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1   /*
2    * Copyright (C) 2010, Sasa Zivkov <sasa.zivkov@sap.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  
44  package org.eclipse.jgit.notes;
45  
46  import static org.junit.Assert.assertEquals;
47  import static org.junit.Assert.assertNull;
48  import static org.junit.Assert.assertSame;
49  
50  import org.eclipse.jgit.junit.RepositoryTestCase;
51  import org.eclipse.jgit.junit.TestRepository;
52  import org.eclipse.jgit.lib.ObjectInserter;
53  import org.eclipse.jgit.lib.ObjectReader;
54  import org.eclipse.jgit.lib.Repository;
55  import org.eclipse.jgit.revwalk.RevBlob;
56  import org.junit.After;
57  import org.junit.Before;
58  import org.junit.Test;
59  
60  public class DefaultNoteMergerTest extends RepositoryTestCase {
61  
62  	private TestRepository<Repository> tr;
63  
64  	private ObjectReader reader;
65  
66  	private ObjectInserter inserter;
67  
68  	private DefaultNoteMerger merger;
69  
70  	private Note baseNote;
71  
72  	private RevBlob noteOn;
73  
74  	@Override
75  	@Before
76  	public void setUp() throws Exception {
77  		super.setUp();
78  		tr = new TestRepository<Repository>(db);
79  		reader = db.newObjectReader();
80  		inserter = db.newObjectInserter();
81  		merger = new DefaultNoteMerger();
82  		noteOn = tr.blob("a");
83  		baseNote = newNote("data");
84  	}
85  
86  	@Override
87  	@After
88  	public void tearDown() throws Exception {
89  		reader.close();
90  		inserter.close();
91  		super.tearDown();
92  	}
93  
94  	@Test
95  	public void testDeleteDelete() throws Exception {
96  		assertNull(merger.merge(baseNote, null, null, null, null));
97  	}
98  
99  	@Test
100 	public void testEditDelete() throws Exception {
101 		Note edit = newNote("edit");
102 		assertSame(merger.merge(baseNote, edit, null, null, null), edit);
103 		assertSame(merger.merge(baseNote, null, edit, null, null), edit);
104 	}
105 
106 	@Test
107 	public void testIdenticalEdit() throws Exception {
108 		Note edit = newNote("edit");
109 		assertSame(merger.merge(baseNote, edit, edit, null, null), edit);
110 	}
111 
112 	@Test
113 	public void testEditEdit() throws Exception {
114 		Note edit1 = newNote("edit1");
115 		Note edit2 = newNote("edit2");
116 
117 		Note result = merger.merge(baseNote, edit1, edit2, reader, inserter);
118 		assertEquals(result, noteOn); // same note
119 		assertEquals(result.getData(), tr.blob("edit1edit2"));
120 
121 		result = merger.merge(baseNote, edit2, edit1, reader, inserter);
122 		assertEquals(result, noteOn); // same note
123 		assertEquals(result.getData(), tr.blob("edit2edit1"));
124 	}
125 
126 	@Test
127 	public void testIdenticalAdd() throws Exception {
128 		Note add = newNote("add");
129 		assertSame(merger.merge(null, add, add, null, null), add);
130 	}
131 
132 	@Test
133 	public void testAddAdd() throws Exception {
134 		Note add1 = newNote("add1");
135 		Note add2 = newNote("add2");
136 
137 		Note result = merger.merge(null, add1, add2, reader, inserter);
138 		assertEquals(result, noteOn); // same note
139 		assertEquals(result.getData(), tr.blob("add1add2"));
140 
141 		result = merger.merge(null, add2, add1, reader, inserter);
142 		assertEquals(result, noteOn); // same note
143 		assertEquals(result.getData(), tr.blob("add2add1"));
144 	}
145 
146 	private Note newNote(String data) throws Exception {
147 		return new Note(noteOn, tr.blob(data));
148 	}
149 }