1 /*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "BitSet_test"
18
19 #include <utils/BitSet.h>
20 #include <cutils/log.h>
21 #include <gtest/gtest.h>
22 #include <unistd.h>
23
24 namespace android {
25
26 class BitSet32Test : public testing::Test {
27 protected:
28 BitSet32 b1;
29 BitSet32 b2;
TearDown()30 virtual void TearDown() {
31 b1.clear();
32 b2.clear();
33 }
34 };
35
36
TEST_F(BitSet32Test,BitWiseOr)37 TEST_F(BitSet32Test, BitWiseOr) {
38 b1.markBit(2);
39 b2.markBit(4);
40
41 BitSet32 tmp = b1 | b2;
42 EXPECT_EQ(tmp.count(), 2u);
43 EXPECT_TRUE(tmp.hasBit(2) && tmp.hasBit(4));
44 // Check that the operator is symmetric
45 EXPECT_TRUE((b2 | b1) == (b1 | b2));
46
47 b1 |= b2;
48 EXPECT_EQ(b1.count(), 2u);
49 EXPECT_TRUE(b1.hasBit(2) && b1.hasBit(4));
50 EXPECT_TRUE(b2.hasBit(4) && b2.count() == 1u);
51 }
TEST_F(BitSet32Test,BitWiseAnd_Disjoint)52 TEST_F(BitSet32Test, BitWiseAnd_Disjoint) {
53 b1.markBit(2);
54 b1.markBit(4);
55 b1.markBit(6);
56
57 BitSet32 tmp = b1 & b2;
58 EXPECT_TRUE(tmp.isEmpty());
59 // Check that the operator is symmetric
60 EXPECT_TRUE((b2 & b1) == (b1 & b2));
61
62 b2 &= b1;
63 EXPECT_TRUE(b2.isEmpty());
64 EXPECT_EQ(b1.count(), 3u);
65 EXPECT_TRUE(b1.hasBit(2) && b1.hasBit(4) && b1.hasBit(6));
66 }
67
TEST_F(BitSet32Test,BitWiseAnd_NonDisjoint)68 TEST_F(BitSet32Test, BitWiseAnd_NonDisjoint) {
69 b1.markBit(2);
70 b1.markBit(4);
71 b1.markBit(6);
72 b2.markBit(3);
73 b2.markBit(6);
74 b2.markBit(9);
75
76 BitSet32 tmp = b1 & b2;
77 EXPECT_EQ(tmp.count(), 1u);
78 EXPECT_TRUE(tmp.hasBit(6));
79 // Check that the operator is symmetric
80 EXPECT_TRUE((b2 & b1) == (b1 & b2));
81
82 b1 &= b2;
83 EXPECT_EQ(b1.count(), 1u);
84 EXPECT_EQ(b2.count(), 3u);
85 EXPECT_TRUE(b2.hasBit(3) && b2.hasBit(6) && b2.hasBit(9));
86 }
87
TEST_F(BitSet32Test,MarkFirstUnmarkedBit)88 TEST_F(BitSet32Test, MarkFirstUnmarkedBit) {
89 b1.markBit(1);
90
91 b1.markFirstUnmarkedBit();
92 EXPECT_EQ(b1.count(), 2u);
93 EXPECT_TRUE(b1.hasBit(0) && b1.hasBit(1));
94
95 b1.markFirstUnmarkedBit();
96 EXPECT_EQ(b1.count(), 3u);
97 EXPECT_TRUE(b1.hasBit(0) && b1.hasBit(1) && b1.hasBit(2));
98 }
99
TEST_F(BitSet32Test,ClearFirstMarkedBit)100 TEST_F(BitSet32Test, ClearFirstMarkedBit) {
101 b1.markBit(0);
102 b1.markBit(10);
103
104 b1.clearFirstMarkedBit();
105 EXPECT_EQ(b1.count(), 1u);
106 EXPECT_TRUE(b1.hasBit(10));
107
108 b1.markBit(30);
109 b1.clearFirstMarkedBit();
110 EXPECT_EQ(b1.count(), 1u);
111 EXPECT_TRUE(b1.hasBit(30));
112 }
113
TEST_F(BitSet32Test,ClearLastMarkedBit)114 TEST_F(BitSet32Test, ClearLastMarkedBit) {
115 b1.markBit(10);
116 b1.markBit(31);
117
118 b1.clearLastMarkedBit();
119 EXPECT_EQ(b1.count(), 1u);
120 EXPECT_TRUE(b1.hasBit(10));
121
122 b1.markBit(5);
123 b1.clearLastMarkedBit();
124 EXPECT_EQ(b1.count(), 1u);
125 EXPECT_TRUE(b1.hasBit(5));
126 }
127
TEST_F(BitSet32Test,FillAndClear)128 TEST_F(BitSet32Test, FillAndClear) {
129 EXPECT_TRUE(b1.isEmpty());
130 for (size_t i = 0; i < 32; i++) {
131 b1.markFirstUnmarkedBit();
132 }
133 EXPECT_TRUE(b1.isFull());
134 b1.clear();
135 EXPECT_TRUE(b1.isEmpty());
136 }
137
TEST_F(BitSet32Test,GetIndexOfBit)138 TEST_F(BitSet32Test, GetIndexOfBit) {
139 b1.markBit(1);
140 b1.markBit(4);
141 EXPECT_EQ(0U, b1.getIndexOfBit(1));
142 EXPECT_EQ(1U, b1.getIndexOfBit(4));
143 b1.markFirstUnmarkedBit();
144 EXPECT_EQ(1U, b1.getIndexOfBit(1));
145 EXPECT_EQ(2U, b1.getIndexOfBit(4));
146 }
147
148 class BitSet64Test : public testing::Test {
149 protected:
150 BitSet64 b1;
151 BitSet64 b2;
TearDown()152 virtual void TearDown() {
153 b1.clear();
154 b2.clear();
155 }
156 };
157
158
TEST_F(BitSet64Test,BitWiseOr)159 TEST_F(BitSet64Test, BitWiseOr) {
160 b1.markBit(20);
161 b2.markBit(40);
162
163 BitSet64 tmp = b1 | b2;
164 EXPECT_EQ(tmp.count(), 2u);
165 EXPECT_TRUE(tmp.hasBit(20) && tmp.hasBit(40));
166 // Check that the operator is symmetric
167 EXPECT_TRUE((b2 | b1) == (b1 | b2));
168
169 b1 |= b2;
170 EXPECT_EQ(b1.count(), 2u);
171 EXPECT_TRUE(b1.hasBit(20) && b1.hasBit(40));
172 EXPECT_TRUE(b2.hasBit(40) && b2.count() == 1u);
173 }
TEST_F(BitSet64Test,BitWiseAnd_Disjoint)174 TEST_F(BitSet64Test, BitWiseAnd_Disjoint) {
175 b1.markBit(20);
176 b1.markBit(40);
177 b1.markBit(60);
178
179 BitSet64 tmp = b1 & b2;
180 EXPECT_TRUE(tmp.isEmpty());
181 // Check that the operator is symmetric
182 EXPECT_TRUE((b2 & b1) == (b1 & b2));
183
184 b2 &= b1;
185 EXPECT_TRUE(b2.isEmpty());
186 EXPECT_EQ(b1.count(), 3u);
187 EXPECT_TRUE(b1.hasBit(20) && b1.hasBit(40) && b1.hasBit(60));
188 }
189
TEST_F(BitSet64Test,BitWiseAnd_NonDisjoint)190 TEST_F(BitSet64Test, BitWiseAnd_NonDisjoint) {
191 b1.markBit(20);
192 b1.markBit(40);
193 b1.markBit(60);
194 b2.markBit(30);
195 b2.markBit(60);
196 b2.markBit(63);
197
198 BitSet64 tmp = b1 & b2;
199 EXPECT_EQ(tmp.count(), 1u);
200 EXPECT_TRUE(tmp.hasBit(60));
201 // Check that the operator is symmetric
202 EXPECT_TRUE((b2 & b1) == (b1 & b2));
203
204 b1 &= b2;
205 EXPECT_EQ(b1.count(), 1u);
206 EXPECT_EQ(b2.count(), 3u);
207 EXPECT_TRUE(b2.hasBit(30) && b2.hasBit(60) && b2.hasBit(63));
208 }
209
TEST_F(BitSet64Test,MarkFirstUnmarkedBit)210 TEST_F(BitSet64Test, MarkFirstUnmarkedBit) {
211 b1.markBit(1);
212
213 b1.markFirstUnmarkedBit();
214 EXPECT_EQ(b1.count(), 2u);
215 EXPECT_TRUE(b1.hasBit(0) && b1.hasBit(1));
216
217 b1.markFirstUnmarkedBit();
218 EXPECT_EQ(b1.count(), 3u);
219 EXPECT_TRUE(b1.hasBit(0) && b1.hasBit(1) && b1.hasBit(2));
220 }
221
TEST_F(BitSet64Test,ClearFirstMarkedBit)222 TEST_F(BitSet64Test, ClearFirstMarkedBit) {
223 b1.markBit(0);
224 b1.markBit(10);
225
226 b1.clearFirstMarkedBit();
227 EXPECT_EQ(b1.count(), 1u);
228 EXPECT_TRUE(b1.hasBit(10));
229
230 b1.markBit(50);
231 b1.clearFirstMarkedBit();
232 EXPECT_EQ(b1.count(), 1u);
233 EXPECT_TRUE(b1.hasBit(50));
234 }
235
TEST_F(BitSet64Test,ClearLastMarkedBit)236 TEST_F(BitSet64Test, ClearLastMarkedBit) {
237 b1.markBit(10);
238 b1.markBit(63);
239
240 b1.clearLastMarkedBit();
241 EXPECT_EQ(b1.count(), 1u);
242 EXPECT_TRUE(b1.hasBit(10));
243
244 b1.markBit(5);
245 b1.clearLastMarkedBit();
246 EXPECT_EQ(b1.count(), 1u);
247 EXPECT_TRUE(b1.hasBit(5));
248 }
249
TEST_F(BitSet64Test,FillAndClear)250 TEST_F(BitSet64Test, FillAndClear) {
251 EXPECT_TRUE(b1.isEmpty());
252 for (size_t i = 0; i < 64; i++) {
253 b1.markFirstUnmarkedBit();
254 }
255 EXPECT_TRUE(b1.isFull());
256 b1.clear();
257 EXPECT_TRUE(b1.isEmpty());
258 }
259
TEST_F(BitSet64Test,GetIndexOfBit)260 TEST_F(BitSet64Test, GetIndexOfBit) {
261 b1.markBit(10);
262 b1.markBit(40);
263 EXPECT_EQ(0U, b1.getIndexOfBit(10));
264 EXPECT_EQ(1U, b1.getIndexOfBit(40));
265 b1.markFirstUnmarkedBit();
266 EXPECT_EQ(1U, b1.getIndexOfBit(10));
267 EXPECT_EQ(2U, b1.getIndexOfBit(40));
268 }
269
270 } // namespace android
271