101 lines
3.8 KiB
Java
101 lines
3.8 KiB
Java
/*
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* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 6294683
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* @summary Test verifies that GIF ImageWriteParam behaves according to spec
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*/
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import javax.imageio.ImageIO;
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import javax.imageio.ImageWriteParam;
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import javax.imageio.ImageWriter;
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public class DisableCompressionTest {
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public static void main(String[] args) {
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testFormat("GIF");
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}
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protected static void testFormat(String format) {
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ImageWriter writer = ImageIO.getImageWritersByFormatName(format).next();
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if (writer == null) {
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throw new RuntimeException("No writer for " + format);
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}
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ImageWriteParam param = writer.getDefaultWriteParam();
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int[] supported_modes = new int[] {
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ImageWriteParam.MODE_COPY_FROM_METADATA,
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ImageWriteParam.MODE_DEFAULT,
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ImageWriteParam.MODE_EXPLICIT };
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for (int mode : supported_modes) {
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String mode_name = getModeName(mode);
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System.out.println("Test mode " + mode_name + "...");
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// we know that GIF image writer supports compression
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// and supports any compression mode form supportd_modes
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// If exception would be thrown here then test failed.
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param.setCompressionMode(mode);
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// now we are trying to disable compression.
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// This operation is not supported because GIF image writer
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// does not provide uncompressed output.
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// The expected behaviour is that UnsupportedOperationException
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// will be thrown here and current compression mode will not be
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// changed.
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boolean gotException = false;
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try {
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param.setCompressionMode(ImageWriteParam.MODE_DISABLED);
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} catch (UnsupportedOperationException e) {
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gotException = true;
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} catch (Throwable e) {
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throw new RuntimeException("Test failed due to unexpected exception", e);
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}
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if (!gotException) {
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throw new RuntimeException("Test failed.");
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}
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if (param.getCompressionMode() != mode) {
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throw new RuntimeException("Param state was changed.");
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}
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System.out.println("Test passed.");
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}
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}
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private static String getModeName(int mode) {
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switch(mode) {
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case ImageWriteParam.MODE_COPY_FROM_METADATA:
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return "MODE_COPY_FROM_METADATA";
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case ImageWriteParam.MODE_DEFAULT:
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return "MODE_DEFAULT";
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case ImageWriteParam.MODE_DISABLED:
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return "MODE_DISABLED";
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case ImageWriteParam.MODE_EXPLICIT:
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return "MODE_EXPLICIT";
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default:
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throw new IllegalArgumentException("Unknown mode: " + mode);
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}
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}
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}
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