test/jdk/javax/imageio/stream/ReadBytesIIOByteBuffer.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is free software; you can redistribute it and/or modify it
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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/*
 * @test
 * @bug 4446906
 * @summary Checks if ImageInputStreamImpl.readBytes(IIOByteBuffer) tests for
 *          len < 0
 */

import java.io.ByteArrayInputStream;
import java.io.InputStream;

import javax.imageio.stream.IIOByteBuffer;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.MemoryCacheImageInputStream;

public class ReadBytesIIOByteBuffer {

    public static void main(String[] argv) {
        byte[] bar = {1, 1, 1};
        InputStream is = new ByteArrayInputStream(bar);

        ImageInputStream iis = new MemoryCacheImageInputStream(is);
        byte[] b = new byte[10];
        IIOByteBuffer iiob = new IIOByteBuffer(b, 0, b.length);
        try {
            iis.readBytes(iiob, -1);
        } catch (IndexOutOfBoundsException e) {
            return;
        } catch (Exception e) {
            throw new RuntimeException("Unexpected exception: " + e);
        }
        throw new RuntimeException("No exception thrown for len < 0!");
    }
}