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1   /*
2    * Copyright (C) 2010, Google Inc.
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.lib;
45  
46  import static org.junit.Assert.assertEquals;
47  import static org.junit.Assert.assertFalse;
48  import static org.junit.Assert.assertNull;
49  import static org.junit.Assert.assertSame;
50  import static org.junit.Assert.assertTrue;
51  
52  import org.junit.Test;
53  
54  public class SymbolicRefTest {
55  	private static final ObjectId ID_A = ObjectId
56  			.fromString("41eb0d88f833b558bddeb269b7ab77399cdf98ed");
57  
58  	private static final ObjectId ID_B = ObjectId
59  			.fromString("698dd0b8d0c299f080559a1cffc7fe029479a408");
60  
61  	private static final String targetName = "refs/heads/a.test.ref";
62  
63  	private static final String name = "refs/remotes/origin/HEAD";
64  
65  	@Test
66  	public void testConstructor() {
67  		Ref t;
68  		SymbolicRef r;
69  
70  		t = new ObjectIdRef.Unpeeled(Ref.Storage.NEW, targetName, null);
71  		r = new SymbolicRef(name, t, 1);
72  		assertSame(Ref.Storage.LOOSE, r.getStorage());
73  		assertSame(name, r.getName());
74  		assertNull("no id on new ref", r.getObjectId());
75  		assertFalse("not peeled", r.isPeeled());
76  		assertNull("no peel id", r.getPeeledObjectId());
77  		assertSame("leaf is t", t, r.getLeaf());
78  		assertSame("target is t", t, r.getTarget());
79  		assertTrue("is symbolic", r.isSymbolic());
80  		assertTrue("holds update index", r.getUpdateIndex() == 1);
81  
82  		t = new ObjectIdRef.Unpeeled(Ref.Storage.PACKED, targetName, ID_A);
83  		r = new SymbolicRef(name, t, 2);
84  		assertSame(Ref.Storage.LOOSE, r.getStorage());
85  		assertSame(name, r.getName());
86  		assertSame(ID_A, r.getObjectId());
87  		assertFalse("not peeled", r.isPeeled());
88  		assertNull("no peel id", r.getPeeledObjectId());
89  		assertSame("leaf is t", t, r.getLeaf());
90  		assertSame("target is t", t, r.getTarget());
91  		assertTrue("is symbolic", r.isSymbolic());
92  		assertTrue("holds update index", r.getUpdateIndex() == 2);
93  	}
94  
95  	@Test
96  	public void testLeaf() {
97  		Ref a;
98  		SymbolicRef b, c, d;
99  
100 		a = new ObjectIdRef.PeeledTag(Ref.Storage.PACKED, targetName, ID_A, ID_B);
101 		b = new SymbolicRef("B", a);
102 		c = new SymbolicRef("C", b);
103 		d = new SymbolicRef("D", c);
104 
105 		assertSame(c, d.getTarget());
106 		assertSame(b, c.getTarget());
107 		assertSame(a, b.getTarget());
108 
109 		assertSame(a, d.getLeaf());
110 		assertSame(a, c.getLeaf());
111 		assertSame(a, b.getLeaf());
112 		assertSame(a, a.getLeaf());
113 
114 		assertSame(ID_A, d.getObjectId());
115 		assertSame(ID_A, c.getObjectId());
116 		assertSame(ID_A, b.getObjectId());
117 
118 		assertTrue(d.isPeeled());
119 		assertTrue(c.isPeeled());
120 		assertTrue(b.isPeeled());
121 
122 		assertSame(ID_B, d.getPeeledObjectId());
123 		assertSame(ID_B, c.getPeeledObjectId());
124 		assertSame(ID_B, b.getPeeledObjectId());
125 	}
126 
127 	@Test
128 	public void testToString() {
129 		Ref a;
130 		SymbolicRef b, c, d;
131 
132 		a = new ObjectIdRef.PeeledTag(Ref.Storage.PACKED, targetName, ID_A, ID_B);
133 		b = new SymbolicRef("B", a);
134 		c = new SymbolicRef("C", b);
135 		d = new SymbolicRef("D", c);
136 
137 		assertEquals("SymbolicRef[D -> C -> B -> " + targetName + "="
138 				+ ID_A.name() + "(-1)]", d.toString());
139 	}
140 }