1 /*
   2  * Copyright (c) 2017, 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  * @test
  26  * @key headful
  27  * @bug 8176490
  28  * @summary Tests that there is no hang or deadlock when the visibility
  29  *      of parent and child windows is changed.
  30  * @library ../../regtesthelpers
  31  * @build Util
  32  * @run main/timeout=20 WindowDeadlockTest
  33  */
  34 
  35 import java.awt.Dialog;
  36 import java.awt.Frame;
  37 import java.awt.Robot;
  38 
  39 import test.java.awt.regtesthelpers.Util;
  40 
  41 public class WindowDeadlockTest {
  42     public static void main(String[] args) throws Exception {
  43         Robot robot = Util.createRobot();
  44 
  45         Frame main = new Frame("Main");
  46         main.setBounds(0, 0, 200, 100);
  47         main.setVisible(true);
  48 
  49         Dialog first = new Dialog(main, "First");
  50         first.setBounds(250, 0, 200, 100);
  51         first.setVisible(true);
  52 
  53         Dialog second = new Dialog(first, "Second");
  54         second.setBounds(0, 150, 200, 100);
  55         second.setVisible(true);
  56 
  57         Util.waitForIdle(robot);
  58         robot.delay(2000);
  59 
  60         Dialog third = new Dialog(first, "Third", false);
  61         third.setBounds(250, 150, 200, 100);
  62         third.setVisible(true);
  63         first.setVisible(false); // the hang takes place here
  64 
  65         Util.waitForIdle(robot);
  66         robot.delay(2000);
  67 
  68         third.dispose();
  69         second.dispose();
  70         first.dispose();
  71         main.dispose();
  72     }
  73 }