/*

 * Copyright 2004 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/* @test

 * @bug 5041041

 * @summary Test BufferedInputStream read of zero byte array

 */

import java.io.*;

/**

 * This class tests to see if BufferedInputStream of zero length array

 * invokes the read method or not. Invoking read could block which is

 * incompatible behavior for zero length array.

 */

public class ReadZeroBytes {

    public static void main( String argv[] ) throws Exception {

        BufferedInputStream in = new BufferedInputStream(

            new ThrowingInputStream());

        in.read(new byte[0], 0, 0);

    }

}

class ThrowingInputStream extends InputStream {

    public ThrowingInputStream() {

    }

    public int read() throws IOException {

        return 0;

    }

    public int read(byte[] b, int off, int len) throws IOException {

        throw new RuntimeException("Read invoked for len == 0");

    }

}