1 /*
   2  * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 
  25 /*
  26   test
  27   @bug 4051487 4145670 8062021
  28   @summary Tests that disposing of an empty Frame or a Frame with a MenuBar
  29            while it is being created does not crash the VM.
  30   @author dpm area=Threads
  31   @run applet/timeout=7200 DisposeStressTest.html
  32 */
  33 
  34 // Note there is no @ in front of test above.  This is so that the
  35 //  harness will not mistake this file as a test file.  It should
  36 //  only see the html file as a test file. (the harness runs all
  37 //  valid test files, so it would run this test twice if this file
  38 //  were valid as well as the html file.)
  39 // Also, note the area= after Your Name in the author tag.  Here, you
  40 //  should put which functional area the test falls in.  See the
  41 //  AWT-core home page -> test areas and/or -> AWT team  for a list of
  42 //  areas.
  43 // Note also the 'DisposeStressTest.html' in the run tag.  This should
  44 //  be changed to the name of the test.
  45 
  46 
  47 /**
  48  * DisposeStressTest.java
  49  *
  50  * summary:
  51  */
  52 
  53 import java.applet.Applet;
  54 import java.awt.*;
  55 
  56 
  57 //Automated tests should run as applet tests if possible because they
  58 // get their environments cleaned up, including AWT threads, any
  59 // test created threads, and any system resources used by the test
  60 // such as file descriptors.  (This is normally not a problem as
  61 // main tests usually run in a separate VM, however on some platforms
  62 // such as the Mac, separate VMs are not possible and non-applet
  63 // tests will cause problems).  Also, you don't have to worry about
  64 // synchronisation stuff in Applet tests they way you do in main
  65 // tests...
  66 
  67 
  68 public class DisposeStressTest extends Applet
  69  {
  70    //Declare things used in the test, like buttons and labels here
  71 
  72    public void init()
  73     {
  74       //Create instructions for the user here, as well as set up
  75       // the environment -- set the layout manager, add buttons,
  76       // etc.
  77 
  78       this.setLayout (new BorderLayout ());
  79 
  80 
  81     }//End  init()
  82 
  83    public void start ()
  84     {
  85         for (int i = 0; i < 1000; i++) {
  86             Frame f = new Frame();
  87             f.setBounds(10, 10, 10, 10);
  88             f.show();
  89             f.dispose();
  90 
  91             Frame f2 = new Frame();
  92             f2.setBounds(10, 10, 100, 100);
  93             MenuBar bar = new MenuBar();
  94             Menu menu = new Menu();
  95             menu.add(new MenuItem("foo"));
  96             bar.add(menu);
  97             f2.setMenuBar(bar);
  98             f2.show();
  99             f2.dispose();
 100         }
 101     }// start()
 102 
 103  }// class DisposeStressTest