test/jdk/com/apple/laf/ScreenMenu/ScreenMenuMemoryLeakTest.java
changeset 47216 71c04702a3d5
parent 46151 5fa789776f7d
child 47387 4d711a58bb3b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/com/apple/laf/ScreenMenu/ScreenMenuMemoryLeakTest.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,108 @@
+/*
+ * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @key headful
+ * @bug 8158325
+ * @summary Memory leak in com.apple.laf.ScreenMenu: removed JMenuItems are still referenced
+ * @requires (os.family == "mac")
+ * @run main/timeout=300/othervm -Xmx16m ScreenMenuMemoryLeakTest
+ */
+
+import java.awt.EventQueue;
+import java.lang.ref.WeakReference;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Objects;
+
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+import javax.swing.JMenu;
+import javax.swing.JMenuBar;
+import javax.swing.JMenuItem;
+import javax.swing.WindowConstants;
+
+public class ScreenMenuMemoryLeakTest {
+
+    private static byte[] sBytes;
+
+    private static WeakReference<JMenuItem> sMenuItem;
+    private static JFrame sFrame;
+    private static JMenu sMenu;
+
+    public static void main(String[] args) throws InvocationTargetException, InterruptedException {
+        EventQueue.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                System.setProperty("apple.laf.useScreenMenuBar", "true");
+                showUI();
+            }
+        });
+
+        EventQueue.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                removeMenuItemFromMenu();
+            }
+        });
+        System.gc();
+        System.runFinalization();
+        JMenuItem menuItem = sMenuItem.get();
+        EventQueue.invokeAndWait(new Runnable() {
+            @Override
+            public void run() {
+                sFrame.dispose();
+            }
+        });
+        if (menuItem != null) {
+            throw new RuntimeException("The menu item should have been GC-ed");
+        }
+    }
+
+    private static void showUI() {
+        sFrame = new JFrame();
+        sFrame.add(new JLabel("Some dummy content"));
+
+        JMenuBar menuBar = new JMenuBar();
+
+        sMenu = new JMenu("Menu");
+        JMenuItem item = new JMenuItem("Item");
+        sMenu.add(item);
+
+        sMenuItem = new WeakReference<>(item);
+
+        menuBar.add(sMenu);
+
+        sFrame.setJMenuBar(menuBar);
+
+        sFrame.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
+        sFrame.pack();
+        sFrame.setVisible(true);
+    }
+
+    private static void removeMenuItemFromMenu() {
+        JMenuItem menuItem = sMenuItem.get();
+        Objects.requireNonNull(menuItem, "The menu item should still be available at this point");
+        sMenu.remove(menuItem);
+    }
+}