--- /dev/null 2013-08-30 15:36:23.000000000 +0400 +++ new/test/javax/imageio/plugins/wbmp/StreamResetTest.java 2013-08-30 15:36:22.563767300 +0400 @@ -0,0 +1,97 @@ +/* + * Copyright (c) 2013, 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 8022632 + * @summary Test verifies that SPI of WBMP image reader + * restores the stream position if an IOException + * occurs during processing of image header. + * @run main StreamResetTest + */ + + +import java.io.IOException; +import javax.imageio.ImageIO; +import javax.imageio.ImageReader; +import javax.imageio.spi.ImageReaderSpi; +import javax.imageio.stream.ImageInputStreamImpl; + +public class StreamResetTest { + + public static void main(String[] args) { + IOException expectedException = null; + TestStream iis = new TestStream(); + + ImageReader wbmp = ImageIO.getImageReadersByFormatName("WBMP").next(); + if (wbmp == null) { + System.out.println("No WBMP reader: skip the test"); + return; + } + + ImageReaderSpi spi = wbmp.getOriginatingProvider(); + + iis.checkPosition(); + + try { + spi.canDecodeInput(iis); + } catch (IOException e) { + expectedException = e; + } + + if (expectedException == null) { + throw new RuntimeException("Test FAILED: stream was not used"); + } + + iis.checkPosition(); + + System.out.println("Test PASSED"); + + } + + private static class TestStream extends ImageInputStreamImpl { + private final int errorPos = 1; + + @Override + public int read() throws IOException { + if (streamPos == errorPos) { + throw new IOException("Test exception"); + } + streamPos++; + + return 0x03; + } + + @Override + public int read(byte[] b, int off, int len) throws IOException { + streamPos += len; + return len; + } + + public void checkPosition() { + if (streamPos != 0) { + throw new RuntimeException("Test FAILED"); + } + } + } +}