1 /*
2 * Copyright (C) 2012, 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.internal.storage.file;
45
46 import static org.junit.Assert.assertFalse;
47 import static org.junit.Assert.assertTrue;
48
49 import com.googlecode.javaewah.EWAHCompressedBitmap;
50
51 import org.eclipse.jgit.internal.storage.file.InflatingBitSet;
52 import org.junit.Test;
53
54 public class InflatingBitSetTest {
55
56 @Test
57 public void testMaybeContains() {
58 EWAHCompressedBitmap ecb = new EWAHCompressedBitmap();
59 ecb.set(63);
60 ecb.set(64);
61 ecb.set(128);
62
63 InflatingBitSet ibs = new InflatingBitSet(ecb);
64 assertTrue(ibs.maybeContains(0));
65 assertFalse(ibs.contains(0)); // Advance
66 assertFalse(ibs.maybeContains(0));
67 assertTrue(ibs.maybeContains(63));
68 assertTrue(ibs.maybeContains(64));
69 assertTrue(ibs.maybeContains(65));
70 assertFalse(ibs.maybeContains(129));
71 }
72
73 @Test
74 public void testContainsMany() {
75 EWAHCompressedBitmap ecb = new EWAHCompressedBitmap();
76 ecb.set(64);
77 ecb.set(65);
78 ecb.set(1024);
79
80 InflatingBitSet ibs = new InflatingBitSet(ecb);
81 assertFalse(ibs.contains(0));
82 assertTrue(ibs.contains(64));
83 assertTrue(ibs.contains(65));
84 assertFalse(ibs.contains(66));
85 assertTrue(ibs.contains(1024));
86 assertFalse(ibs.contains(1025));
87 }
88
89 @Test
90 public void testContainsOne() {
91 EWAHCompressedBitmap ecb = new EWAHCompressedBitmap();
92 ecb.set(64);
93
94 InflatingBitSet ibs = new InflatingBitSet(ecb);
95 assertTrue(ibs.contains(64));
96 assertTrue(ibs.contains(64));
97 assertFalse(ibs.contains(65));
98 assertFalse(ibs.contains(63));
99 }
100
101 @Test
102 public void testContainsEmpty() {
103 InflatingBitSet ibs = new InflatingBitSet(new EWAHCompressedBitmap());
104 assertFalse(ibs.maybeContains(0));
105 assertFalse(ibs.contains(0));
106 }
107 }