1 /* 2 * Copyright (c) 2015, 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 import java.io.File; 25 import java.io.FileOutputStream; 26 import java.util.Iterator; 27 import java.nio.file.Files; 28 29 import javax.imageio.ImageIO; 30 import javax.imageio.ImageWriter; 31 import javax.imageio.metadata.IIOMetadata; 32 import javax.imageio.spi.IIORegistry; 33 import javax.imageio.spi.ImageWriterSpi; 34 import javax.imageio.stream.ImageOutputStream; 35 36 /** 37 * @test 38 * @bug 4958064 8183349 39 * @summary Test verifies that when we try to forcefully run 40 * prepareWriteSequence() where it is not supported 41 * will ImageIO throws an UnsupportedOperationException 42 * or not. 43 * @run main/manual CanWriteSequence 44 */ 45 public final class CanWriteSequence { 46 47 public static void main(final String[] args) throws Exception { 48 final IIORegistry registry = IIORegistry.getDefaultInstance(); 49 final Iterator<ImageWriterSpi> iter = 50 registry.getServiceProviders(ImageWriterSpi.class, 51 provider -> true, true); 52 // Validates all supported ImageWriters 53 while (iter.hasNext()) { 54 final ImageWriter writer = iter.next().createWriterInstance(); 55 System.out.println("ImageWriter = " + writer); 56 test(writer); 57 } 58 System.out.println("Test passed"); 59 } 60 61 private static void test(final ImageWriter writer) throws Exception { 62 String sep = System.getProperty("file.separator"); 63 String dir = System.getProperty("test.src", "."); 64 String filePath = dir+sep; 65 File directory = new File(filePath); 66 final File file = File.createTempFile("temp", ".img", directory); 67 directory.delete(); 68 final FileOutputStream fos = new FileOutputStream(file); 69 final ImageOutputStream ios = ImageIO.createImageOutputStream(fos); 70 writer.setOutput(ios); 71 final IIOMetadata data = writer.getDefaultStreamMetadata(null); 72 73 if (writer.canWriteSequence()) { 74 writer.prepareWriteSequence(data); 75 } else { 76 try { 77 writer.prepareWriteSequence(data); 78 Files.delete(file.toPath()); 79 throw new RuntimeException( 80 "UnsupportedOperationException was not thrown"); 81 } catch (final UnsupportedOperationException ignored) { 82 // expected 83 } 84 } 85 writer.dispose(); 86 fos.close(); 87 Files.delete(file.toPath()); 88 } 89 } 90