1 /* 2 * Copyright (c) 2005, 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 * @bug 6275251 27 * @summary Verifies that GIF image writer throws IllegalStateException if 28 * assigned output stream was cleared by reset() method 29 */ 30 31 import java.awt.Color; 32 import java.awt.Graphics2D; 33 import java.awt.image.BufferedImage; 34 import java.io.ByteArrayOutputStream; 35 import java.io.IOException; 36 37 import javax.imageio.ImageIO; 38 import javax.imageio.ImageWriter; 39 import javax.imageio.stream.ImageOutputStream; 40 41 public class WriterResetTest { 42 public static void main(String[] args) throws IOException { 43 ImageWriter w = ImageIO.getImageWritersByFormatName("GIF").next(); 44 if (w == null) { 45 throw new RuntimeException("No writers available!"); 46 } 47 48 ByteArrayOutputStream baos = 49 new ByteArrayOutputStream(); 50 51 ImageOutputStream ios = 52 ImageIO.createImageOutputStream(baos); 53 54 w.setOutput(ios); 55 56 BufferedImage img = createTestImage(); 57 58 try { 59 w.reset(); 60 w.write(img); 61 } catch (IllegalStateException e) { 62 System.out.println("Test passed"); 63 } catch (Throwable e) { 64 throw new RuntimeException("Test failed", e); 65 } 66 } 67 68 private static BufferedImage createTestImage() { 69 BufferedImage img = new BufferedImage(100, 100, 70 BufferedImage.TYPE_INT_RGB); 71 Graphics2D g = img.createGraphics(); 72 g.setColor(Color.white); 73 g.fillRect(0, 0, 100, 100); 74 g.setColor(Color.black); 75 g.fillRect(20, 20, 60, 60); 76 77 return img; 78 } 79 }