1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/base/buffer.h"
#include "webrtc/base/gunit.h"
#include <algorithm> // std::swap (pre-C++11)
#include <utility> // std::swap (C++11 and later)
namespace rtc {
namespace {
// clang-format off
const uint8_t kTestData[] = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7,
0x8, 0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf};
// clang-format on
void TestBuf(const Buffer& b1, size_t size, size_t capacity) {
EXPECT_EQ(b1.size(), size);
EXPECT_EQ(b1.capacity(), capacity);
}
} // namespace
TEST(BufferTest, TestConstructEmpty) {
TestBuf(Buffer(), 0, 0);
TestBuf(Buffer(Buffer()), 0, 0);
TestBuf(Buffer(0), 0, 0);
// We can't use a literal 0 for the first argument, because C++ will allow
// that to be considered a null pointer, which makes the call ambiguous.
TestBuf(Buffer(0 + 0, 10), 0, 10);
TestBuf(Buffer(kTestData, 0), 0, 0);
TestBuf(Buffer(kTestData, 0, 20), 0, 20);
}
TEST(BufferTest, TestConstructData) {
Buffer buf(kTestData, 7);
EXPECT_EQ(buf.size(), 7u);
EXPECT_EQ(buf.capacity(), 7u);
EXPECT_EQ(0, memcmp(buf.data(), kTestData, 7));
}
TEST(BufferTest, TestConstructDataWithCapacity) {
Buffer buf(kTestData, 7, 14);
EXPECT_EQ(buf.size(), 7u);
EXPECT_EQ(buf.capacity(), 14u);
EXPECT_EQ(0, memcmp(buf.data(), kTestData, 7));
}
TEST(BufferTest, TestConstructArray) {
Buffer buf(kTestData);
EXPECT_EQ(buf.size(), 16u);
EXPECT_EQ(buf.capacity(), 16u);
EXPECT_EQ(0, memcmp(buf.data(), kTestData, 16));
}
TEST(BufferTest, TestConstructCopy) {
Buffer buf1(kTestData), buf2(buf1);
EXPECT_EQ(buf2.size(), 16u);
EXPECT_EQ(buf2.capacity(), 16u);
EXPECT_EQ(0, memcmp(buf2.data(), kTestData, 16));
EXPECT_NE(buf1.data(), buf2.data());
EXPECT_EQ(buf1, buf2);
}
TEST(BufferTest, TestAssign) {
Buffer buf1, buf2(kTestData, sizeof(kTestData), 256);
EXPECT_NE(buf1, buf2);
buf1 = buf2;
EXPECT_EQ(buf1, buf2);
EXPECT_NE(buf1.data(), buf2.data());
}
TEST(BufferTest, TestSetData) {
Buffer buf(kTestData + 4, 7);
buf.SetData(kTestData, 9);
EXPECT_EQ(buf.size(), 9u);
EXPECT_EQ(buf.capacity(), 9u);
EXPECT_EQ(0, memcmp(buf.data(), kTestData, 9));
}
TEST(BufferTest, TestAppendData) {
Buffer buf(kTestData + 4, 3);
buf.AppendData(kTestData + 10, 2);
const int8_t exp[] = {0x4, 0x5, 0x6, 0xa, 0xb};
EXPECT_EQ(buf, Buffer(exp));
}
TEST(BufferTest, TestSetSizeSmaller) {
Buffer buf;
buf.SetData(kTestData, 15);
buf.SetSize(10);
EXPECT_EQ(buf.size(), 10u);
EXPECT_EQ(buf.capacity(), 15u); // Hasn't shrunk.
EXPECT_EQ(buf, Buffer(kTestData, 10));
}
TEST(BufferTest, TestSetSizeLarger) {
Buffer buf;
buf.SetData(kTestData, 15);
EXPECT_EQ(buf.size(), 15u);
EXPECT_EQ(buf.capacity(), 15u);
buf.SetSize(20);
EXPECT_EQ(buf.size(), 20u);
EXPECT_EQ(buf.capacity(), 20u); // Has grown.
EXPECT_EQ(0, memcmp(buf.data(), kTestData, 15));
}
TEST(BufferTest, TestEnsureCapacitySmaller) {
Buffer buf(kTestData);
const char* data = buf.data<char>();
buf.EnsureCapacity(4);
EXPECT_EQ(buf.capacity(), 16u); // Hasn't shrunk.
EXPECT_EQ(buf.data<char>(), data); // No reallocation.
EXPECT_EQ(buf, Buffer(kTestData));
}
TEST(BufferTest, TestEnsureCapacityLarger) {
Buffer buf(kTestData, 5);
buf.EnsureCapacity(10);
const int8_t* data = buf.data<int8_t>();
EXPECT_EQ(buf.capacity(), 10u);
buf.AppendData(kTestData + 5, 5);
EXPECT_EQ(buf.data<int8_t>(), data); // No reallocation.
EXPECT_EQ(buf, Buffer(kTestData, 10));
}
TEST(BufferTest, TestMoveConstruct) {
Buffer buf1(kTestData, 3, 40);
const uint8_t* data = buf1.data();
Buffer buf2(buf1.Pass());
EXPECT_EQ(buf2.size(), 3u);
EXPECT_EQ(buf2.capacity(), 40u);
EXPECT_EQ(buf2.data(), data);
buf1.Clear();
EXPECT_EQ(buf1.size(), 0u);
EXPECT_EQ(buf1.capacity(), 0u);
EXPECT_EQ(buf1.data(), nullptr);
}
TEST(BufferTest, TestMoveAssign) {
Buffer buf1(kTestData, 3, 40);
const uint8_t* data = buf1.data();
Buffer buf2(kTestData);
buf2 = buf1.Pass();
EXPECT_EQ(buf2.size(), 3u);
EXPECT_EQ(buf2.capacity(), 40u);
EXPECT_EQ(buf2.data(), data);
buf1.Clear();
EXPECT_EQ(buf1.size(), 0u);
EXPECT_EQ(buf1.capacity(), 0u);
EXPECT_EQ(buf1.data(), nullptr);
}
TEST(BufferTest, TestSwap) {
Buffer buf1(kTestData, 3);
Buffer buf2(kTestData, 6, 40);
uint8_t* data1 = buf1.data();
uint8_t* data2 = buf2.data();
using std::swap;
swap(buf1, buf2);
EXPECT_EQ(buf1.size(), 6u);
EXPECT_EQ(buf1.capacity(), 40u);
EXPECT_EQ(buf1.data(), data2);
EXPECT_EQ(buf2.size(), 3u);
EXPECT_EQ(buf2.capacity(), 3u);
EXPECT_EQ(buf2.data(), data1);
}
} // namespace rtc
|
