| /* |
| * Copyright (c) 2011, 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. |
| */ |
| |
| import javax.swing.*; |
| import java.awt.*; |
| import java.awt.image.BufferedImage; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| /** |
| * <p>This class contains utilities useful for regression testing. |
| * <p>When using jtreg you would include this class via something like: |
| * <pre> |
| * |
| * @library ../../regtesthelpers |
| * @build Util |
| * </pre> |
| */ |
| |
| public class Util { |
| /** |
| * Convert a rectangle from coordinate system of Component c to |
| * screen coordinate system. |
| * |
| * @param r a non-null Rectangle |
| * @param c a Component whose coordinate system is used for conversion |
| */ |
| public static void convertRectToScreen(Rectangle r, Component c) { |
| Point p = new Point(r.x, r.y); |
| SwingUtilities.convertPointToScreen(p, c); |
| r.x = p.x; |
| r.y = p.y; |
| } |
| |
| /** |
| * Compares two bufferedImages pixel-by-pixel. |
| * return true if all pixels in the two areas are identical |
| */ |
| public static boolean compareBufferedImages(BufferedImage bufferedImage0, BufferedImage bufferedImage1) { |
| int width = bufferedImage0.getWidth(); |
| int height = bufferedImage0.getHeight(); |
| |
| if (width != bufferedImage1.getWidth() || height != bufferedImage1.getHeight()) { |
| return false; |
| } |
| |
| for (int y = 0; y < height; y++) { |
| for (int x = 0; x < width; x++) { |
| if (bufferedImage0.getRGB(x, y) != bufferedImage1.getRGB(x, y)) { |
| return false; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| /** |
| * Fills the heap until OutOfMemoryError occurs. This method is useful for |
| * WeakReferences removing. |
| */ |
| public static void generateOOME() { |
| List<Object> bigLeak = new LinkedList<Object>(); |
| |
| boolean oome = false; |
| |
| System.out.print("Filling the heap"); |
| |
| try { |
| for(int i = 0; true ; i++) { |
| // Now, use up all RAM |
| bigLeak.add(new byte[1024 * 1024]); |
| |
| System.out.print("."); |
| |
| // Give the GC a change at that weakref |
| if (i % 10 == 0) { |
| System.gc(); |
| try { |
| Thread.sleep(100); |
| } catch (InterruptedException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| } catch (OutOfMemoryError e) { |
| bigLeak = null; |
| oome = true; |
| } |
| |
| System.out.println(""); |
| |
| if (!oome) { |
| throw new RuntimeException("Problem with test case - never got OOME"); |
| } |
| |
| System.out.println("Got OOME"); |
| } |
| |
| /** |
| * Find a sub component by class name. |
| * Always run this method on the EDT thread |
| */ |
| public static Component findSubComponent(Component parent, String className) { |
| String parentClassName = parent.getClass().getName(); |
| |
| if (parentClassName.contains(className)) { |
| return parent; |
| } |
| |
| if (parent instanceof Container) { |
| for (Component child : ((Container) parent).getComponents()) { |
| Component subComponent = findSubComponent(child, className); |
| |
| if (subComponent != null) { |
| return subComponent; |
| } |
| } |
| } |
| |
| return null; |
| } |
| } |