| /* |
| * Copyright (c) 2003, 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. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* @test |
| * @bug 4175312 |
| * @summary Test StringReader.skip with negative param |
| */ |
| |
| import java.io.*; |
| |
| public class Skip { |
| public static void main( String argv[] ) throws Exception { |
| StringReader in = new StringReader("1234567"); |
| |
| // Skip forward and read |
| if (in.skip(3) != 3) |
| throw new RuntimeException("skip(3) failed"); |
| if (in.read() != '4') |
| throw new RuntimeException("post skip read failure"); |
| |
| // Skip backward and read |
| if (in.skip(-2) != -2) |
| throw new RuntimeException("skip(-2) failed"); |
| if (in.read() != '3') |
| throw new RuntimeException("read failed after negative skip"); |
| |
| // Attempt to skip backward past the beginning and read |
| if (in.skip(-6) != -3) |
| throw new RuntimeException("skip(-6) failed"); |
| if (in.read() != '1') |
| throw new RuntimeException("read after skip past beginning failed"); |
| |
| // Skip beyond the end |
| if (in.skip(30) != 6) |
| throw new RuntimeException("skip(30) failed"); |
| if (in.read() != -1) |
| throw new RuntimeException("read at EOF failed"); |
| |
| // Test after reaching end of string |
| if (in.skip(30) != 0) |
| throw new RuntimeException("skip(30) failed"); |
| if (in.skip(-30) != 0) |
| throw new RuntimeException("skip(30) failed"); |
| } |
| } |