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1   /*
2    * Copyright (C) 2011, Tomasz Zarna <Tomasz.Zarna@pl.ibm.com>
3    * and other copyright owners as documented in the project's IP log.
4    *
5    * This program and the accompanying materials are made available
6    * under the terms of the Eclipse Distribution License v1.0 which
7    * accompanies this distribution, is reproduced below, and is
8    * available at http://www.eclipse.org/org/documents/edl-v10.php
9    *
10   * All rights reserved.
11   *
12   * Redistribution and use in source and binary forms, with or
13   * without modification, are permitted provided that the following
14   * conditions are met:
15   *
16   * - Redistributions of source code must retain the above copyright
17   *   notice, this list of conditions and the following disclaimer.
18   *
19   * - Redistributions in binary form must reproduce the above
20   *   copyright notice, this list of conditions and the following
21   *   disclaimer in the documentation and/or other materials provided
22   *   with the distribution.
23   *
24   * - Neither the name of the Eclipse Foundation, Inc. nor the
25   *   names of its contributors may be used to endorse or promote
26   *   products derived from this software without specific prior
27   *   written permission.
28   *
29   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30   * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36   * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41   * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42   */
43  package org.eclipse.jgit.revwalk;
44  
45  import static org.junit.Assert.assertNull;
46  
47  import org.eclipse.jgit.revwalk.filter.SkipRevFilter;
48  import org.junit.Test;
49  
50  public class SkipRevFilterTest extends RevWalkTestCase {
51  	@Test
52  	public void testSkipRevFilter() throws Exception {
53  		final RevCommit a = commit();
54  		final RevCommit b1 = commit(a);
55  		final RevCommit b2 = commit(a);
56  		final RevCommit c = commit(b1, b2);
57  		final RevCommit d = commit(c);
58  
59  		rw.reset();
60  		rw.setRevFilter(SkipRevFilter.create(3));
61  		markStart(d);
62  		assertCommit(b1, rw.next());
63  		assertCommit(a, rw.next());
64  		assertNull(rw.next());
65  	}
66  
67  	@Test
68  	public void testSkipRevFilter0() throws Exception {
69  		final RevCommit a = commit();
70  		final RevCommit b = commit(a);
71  
72  		rw.reset();
73  		rw.setRevFilter(SkipRevFilter.create(0));
74  		markStart(b);
75  		assertCommit(b, rw.next());
76  		assertCommit(a, rw.next());
77  		assertNull(rw.next());
78  	}
79  
80  	@Test(expected = IllegalArgumentException.class)
81  	public void testSkipRevFilterNegative() throws Exception {
82  		SkipRevFilter.create(-1);
83  	}
84  }