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/*
* Copyright (c) 2003, 2017, 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 4892609
* @summary Tests that the appropriate IllegalStateException is thrown if
* ImageReader.getNumImages() is called with a null source or if
* allowSearch is specified at the same time that seekForwardOnly is
* true
*/
import java.io.ByteArrayInputStream;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.spi.IIORegistry;
import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.stream.ImageInputStream;
public class GetNumImages {
public static void main(String[] args) throws Exception {
IIORegistry registry = IIORegistry.getDefaultInstance();
// test ImageReader.getNumImages() for all available ImageReaders,
// with no source set
Iterator readerspis = registry.getServiceProviders(ImageReaderSpi.class,
false);
while (readerspis.hasNext()) {
boolean caughtEx = false;
ImageReaderSpi readerspi = (ImageReaderSpi)readerspis.next();
ImageReader reader = readerspi.createReaderInstance();
try {
reader.getNumImages(false);
} catch (IllegalStateException ise) {
// caught exception, everything's okay
caughtEx = true;
}
if (!caughtEx) {
throw new RuntimeException("Test failed: exception was not " +
"thrown for null input: " +
reader);
}
}
// test ImageReader.getNumImages() for all available ImageReaders,
// with source set, seekForwardOnly and allowSearch both true
readerspis = registry.getServiceProviders(ImageReaderSpi.class,
false);
while (readerspis.hasNext()) {
boolean caughtEx = false;
ImageReaderSpi readerspi = (ImageReaderSpi)readerspis.next();
ImageReader reader = readerspi.createReaderInstance();
byte[] barr = new byte[100];
ByteArrayInputStream bais = new ByteArrayInputStream(barr);
ImageInputStream iis = ImageIO.createImageInputStream(bais);
try {
reader.setInput(iis, true);
reader.getNumImages(true);
} catch (IllegalStateException ise) {
// caught exception, everything's okay
caughtEx = true;
}
if (!caughtEx) {
throw new RuntimeException("Test failed: exception was not " +
"thrown when allowSearch and " +
"seekForwardOnly are both true: " +
reader);
}
}
}
}
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