97 lines
3.9 KiB
Java
97 lines
3.9 KiB
Java
/*
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* Copyright (c) 2003, 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 4892609
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* @summary Tests that the appropriate IllegalStateException is thrown if
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* ImageReader.getNumImages() is called with a null source or if
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* allowSearch is specified at the same time that seekForwardOnly is
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* true
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*/
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import java.io.ByteArrayInputStream;
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import java.util.Iterator;
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import javax.imageio.ImageIO;
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import javax.imageio.ImageReader;
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import javax.imageio.spi.IIORegistry;
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import javax.imageio.spi.ImageReaderSpi;
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import javax.imageio.stream.ImageInputStream;
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public class GetNumImages {
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public static void main(String[] args) throws Exception {
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IIORegistry registry = IIORegistry.getDefaultInstance();
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// test ImageReader.getNumImages() for all available ImageReaders,
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// with no source set
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Iterator readerspis = registry.getServiceProviders(ImageReaderSpi.class,
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false);
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while (readerspis.hasNext()) {
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boolean caughtEx = false;
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ImageReaderSpi readerspi = (ImageReaderSpi)readerspis.next();
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ImageReader reader = readerspi.createReaderInstance();
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try {
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reader.getNumImages(false);
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} catch (IllegalStateException ise) {
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// caught exception, everything's okay
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caughtEx = true;
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}
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if (!caughtEx) {
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throw new RuntimeException("Test failed: exception was not " +
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"thrown for null input: " +
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reader);
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}
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}
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// test ImageReader.getNumImages() for all available ImageReaders,
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// with source set, seekForwardOnly and allowSearch both true
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readerspis = registry.getServiceProviders(ImageReaderSpi.class,
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false);
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while (readerspis.hasNext()) {
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boolean caughtEx = false;
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ImageReaderSpi readerspi = (ImageReaderSpi)readerspis.next();
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ImageReader reader = readerspi.createReaderInstance();
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byte[] barr = new byte[100];
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ByteArrayInputStream bais = new ByteArrayInputStream(barr);
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ImageInputStream iis = ImageIO.createImageInputStream(bais);
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try {
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reader.setInput(iis, true);
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reader.getNumImages(true);
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} catch (IllegalStateException ise) {
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// caught exception, everything's okay
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caughtEx = true;
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}
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if (!caughtEx) {
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throw new RuntimeException("Test failed: exception was not " +
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"thrown when allowSearch and " +
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"seekForwardOnly are both true: " +
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reader);
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}
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}
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}
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}
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