElementAt(0) instanceof PsiWhiteSpace
+    }
+
+    LeakHunter.checkLeak(file, JavaFileElement)
+  }
+
+  public void "test super methods held via their signatures in class user data"() {
+    def superClass = myFixture.addClass('class Super { void foo() {} }')
+    superClass.text // load AST
+
+    def file = myFixture.addFileToProject('Main.java', 'class Main extends Super { void foo() { System.out.println("hello"); } }')
+    myFixture.configureFromExistingVirtualFile(file.virtualFile)
+    myFixture.doHighlighting()
+
+    def mainClass = ((PsiJavaFile) file).classes[0]
+
+    LeakHunter.checkLeak(mainClass, MethodElement, { MethodElement node ->
+      superClass == node.psi.parent
+    } as Processor<MethodElement>)
+  }
+
+}