102 lines
4.3 KiB
Java
102 lines
4.3 KiB
Java
/*
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* Copyright (c) 2018, 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 4954348
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* @summary Checks whether JpegImageWriter returns -1 as recommended by the
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* specification when getNumThumbnailsSupported method is invoked
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* with insufficient data.
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* @run main JpegNumThumbnailsTest
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*/
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import javax.imageio.ImageIO;
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import javax.imageio.ImageTypeSpecifier;
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import javax.imageio.ImageWriter;
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import javax.imageio.metadata.IIOMetadata;
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import java.awt.image.BufferedImage;
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import java.util.Iterator;
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import static java.awt.image.BufferedImage.TYPE_INT_RGB;
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public class JpegNumThumbnailsTest {
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public static void main(String args[]) {
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// Test variables.
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Iterator<ImageWriter> iterWriter = null;
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ImageWriter jpgWriter = null;
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IIOMetadata imgMetadata = null;
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BufferedImage testImage = null;
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ImageTypeSpecifier imgType = null;
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int numThumbnails = 0;
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iterWriter = ImageIO.getImageWritersByFormatName("JPEG");
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if (iterWriter.hasNext()) {
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try {
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// JpegImageWriter requires either image type or image metadata
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// to determine the number of thumbnails that could be
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// supported. Hence we test for all possible input combinations
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// and observe the result.
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jpgWriter = iterWriter.next();
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testImage = new BufferedImage(32, 32, TYPE_INT_RGB);
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imgType = ImageTypeSpecifier.createFromRenderedImage(testImage);
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imgMetadata = jpgWriter.getDefaultImageMetadata(imgType, null);
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// Observe the result with insufficient data.
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numThumbnails = jpgWriter.getNumThumbnailsSupported(null,
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null, null, null);
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if (numThumbnails != -1) {
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reportException("Incorrect number of thumbnails returned.");
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}
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// Observe the result with valid image type.
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numThumbnails = jpgWriter.getNumThumbnailsSupported(imgType,
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null, null, null);
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if (numThumbnails != Integer.MAX_VALUE) {
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reportException("Incorrect number of thumbnails returned.");
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}
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// Observe the result with valid image metadata.
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numThumbnails = jpgWriter.getNumThumbnailsSupported(null,
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null, null, imgMetadata);
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if (numThumbnails != Integer.MAX_VALUE) {
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reportException("Incorrect number of thumbnails returned.");
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}
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// Observe the result with valid image type and metadata.
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numThumbnails = jpgWriter.getNumThumbnailsSupported(imgType,
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null, null, imgMetadata);
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if (numThumbnails != Integer.MAX_VALUE) {
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reportException("Incorrect number of thumbnails returned.");
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}
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} finally {
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// Dispose the writer
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jpgWriter.dispose();
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}
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}
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}
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private static void reportException(String message) {
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// Report a runtime exception with the required message.
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throw new RuntimeException("Test Failed. " + message);
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}
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}
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