70 lines
2.2 KiB
Java
70 lines
2.2 KiB
Java
/*
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* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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* @bug 4398210
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* @summary check skip method after pushing data back
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*
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*/
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import java.io.*;
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public class Skip {
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public static void main(String args[]) throws Exception {
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test1();
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}
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private static void test1() throws Exception {
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char[] buf = new char[20];
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for (int i=0; i<20; i++)
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buf[i] = (char)i;
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CharArrayReader car = new CharArrayReader(buf);
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PushbackReader pr = new PushbackReader(car, 10);
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check(pr.read(), 0);
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// Check skip without unread chars present
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pr.skip(1);
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check(pr.read(), 2);
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pr.unread(2);
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pr.unread(1);
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// Check skip over and beyond unread chars
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pr.skip(4);
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check(pr.read(), 5);
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check(pr.read(), 6);
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pr.unread(6);
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pr.unread(5);
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// Check skip within unread chars
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pr.skip(1);
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check(pr.read(), 6);
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check(pr.read(), 7);
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// Check skip after unread chars have been used
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pr.skip(3);
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check(pr.read(), 11);
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}
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private static void check (int i, int j) {
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if (i != j)
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throw new RuntimeException("Test failed");
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}
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}
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