0N/A/*
2362N/A * Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A/* @test
0N/A @bug 4085938
0N/A @summary Check for the correct behaviour of DataInputStream.skipBytes
0N/A */
0N/A
0N/Aimport java.io.*;
0N/A
0N/Apublic class SkipBytes{
0N/A
0N/A private static void dotest(DataInputStream dis, int pos, int total,
0N/A int toskip, int expected) {
0N/A
0N/A try {
0N/A System.err.println("\n\nTotal bytes in the stream = " + total);
0N/A System.err.println("Currently at position = " + pos);
0N/A System.err.println("Bytes to skip = " + toskip);
0N/A System.err.println("Expected result = " + expected);
0N/A int skipped = dis.skipBytes(toskip);
0N/A System.err.println("Actual skipped = " + skipped);
0N/A if (skipped != expected) {
0N/A throw new RuntimeException
0N/A ("DataInputStream.skipBytes does not return expected value");
0N/A }
0N/A } catch(EOFException e){
0N/A throw new RuntimeException
0N/A ("DataInputStream.skipBytes throws unexpected EOFException");
0N/A } catch (IOException e) {
0N/A System.err.println("IOException is thrown - possible result");
0N/A }
0N/A
0N/A
0N/A }
0N/A
0N/A
0N/A
0N/A public static void main(String args[]) throws Exception {
0N/A
0N/A DataInputStream dis = new DataInputStream(new MyInputStream());
0N/A dotest(dis, 0, 11, -1, 0);
0N/A dotest(dis, 0, 11, 5, 5);
0N/A System.err.println("\n***CAUTION**** - may go into an infinite loop");
0N/A dotest(dis, 5, 11, 20, 6);
0N/A }
0N/A}
0N/A
0N/A
0N/Aclass MyInputStream extends InputStream {
0N/A
0N/A private int readctr = 0;
0N/A
0N/A public int read() {
0N/A
0N/A if (readctr > 10){
0N/A return -1;
0N/A }
0N/A else{
0N/A readctr++;
0N/A return 0;
0N/A }
0N/A
0N/A }
0N/A
0N/A public int available() { return 0; }
0N/A}