| /* |
| * Copyright (c) 2016, 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. |
| */ |
| |
| /** |
| * @test |
| * @bug 8044289 |
| * @summary Test verifies that when some of the read() and write() methods |
| * are not able to get stream from createImageInputStream() and |
| * createImageOutputStream() are we doing null check for stream |
| * and throwing IOException as per specification. |
| * @run main NullStreamCheckTest |
| */ |
| |
| import java.awt.image.BufferedImage; |
| import java.io.File; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import javax.imageio.ImageIO; |
| import javax.imageio.spi.IIORegistry; |
| import javax.imageio.spi.ImageInputStreamSpi; |
| import javax.imageio.spi.ImageOutputStreamSpi; |
| |
| public class NullStreamCheckTest { |
| |
| // get ImageIORegistry default instance. |
| private static final IIORegistry localRegistry = IIORegistry. |
| getDefaultInstance(); |
| // stream variables needed for input and output. |
| static LocalOutputStream outputStream = new LocalOutputStream(); |
| static LocalInputStream inputStream = new LocalInputStream(); |
| |
| static final int width = 50, height = 50; |
| |
| // input and output BufferedImage needed while read and write. |
| static BufferedImage inputImage = new BufferedImage(width, height, |
| BufferedImage.TYPE_INT_ARGB); |
| |
| // creates test file needed for read and write in local directory. |
| private static File createTestFile(String name) throws IOException { |
| String sep = System.getProperty("file.separator"); |
| String dir = System.getProperty("test.src", "."); |
| String filePath = dir+sep; |
| File directory = new File(filePath); |
| File tmpTestFile = File.createTempFile(name, ".png", directory); |
| directory.delete(); |
| return tmpTestFile; |
| } |
| |
| /* if we catch expected IOException message return |
| * false otherwise return true. |
| */ |
| private static boolean verifyOutputExceptionMessage(IOException ex) { |
| String message = ex.getMessage(); |
| return (!message.equals("Can't create an ImageOutputStream!")); |
| } |
| |
| /* if we catch expected IOException message return |
| * false otherwise return true. |
| */ |
| private static boolean verifyInputExceptionMessage(IOException ex) { |
| String message = ex.getMessage(); |
| return (!message.equals("Can't create an ImageInputStream!")); |
| } |
| |
| private static void verifyFileWrite() throws IOException { |
| File outputTestFile = createTestFile("outputTestFile"); |
| try { |
| ImageIO.write(inputImage, "png", outputTestFile); |
| } catch (IOException ex) { |
| if (verifyOutputExceptionMessage(ex)) |
| throw ex; |
| } finally { |
| outputTestFile.delete(); |
| } |
| } |
| |
| private static void verifyStreamWrite() throws IOException { |
| try { |
| ImageIO.write(inputImage, "png", outputStream); |
| } catch (IOException ex) { |
| if (verifyOutputExceptionMessage(ex)) |
| throw ex; |
| } finally { |
| try { |
| outputStream.close(); |
| } catch (IOException ex) { |
| throw ex; |
| } |
| } |
| } |
| |
| private static void verifyFileRead() throws IOException { |
| File inputTestFile = createTestFile("inputTestFile"); |
| try { |
| ImageIO.read(inputTestFile); |
| } catch (IOException ex) { |
| if (verifyInputExceptionMessage(ex)) |
| throw ex; |
| } finally { |
| inputTestFile.delete(); |
| } |
| } |
| |
| private static void verifyStreamRead() throws IOException { |
| try { |
| ImageIO.read(inputStream); |
| } catch (IOException ex) { |
| if (verifyInputExceptionMessage(ex)) |
| throw ex; |
| } finally { |
| try { |
| inputStream.close(); |
| } catch (IOException ex) { |
| throw ex; |
| } |
| } |
| } |
| |
| private static void verifyUrlRead() throws IOException { |
| URL url; |
| File inputTestUrlFile = createTestFile("inputTestFile"); |
| try { |
| try { |
| url = inputTestUrlFile.toURI().toURL(); |
| } catch (MalformedURLException ex) { |
| throw ex; |
| } |
| |
| try { |
| ImageIO.read(url); |
| } catch (IOException ex) { |
| if (verifyInputExceptionMessage(ex)) |
| throw ex; |
| } |
| } finally { |
| inputTestUrlFile.delete(); |
| } |
| } |
| |
| public static void main(String[] args) throws IOException, |
| MalformedURLException { |
| |
| /* deregister ImageOutputStreamSpi so that we creatImageOutputStream |
| * returns null while writing. |
| */ |
| localRegistry.deregisterAll(ImageOutputStreamSpi.class); |
| /* verify possible ImageIO.write() scenario's for null stream output |
| * from createImageOutputStream() API in ImageIO class. |
| */ |
| verifyFileWrite(); |
| verifyStreamWrite(); |
| |
| /* deregister ImageInputStreamSpi so that we creatImageInputStream |
| * returns null while reading. |
| */ |
| localRegistry.deregisterAll(ImageInputStreamSpi.class); |
| /* verify possible ImageIO.read() scenario's for null stream output |
| * from createImageInputStream API in ImageIO class. |
| */ |
| verifyFileRead(); |
| verifyStreamRead(); |
| verifyUrlRead(); |
| } |
| |
| static class LocalOutputStream extends OutputStream { |
| |
| @Override |
| public void write(int i) throws IOException { |
| } |
| } |
| |
| static class LocalInputStream extends InputStream { |
| |
| @Override |
| public int read() throws IOException { |
| return 0; |
| } |
| } |
| } |