henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license |
| 5 | * that can be found in the LICENSE file in the root of the source |
| 6 | * tree. An additional intellectual property rights grant can be found |
| 7 | * in the file PATENTS. All contributing project authors may |
| 8 | * be found in the AUTHORS file in the root of the source tree. |
| 9 | */ |
| 10 | |
Steve Anton | 10542f2 | 2019-01-11 17:11:00 | [diff] [blame] | 11 | #include "rtc_base/byte_buffer.h" |
Yves Gerey | 3e70781 | 2018-11-28 15:47:49 | [diff] [blame] | 12 | |
| 13 | #include <string.h> |
| 14 | |
Mirko Bonadei | 92ea95e | 2017-09-15 04:47:31 | [diff] [blame] | 15 | #include "rtc_base/arraysize.h" |
Steve Anton | 10542f2 | 2019-01-11 17:11:00 | [diff] [blame] | 16 | #include "rtc_base/byte_order.h" |
Yves Gerey | 3e70781 | 2018-11-28 15:47:49 | [diff] [blame] | 17 | #include "test/gtest.h" |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 18 | |
| 19 | namespace rtc { |
| 20 | |
| 21 | TEST(ByteBufferTest, TestByteOrder) { |
Peter Boström | 0c4e06b | 2015-10-07 10:23:21 | [diff] [blame] | 22 | uint16_t n16 = 1; |
| 23 | uint32_t n32 = 1; |
| 24 | uint64_t n64 = 1; |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 25 | |
| 26 | EXPECT_EQ(n16, NetworkToHost16(HostToNetwork16(n16))); |
| 27 | EXPECT_EQ(n32, NetworkToHost32(HostToNetwork32(n32))); |
| 28 | EXPECT_EQ(n64, NetworkToHost64(HostToNetwork64(n64))); |
| 29 | |
| 30 | if (IsHostBigEndian()) { |
| 31 | // The host is the network (big) endian. |
| 32 | EXPECT_EQ(n16, HostToNetwork16(n16)); |
| 33 | EXPECT_EQ(n32, HostToNetwork32(n32)); |
| 34 | EXPECT_EQ(n64, HostToNetwork64(n64)); |
| 35 | |
| 36 | // GetBE converts big endian to little endian here. |
| 37 | EXPECT_EQ(n16 >> 8, GetBE16(&n16)); |
| 38 | EXPECT_EQ(n32 >> 24, GetBE32(&n32)); |
| 39 | EXPECT_EQ(n64 >> 56, GetBE64(&n64)); |
| 40 | } else { |
| 41 | // The host is little endian. |
| 42 | EXPECT_NE(n16, HostToNetwork16(n16)); |
| 43 | EXPECT_NE(n32, HostToNetwork32(n32)); |
| 44 | EXPECT_NE(n64, HostToNetwork64(n64)); |
| 45 | |
| 46 | // GetBE converts little endian to big endian here. |
| 47 | EXPECT_EQ(GetBE16(&n16), HostToNetwork16(n16)); |
| 48 | EXPECT_EQ(GetBE32(&n32), HostToNetwork32(n32)); |
| 49 | EXPECT_EQ(GetBE64(&n64), HostToNetwork64(n64)); |
| 50 | |
| 51 | // GetBE converts little endian to big endian here. |
| 52 | EXPECT_EQ(n16 << 8, GetBE16(&n16)); |
| 53 | EXPECT_EQ(n32 << 24, GetBE32(&n32)); |
| 54 | EXPECT_EQ(n64 << 56, GetBE64(&n64)); |
| 55 | } |
| 56 | } |
| 57 | |
| 58 | TEST(ByteBufferTest, TestBufferLength) { |
jbauch | f1f8720 | 2016-03-30 13:43:37 | [diff] [blame] | 59 | ByteBufferWriter buffer; |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 60 | size_t size = 0; |
| 61 | EXPECT_EQ(size, buffer.Length()); |
| 62 | |
| 63 | buffer.WriteUInt8(1); |
| 64 | ++size; |
| 65 | EXPECT_EQ(size, buffer.Length()); |
| 66 | |
| 67 | buffer.WriteUInt16(1); |
| 68 | size += 2; |
| 69 | EXPECT_EQ(size, buffer.Length()); |
| 70 | |
| 71 | buffer.WriteUInt24(1); |
| 72 | size += 3; |
| 73 | EXPECT_EQ(size, buffer.Length()); |
| 74 | |
| 75 | buffer.WriteUInt32(1); |
| 76 | size += 4; |
| 77 | EXPECT_EQ(size, buffer.Length()); |
| 78 | |
| 79 | buffer.WriteUInt64(1); |
| 80 | size += 8; |
| 81 | EXPECT_EQ(size, buffer.Length()); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | TEST(ByteBufferTest, TestReadWriteBuffer) { |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 85 | ByteBufferWriter buffer; |
| 86 | ByteBufferReader read_buf(nullptr, 0); |
| 87 | uint8_t ru8; |
| 88 | EXPECT_FALSE(read_buf.ReadUInt8(&ru8)); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 89 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 90 | // Write and read uint8_t. |
| 91 | uint8_t wu8 = 1; |
| 92 | buffer.WriteUInt8(wu8); |
| 93 | ByteBufferReader read_buf1(buffer.Data(), buffer.Length()); |
| 94 | EXPECT_TRUE(read_buf1.ReadUInt8(&ru8)); |
| 95 | EXPECT_EQ(wu8, ru8); |
| 96 | EXPECT_EQ(0U, read_buf1.Length()); |
| 97 | buffer.Clear(); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 98 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 99 | // Write and read uint16_t. |
| 100 | uint16_t wu16 = (1 << 8) + 1; |
| 101 | buffer.WriteUInt16(wu16); |
| 102 | ByteBufferReader read_buf2(buffer.Data(), buffer.Length()); |
| 103 | uint16_t ru16; |
| 104 | EXPECT_TRUE(read_buf2.ReadUInt16(&ru16)); |
| 105 | EXPECT_EQ(wu16, ru16); |
| 106 | EXPECT_EQ(0U, read_buf2.Length()); |
| 107 | buffer.Clear(); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 108 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 109 | // Write and read uint24. |
| 110 | uint32_t wu24 = (3 << 16) + (2 << 8) + 1; |
| 111 | buffer.WriteUInt24(wu24); |
| 112 | ByteBufferReader read_buf3(buffer.Data(), buffer.Length()); |
| 113 | uint32_t ru24; |
| 114 | EXPECT_TRUE(read_buf3.ReadUInt24(&ru24)); |
| 115 | EXPECT_EQ(wu24, ru24); |
| 116 | EXPECT_EQ(0U, read_buf3.Length()); |
| 117 | buffer.Clear(); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 118 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 119 | // Write and read uint32_t. |
| 120 | uint32_t wu32 = (4 << 24) + (3 << 16) + (2 << 8) + 1; |
| 121 | buffer.WriteUInt32(wu32); |
| 122 | ByteBufferReader read_buf4(buffer.Data(), buffer.Length()); |
| 123 | uint32_t ru32; |
| 124 | EXPECT_TRUE(read_buf4.ReadUInt32(&ru32)); |
| 125 | EXPECT_EQ(wu32, ru32); |
| 126 | EXPECT_EQ(0U, read_buf3.Length()); |
| 127 | buffer.Clear(); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 128 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 129 | // Write and read uint64_t. |
| 130 | uint32_t another32 = (8 << 24) + (7 << 16) + (6 << 8) + 5; |
| 131 | uint64_t wu64 = (static_cast<uint64_t>(another32) << 32) + wu32; |
| 132 | buffer.WriteUInt64(wu64); |
| 133 | ByteBufferReader read_buf5(buffer.Data(), buffer.Length()); |
| 134 | uint64_t ru64; |
| 135 | EXPECT_TRUE(read_buf5.ReadUInt64(&ru64)); |
| 136 | EXPECT_EQ(wu64, ru64); |
| 137 | EXPECT_EQ(0U, read_buf5.Length()); |
| 138 | buffer.Clear(); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 139 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 140 | // Write and read string. |
| 141 | std::string write_string("hello"); |
| 142 | buffer.WriteString(write_string); |
| 143 | ByteBufferReader read_buf6(buffer.Data(), buffer.Length()); |
| 144 | std::string read_string; |
| 145 | EXPECT_TRUE(read_buf6.ReadString(&read_string, write_string.size())); |
| 146 | EXPECT_EQ(write_string, read_string); |
| 147 | EXPECT_EQ(0U, read_buf6.Length()); |
| 148 | buffer.Clear(); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 149 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 150 | // Write and read bytes |
| 151 | char write_bytes[] = "foo"; |
| 152 | buffer.WriteBytes(write_bytes, 3); |
| 153 | ByteBufferReader read_buf7(buffer.Data(), buffer.Length()); |
| 154 | char read_bytes[3]; |
| 155 | EXPECT_TRUE(read_buf7.ReadBytes(read_bytes, 3)); |
| 156 | for (int i = 0; i < 3; ++i) { |
| 157 | EXPECT_EQ(write_bytes[i], read_bytes[i]); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 158 | } |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 159 | EXPECT_EQ(0U, read_buf7.Length()); |
| 160 | buffer.Clear(); |
| 161 | |
| 162 | // Write and read reserved buffer space |
| 163 | char* write_dst = buffer.ReserveWriteBuffer(3); |
| 164 | memcpy(write_dst, write_bytes, 3); |
| 165 | ByteBufferReader read_buf8(buffer.Data(), buffer.Length()); |
| 166 | memset(read_bytes, 0, 3); |
| 167 | EXPECT_TRUE(read_buf8.ReadBytes(read_bytes, 3)); |
| 168 | for (int i = 0; i < 3; ++i) { |
| 169 | EXPECT_EQ(write_bytes[i], read_bytes[i]); |
| 170 | } |
| 171 | EXPECT_EQ(0U, read_buf8.Length()); |
| 172 | buffer.Clear(); |
| 173 | |
| 174 | // Write and read in order. |
| 175 | buffer.WriteUInt8(wu8); |
| 176 | buffer.WriteUInt16(wu16); |
| 177 | buffer.WriteUInt24(wu24); |
| 178 | buffer.WriteUInt32(wu32); |
| 179 | buffer.WriteUInt64(wu64); |
| 180 | ByteBufferReader read_buf9(buffer.Data(), buffer.Length()); |
| 181 | EXPECT_TRUE(read_buf9.ReadUInt8(&ru8)); |
| 182 | EXPECT_EQ(wu8, ru8); |
| 183 | EXPECT_TRUE(read_buf9.ReadUInt16(&ru16)); |
| 184 | EXPECT_EQ(wu16, ru16); |
| 185 | EXPECT_TRUE(read_buf9.ReadUInt24(&ru24)); |
| 186 | EXPECT_EQ(wu24, ru24); |
| 187 | EXPECT_TRUE(read_buf9.ReadUInt32(&ru32)); |
| 188 | EXPECT_EQ(wu32, ru32); |
| 189 | EXPECT_TRUE(read_buf9.ReadUInt64(&ru64)); |
| 190 | EXPECT_EQ(wu64, ru64); |
| 191 | EXPECT_EQ(0U, read_buf9.Length()); |
| 192 | buffer.Clear(); |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 193 | } |
| 194 | |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 195 | TEST(ByteBufferTest, TestReadWriteUVarint) { |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 196 | ByteBufferWriter write_buffer; |
| 197 | size_t size = 0; |
| 198 | EXPECT_EQ(size, write_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 199 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 200 | write_buffer.WriteUVarint(1u); |
| 201 | ++size; |
| 202 | EXPECT_EQ(size, write_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 203 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 204 | write_buffer.WriteUVarint(2u); |
| 205 | ++size; |
| 206 | EXPECT_EQ(size, write_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 207 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 208 | write_buffer.WriteUVarint(27u); |
| 209 | ++size; |
| 210 | EXPECT_EQ(size, write_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 211 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 212 | write_buffer.WriteUVarint(149u); |
| 213 | size += 2; |
| 214 | EXPECT_EQ(size, write_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 215 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 216 | write_buffer.WriteUVarint(68719476736u); |
| 217 | size += 6; |
| 218 | EXPECT_EQ(size, write_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 219 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 220 | ByteBufferReader read_buffer(write_buffer.Data(), write_buffer.Length()); |
| 221 | EXPECT_EQ(size, read_buffer.Length()); |
| 222 | uint64_t val1, val2, val3, val4, val5; |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 223 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 224 | ASSERT_TRUE(read_buffer.ReadUVarint(&val1)); |
| 225 | EXPECT_EQ(1u, val1); |
| 226 | --size; |
| 227 | EXPECT_EQ(size, read_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 228 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 229 | ASSERT_TRUE(read_buffer.ReadUVarint(&val2)); |
| 230 | EXPECT_EQ(2u, val2); |
| 231 | --size; |
| 232 | EXPECT_EQ(size, read_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 233 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 234 | ASSERT_TRUE(read_buffer.ReadUVarint(&val3)); |
| 235 | EXPECT_EQ(27u, val3); |
| 236 | --size; |
| 237 | EXPECT_EQ(size, read_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 238 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 239 | ASSERT_TRUE(read_buffer.ReadUVarint(&val4)); |
| 240 | EXPECT_EQ(149u, val4); |
| 241 | size -= 2; |
| 242 | EXPECT_EQ(size, read_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 243 | |
Danil Chapovalov | 7b46e17 | 2019-11-14 16:40:23 | [diff] [blame] | 244 | ASSERT_TRUE(read_buffer.ReadUVarint(&val5)); |
| 245 | EXPECT_EQ(68719476736u, val5); |
| 246 | size -= 6; |
| 247 | EXPECT_EQ(size, read_buffer.Length()); |
mikescarlett | 9a20fa6 | 2016-04-11 23:11:38 | [diff] [blame] | 248 | } |
| 249 | |
henrike@webrtc.org | f048872 | 2014-05-13 18:00:26 | [diff] [blame] | 250 | } // namespace rtc |