jdk-24/jdk/test/java/io/DataInputStream/ReadFully.java

/*
 * Copyright (c) 1999, 2010, 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.
 *
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 * questions.
 */

/* @test
 * @bug 4214513
 * @summary Passing a negative length argument for readFully must throw
 *          IndexOutOfBoundsException.
 */


import java.io.*;
public class ReadFully {
    public static final void main(String[] args) throws Exception {
        byte[] buffer = new byte[100];
        File file = new File(System.getProperty("test.src"),
                "ReadFully.java");
        FileInputStream in = new FileInputStream(file);
        DataInputStream dis = new DataInputStream(in);

        boolean caughtException = false;
        try {
            dis.readFully(buffer, 0, -20);
        } catch (IndexOutOfBoundsException ie) {
            caughtException = true;
        } finally {
            dis.close();
            if (!caughtException)
                throw new RuntimeException("Test failed");
        }
    }
}