1/*
2 * Copyright (c) 2013, 2016, 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 8007146
28 * @summary [macosx] Setting a display mode crashes JDK under VNC
29 * @author Alexander Scherbatiy
30 * @run main CheckDisplayModes
31 */
32import java.awt.DisplayMode;
33import java.awt.GraphicsDevice;
34import java.awt.GraphicsEnvironment;
35
36public class CheckDisplayModes {
37
38    public static void main(String[] args) {
39        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
40        GraphicsDevice graphicDevice = ge.getDefaultScreenDevice();
41        if (!graphicDevice.isDisplayChangeSupported()) {
42            System.err.println("Display mode change is not supported on this host. Test is considered passed.");
43            return;
44        }
45        DisplayMode defaultDisplayMode = graphicDevice.getDisplayMode();
46        checkDisplayMode(defaultDisplayMode);
47        graphicDevice.setDisplayMode(defaultDisplayMode);
48
49        DisplayMode[] displayModes = graphicDevice.getDisplayModes();
50        boolean isDefaultDisplayModeIncluded = false;
51        for (DisplayMode displayMode : displayModes) {
52            checkDisplayMode(displayMode);
53            graphicDevice.setDisplayMode(displayMode);
54            if (defaultDisplayMode.equals(displayMode)) {
55                isDefaultDisplayModeIncluded = true;
56            }
57        }
58
59        if (!isDefaultDisplayModeIncluded) {
60            throw new RuntimeException("Default display mode is not included");
61        }
62    }
63
64    static void checkDisplayMode(DisplayMode displayMode) {
65        if (displayMode == null || displayMode.getWidth() <= 1 || displayMode.getHeight() <= 1) {
66            throw new RuntimeException("invalid display mode");
67        }
68    }
69}
70