1 /*
2 * Copyright (C) 2011, Robin Stocker <robin@nibor.org>
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
44 package org.eclipse.jgit.revwalk;
45
46 import static org.junit.Assert.assertEquals;
47
48 import org.junit.Test;
49
50 public class RevWalkUtilsCountTest extends RevWalkTestCase {
51
52 @Test
53 public void shouldWorkForNormalCase() throws Exception {
54 final RevCommit a = commit();
55 final RevCommit b = commit(a);
56
57 assertEquals(1, count(b, a));
58 }
59
60 @Test
61 public void shouldReturnZeroOnSameCommit() throws Exception {
62 final RevCommit c1 = commit(commit(commit()));
63 assertEquals(0, count(c1, c1));
64 }
65
66 @Test
67 public void shouldReturnZeroWhenMergedInto() throws Exception {
68 final RevCommit a = commit();
69 final RevCommit b = commit(a);
70
71 assertEquals(0, count(a, b));
72 }
73
74 @Test
75 public void shouldWorkWithMerges() throws Exception {
76 final RevCommit a = commit();
77 final RevCommit b1 = commit(a);
78 final RevCommit b2 = commit(a);
79 final RevCommit c = commit(b1, b2);
80
81 assertEquals(3, count(c, a));
82 }
83
84 @Test
85 public void shouldWorkWithoutCommonAncestor() throws Exception {
86 final RevCommit a1 = commit();
87 final RevCommit a2 = commit();
88 final RevCommit b = commit(a1);
89
90 assertEquals(2, count(b, a2));
91 }
92
93 @Test
94 public void shouldWorkWithZeroAsEnd() throws Exception {
95 final RevCommit c = commit(commit());
96
97 assertEquals(2, count(c, null));
98 }
99
100 private int count(RevCommit start, RevCommit end) throws Exception {
101 return RevWalkUtils.count(rw, start, end);
102 }
103 }