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| 1 /* | |
| 2 * Copyright 2015 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 | |
| 11 #include <algorithm> | |
| 12 #include <string> | |
| 13 #include <vector> | |
| 14 | |
| 15 #include "webrtc/rtc_base/array_view.h" | |
| 16 #include "webrtc/rtc_base/buffer.h" | |
| 17 #include "webrtc/rtc_base/checks.h" | |
| 18 #include "webrtc/rtc_base/gunit.h" | |
| 19 #include "webrtc/test/gmock.h" | |
| 20 | |
| 21 namespace rtc { | |
| 22 | |
| 23 namespace { | |
| 24 | |
| 25 using ::testing::ElementsAre; | |
| 26 using ::testing::IsEmpty; | |
| 27 | |
| 28 template <typename T> | |
| 29 void Call(ArrayView<T>) {} | |
| 30 | |
| 31 } // namespace | |
| 32 | |
| 33 TEST(ArrayViewTest, TestConstructFromPtrAndArray) { | |
| 34 char arr[] = "Arrr!"; | |
| 35 const char carr[] = "Carrr!"; | |
| 36 Call<const char>(arr); | |
| 37 Call<const char>(carr); | |
| 38 Call<char>(arr); | |
| 39 // Call<char>(carr); // Compile error, because can't drop const. | |
| 40 // Call<int>(arr); // Compile error, because incompatible types. | |
| 41 ArrayView<int*> x; | |
| 42 EXPECT_EQ(0u, x.size()); | |
| 43 EXPECT_EQ(nullptr, x.data()); | |
| 44 ArrayView<char> y = arr; | |
| 45 EXPECT_EQ(6u, y.size()); | |
| 46 EXPECT_EQ(arr, y.data()); | |
| 47 ArrayView<char, 6> yf = arr; | |
| 48 static_assert(yf.size() == 6, ""); | |
| 49 EXPECT_EQ(arr, yf.data()); | |
| 50 ArrayView<const char> z(arr + 1, 3); | |
| 51 EXPECT_EQ(3u, z.size()); | |
| 52 EXPECT_EQ(arr + 1, z.data()); | |
| 53 ArrayView<const char, 3> zf(arr + 1, 3); | |
| 54 static_assert(zf.size() == 3, ""); | |
| 55 EXPECT_EQ(arr + 1, zf.data()); | |
| 56 ArrayView<const char> w(arr, 2); | |
| 57 EXPECT_EQ(2u, w.size()); | |
| 58 EXPECT_EQ(arr, w.data()); | |
| 59 ArrayView<const char, 2> wf(arr, 2); | |
| 60 static_assert(wf.size() == 2, ""); | |
| 61 EXPECT_EQ(arr, wf.data()); | |
| 62 ArrayView<char> q(arr, 0); | |
| 63 EXPECT_EQ(0u, q.size()); | |
| 64 EXPECT_EQ(nullptr, q.data()); | |
| 65 ArrayView<char, 0> qf(arr, 0); | |
| 66 static_assert(qf.size() == 0, ""); | |
| 67 EXPECT_EQ(nullptr, qf.data()); | |
| 68 #if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID) | |
| 69 // DCHECK error (nullptr with nonzero size). | |
| 70 EXPECT_DEATH(ArrayView<int>(static_cast<int*>(nullptr), 5), ""); | |
| 71 #endif | |
| 72 // These are compile errors, because incompatible types. | |
| 73 // ArrayView<int> m = arr; | |
| 74 // ArrayView<float> n(arr + 2, 2); | |
| 75 } | |
| 76 | |
| 77 TEST(ArrayViewTest, TestCopyConstructorVariable) { | |
| 78 char arr[] = "Arrr!"; | |
| 79 ArrayView<char> x = arr; | |
| 80 EXPECT_EQ(6u, x.size()); | |
| 81 EXPECT_EQ(arr, x.data()); | |
| 82 ArrayView<char> y = x; // Copy non-const -> non-const. | |
| 83 EXPECT_EQ(6u, y.size()); | |
| 84 EXPECT_EQ(arr, y.data()); | |
| 85 ArrayView<const char> z = x; // Copy non-const -> const. | |
| 86 EXPECT_EQ(6u, z.size()); | |
| 87 EXPECT_EQ(arr, z.data()); | |
| 88 ArrayView<const char> w = z; // Copy const -> const. | |
| 89 EXPECT_EQ(6u, w.size()); | |
| 90 EXPECT_EQ(arr, w.data()); | |
| 91 // ArrayView<char> v = z; // Compile error, because can't drop const. | |
| 92 } | |
| 93 | |
| 94 TEST(ArrayViewTest, TestCopyConstructorFixed) { | |
| 95 char arr[] = "Arrr!"; | |
| 96 ArrayView<char, 6> x = arr; | |
| 97 static_assert(x.size() == 6, ""); | |
| 98 EXPECT_EQ(arr, x.data()); | |
| 99 | |
| 100 // Copy fixed -> fixed. | |
| 101 ArrayView<char, 6> y = x; // Copy non-const -> non-const. | |
| 102 static_assert(y.size() == 6, ""); | |
| 103 EXPECT_EQ(arr, y.data()); | |
| 104 ArrayView<const char, 6> z = x; // Copy non-const -> const. | |
| 105 static_assert(z.size() == 6, ""); | |
| 106 EXPECT_EQ(arr, z.data()); | |
| 107 ArrayView<const char, 6> w = z; // Copy const -> const. | |
| 108 static_assert(w.size() == 6, ""); | |
| 109 EXPECT_EQ(arr, w.data()); | |
| 110 // ArrayView<char, 6> v = z; // Compile error, because can't drop const. | |
| 111 | |
| 112 // Copy fixed -> variable. | |
| 113 ArrayView<char> yv = x; // Copy non-const -> non-const. | |
| 114 EXPECT_EQ(6u, yv.size()); | |
| 115 EXPECT_EQ(arr, yv.data()); | |
| 116 ArrayView<const char> zv = x; // Copy non-const -> const. | |
| 117 EXPECT_EQ(6u, zv.size()); | |
| 118 EXPECT_EQ(arr, zv.data()); | |
| 119 ArrayView<const char> wv = z; // Copy const -> const. | |
| 120 EXPECT_EQ(6u, wv.size()); | |
| 121 EXPECT_EQ(arr, wv.data()); | |
| 122 // ArrayView<char> vv = z; // Compile error, because can't drop const. | |
| 123 } | |
| 124 | |
| 125 TEST(ArrayViewTest, TestCopyAssignmentVariable) { | |
| 126 char arr[] = "Arrr!"; | |
| 127 ArrayView<char> x(arr); | |
| 128 EXPECT_EQ(6u, x.size()); | |
| 129 EXPECT_EQ(arr, x.data()); | |
| 130 ArrayView<char> y; | |
| 131 y = x; // Copy non-const -> non-const. | |
| 132 EXPECT_EQ(6u, y.size()); | |
| 133 EXPECT_EQ(arr, y.data()); | |
| 134 ArrayView<const char> z; | |
| 135 z = x; // Copy non-const -> const. | |
| 136 EXPECT_EQ(6u, z.size()); | |
| 137 EXPECT_EQ(arr, z.data()); | |
| 138 ArrayView<const char> w; | |
| 139 w = z; // Copy const -> const. | |
| 140 EXPECT_EQ(6u, w.size()); | |
| 141 EXPECT_EQ(arr, w.data()); | |
| 142 // ArrayView<char> v; | |
| 143 // v = z; // Compile error, because can't drop const. | |
| 144 } | |
| 145 | |
| 146 TEST(ArrayViewTest, TestCopyAssignmentFixed) { | |
| 147 char arr[] = "Arrr!"; | |
| 148 char init[] = "Init!"; | |
| 149 ArrayView<char, 6> x(arr); | |
| 150 EXPECT_EQ(arr, x.data()); | |
| 151 | |
| 152 // Copy fixed -> fixed. | |
| 153 ArrayView<char, 6> y(init); | |
| 154 y = x; // Copy non-const -> non-const. | |
| 155 EXPECT_EQ(arr, y.data()); | |
| 156 ArrayView<const char, 6> z(init); | |
| 157 z = x; // Copy non-const -> const. | |
| 158 EXPECT_EQ(arr, z.data()); | |
| 159 ArrayView<const char, 6> w(init); | |
| 160 w = z; // Copy const -> const. | |
| 161 EXPECT_EQ(arr, w.data()); | |
| 162 // ArrayView<char, 6> v(init); | |
| 163 // v = z; // Compile error, because can't drop const. | |
| 164 | |
| 165 // Copy fixed -> variable. | |
| 166 ArrayView<char> yv; | |
| 167 yv = x; // Copy non-const -> non-const. | |
| 168 EXPECT_EQ(6u, yv.size()); | |
| 169 EXPECT_EQ(arr, yv.data()); | |
| 170 ArrayView<const char> zv; | |
| 171 zv = x; // Copy non-const -> const. | |
| 172 EXPECT_EQ(6u, zv.size()); | |
| 173 EXPECT_EQ(arr, zv.data()); | |
| 174 ArrayView<const char> wv; | |
| 175 wv = z; // Copy const -> const. | |
| 176 EXPECT_EQ(6u, wv.size()); | |
| 177 EXPECT_EQ(arr, wv.data()); | |
| 178 // ArrayView<char> v; | |
| 179 // v = z; // Compile error, because can't drop const. | |
| 180 } | |
| 181 | |
| 182 TEST(ArrayViewTest, TestStdVector) { | |
| 183 std::vector<int> v; | |
| 184 v.push_back(3); | |
| 185 v.push_back(11); | |
| 186 Call<const int>(v); | |
| 187 Call<int>(v); | |
| 188 // Call<unsigned int>(v); // Compile error, because incompatible types. | |
| 189 ArrayView<int> x = v; | |
| 190 EXPECT_EQ(2u, x.size()); | |
| 191 EXPECT_EQ(v.data(), x.data()); | |
| 192 ArrayView<const int> y; | |
| 193 y = v; | |
| 194 EXPECT_EQ(2u, y.size()); | |
| 195 EXPECT_EQ(v.data(), y.data()); | |
| 196 // ArrayView<double> d = v; // Compile error, because incompatible types. | |
| 197 const std::vector<int> cv; | |
| 198 Call<const int>(cv); | |
| 199 // Call<int>(cv); // Compile error, because can't drop const. | |
| 200 ArrayView<const int> z = cv; | |
| 201 EXPECT_EQ(0u, z.size()); | |
| 202 EXPECT_EQ(nullptr, z.data()); | |
| 203 // ArrayView<int> w = cv; // Compile error, because can't drop const. | |
| 204 } | |
| 205 | |
| 206 TEST(ArrayViewTest, TestRtcBuffer) { | |
| 207 rtc::Buffer b = "so buffer"; | |
| 208 Call<const uint8_t>(b); | |
| 209 Call<uint8_t>(b); | |
| 210 // Call<int8_t>(b); // Compile error, because incompatible types. | |
| 211 ArrayView<uint8_t> x = b; | |
| 212 EXPECT_EQ(10u, x.size()); | |
| 213 EXPECT_EQ(b.data(), x.data()); | |
| 214 ArrayView<const uint8_t> y; | |
| 215 y = b; | |
| 216 EXPECT_EQ(10u, y.size()); | |
| 217 EXPECT_EQ(b.data(), y.data()); | |
| 218 // ArrayView<char> d = b; // Compile error, because incompatible types. | |
| 219 const rtc::Buffer cb = "very const"; | |
| 220 Call<const uint8_t>(cb); | |
| 221 // Call<uint8_t>(cb); // Compile error, because can't drop const. | |
| 222 ArrayView<const uint8_t> z = cb; | |
| 223 EXPECT_EQ(11u, z.size()); | |
| 224 EXPECT_EQ(cb.data(), z.data()); | |
| 225 // ArrayView<uint8_t> w = cb; // Compile error, because can't drop const. | |
| 226 } | |
| 227 | |
| 228 TEST(ArrayViewTest, TestSwapVariable) { | |
| 229 const char arr[] = "Arrr!"; | |
| 230 const char aye[] = "Aye, Cap'n!"; | |
| 231 ArrayView<const char> x(arr); | |
| 232 EXPECT_EQ(6u, x.size()); | |
| 233 EXPECT_EQ(arr, x.data()); | |
| 234 ArrayView<const char> y(aye); | |
| 235 EXPECT_EQ(12u, y.size()); | |
| 236 EXPECT_EQ(aye, y.data()); | |
| 237 using std::swap; | |
| 238 swap(x, y); | |
| 239 EXPECT_EQ(12u, x.size()); | |
| 240 EXPECT_EQ(aye, x.data()); | |
| 241 EXPECT_EQ(6u, y.size()); | |
| 242 EXPECT_EQ(arr, y.data()); | |
| 243 // ArrayView<char> z; | |
| 244 // swap(x, z); // Compile error, because can't drop const. | |
| 245 } | |
| 246 | |
| 247 TEST(FixArrayViewTest, TestSwapFixed) { | |
| 248 const char arr[] = "Arr!"; | |
| 249 char aye[] = "Aye!"; | |
| 250 ArrayView<const char, 5> x(arr); | |
| 251 EXPECT_EQ(arr, x.data()); | |
| 252 ArrayView<const char, 5> y(aye); | |
| 253 EXPECT_EQ(aye, y.data()); | |
| 254 using std::swap; | |
| 255 swap(x, y); | |
| 256 EXPECT_EQ(aye, x.data()); | |
| 257 EXPECT_EQ(arr, y.data()); | |
| 258 // ArrayView<char, 5> z(aye); | |
| 259 // swap(x, z); // Compile error, because can't drop const. | |
| 260 // ArrayView<const char, 4> w(aye, 4); | |
| 261 // swap(x, w); // Compile error, because different sizes. | |
| 262 } | |
| 263 | |
| 264 TEST(ArrayViewTest, TestIndexing) { | |
| 265 char arr[] = "abcdefg"; | |
| 266 ArrayView<char> x(arr); | |
| 267 const ArrayView<char> y(arr); | |
| 268 ArrayView<const char, 8> z(arr); | |
| 269 EXPECT_EQ(8u, x.size()); | |
| 270 EXPECT_EQ(8u, y.size()); | |
| 271 EXPECT_EQ(8u, z.size()); | |
| 272 EXPECT_EQ('b', x[1]); | |
| 273 EXPECT_EQ('c', y[2]); | |
| 274 EXPECT_EQ('d', z[3]); | |
| 275 x[3] = 'X'; | |
| 276 y[2] = 'Y'; | |
| 277 // z[1] = 'Z'; // Compile error, because z's element type is const char. | |
| 278 EXPECT_EQ('b', x[1]); | |
| 279 EXPECT_EQ('Y', y[2]); | |
| 280 EXPECT_EQ('X', z[3]); | |
| 281 #if RTC_DCHECK_IS_ON && GTEST_HAS_DEATH_TEST && !defined(WEBRTC_ANDROID) | |
| 282 EXPECT_DEATH(z[8], ""); // DCHECK error (index out of bounds). | |
| 283 #endif | |
| 284 } | |
| 285 | |
| 286 TEST(ArrayViewTest, TestIterationEmpty) { | |
| 287 // Variable-size. | |
| 288 ArrayView<std::vector<std::vector<std::vector<std::string>>>> av; | |
| 289 EXPECT_EQ(av.begin(), av.end()); | |
| 290 EXPECT_EQ(av.cbegin(), av.cend()); | |
| 291 for (auto& e : av) { | |
| 292 EXPECT_TRUE(false); | |
| 293 EXPECT_EQ(42u, e.size()); // Dummy use of e to prevent unused var warning. | |
| 294 } | |
| 295 | |
| 296 // Fixed-size. | |
| 297 ArrayView<std::vector<std::vector<std::vector<std::string>>>, 0> af; | |
| 298 EXPECT_EQ(af.begin(), af.end()); | |
| 299 EXPECT_EQ(af.cbegin(), af.cend()); | |
| 300 for (auto& e : af) { | |
| 301 EXPECT_TRUE(false); | |
| 302 EXPECT_EQ(42u, e.size()); // Dummy use of e to prevent unused var warning. | |
| 303 } | |
| 304 } | |
| 305 | |
| 306 TEST(ArrayViewTest, TestIterationVariable) { | |
| 307 char arr[] = "Arrr!"; | |
| 308 ArrayView<char> av(arr); | |
| 309 EXPECT_EQ('A', *av.begin()); | |
| 310 EXPECT_EQ('A', *av.cbegin()); | |
| 311 EXPECT_EQ('\0', *(av.end() - 1)); | |
| 312 EXPECT_EQ('\0', *(av.cend() - 1)); | |
| 313 char i = 0; | |
| 314 for (auto& e : av) { | |
| 315 EXPECT_EQ(arr + i, &e); | |
| 316 e = 's' + i; | |
| 317 ++i; | |
| 318 } | |
| 319 i = 0; | |
| 320 for (auto& e : ArrayView<const char>(av)) { | |
| 321 EXPECT_EQ(arr + i, &e); | |
| 322 // e = 'q' + i; // Compile error, because e is a const char&. | |
| 323 ++i; | |
| 324 } | |
| 325 } | |
| 326 | |
| 327 TEST(ArrayViewTest, TestIterationFixed) { | |
| 328 char arr[] = "Arrr!"; | |
| 329 ArrayView<char, 6> av(arr); | |
| 330 EXPECT_EQ('A', *av.begin()); | |
| 331 EXPECT_EQ('A', *av.cbegin()); | |
| 332 EXPECT_EQ('\0', *(av.end() - 1)); | |
| 333 EXPECT_EQ('\0', *(av.cend() - 1)); | |
| 334 char i = 0; | |
| 335 for (auto& e : av) { | |
| 336 EXPECT_EQ(arr + i, &e); | |
| 337 e = 's' + i; | |
| 338 ++i; | |
| 339 } | |
| 340 i = 0; | |
| 341 for (auto& e : ArrayView<const char, 6>(av)) { | |
| 342 EXPECT_EQ(arr + i, &e); | |
| 343 // e = 'q' + i; // Compile error, because e is a const char&. | |
| 344 ++i; | |
| 345 } | |
| 346 } | |
| 347 | |
| 348 TEST(ArrayViewTest, TestEmpty) { | |
| 349 EXPECT_TRUE(ArrayView<int>().empty()); | |
| 350 const int a[] = {1, 2, 3}; | |
| 351 EXPECT_FALSE(ArrayView<const int>(a).empty()); | |
| 352 | |
| 353 static_assert(ArrayView<int, 0>::empty(), ""); | |
| 354 static_assert(!ArrayView<int, 3>::empty(), ""); | |
| 355 } | |
| 356 | |
| 357 TEST(ArrayViewTest, TestCompare) { | |
| 358 int a[] = {1, 2, 3}; | |
| 359 int b[] = {1, 2, 3}; | |
| 360 | |
| 361 EXPECT_EQ(ArrayView<int>(a), ArrayView<int>(a)); | |
| 362 EXPECT_EQ((ArrayView<int, 3>(a)), (ArrayView<int, 3>(a))); | |
| 363 EXPECT_EQ(ArrayView<int>(a), (ArrayView<int, 3>(a))); | |
| 364 EXPECT_EQ(ArrayView<int>(), ArrayView<int>()); | |
| 365 EXPECT_EQ(ArrayView<int>(), ArrayView<int>(a, 0)); | |
| 366 EXPECT_EQ(ArrayView<int>(a, 0), ArrayView<int>(b, 0)); | |
| 367 EXPECT_EQ((ArrayView<int, 0>(a, 0)), ArrayView<int>()); | |
| 368 | |
| 369 EXPECT_NE(ArrayView<int>(a), ArrayView<int>(b)); | |
| 370 EXPECT_NE((ArrayView<int, 3>(a)), (ArrayView<int, 3>(b))); | |
| 371 EXPECT_NE((ArrayView<int, 3>(a)), ArrayView<int>(b)); | |
| 372 EXPECT_NE(ArrayView<int>(a), ArrayView<int>()); | |
| 373 EXPECT_NE(ArrayView<int>(a), ArrayView<int>(a, 2)); | |
| 374 EXPECT_NE((ArrayView<int, 3>(a)), (ArrayView<int, 2>(a, 2))); | |
| 375 } | |
| 376 | |
| 377 TEST(ArrayViewTest, TestSubViewVariable) { | |
| 378 int a[] = {1, 2, 3}; | |
| 379 ArrayView<int> av(a); | |
| 380 | |
| 381 EXPECT_EQ(av.subview(0), av); | |
| 382 | |
| 383 EXPECT_THAT(av.subview(1), ElementsAre(2, 3)); | |
| 384 EXPECT_THAT(av.subview(2), ElementsAre(3)); | |
| 385 EXPECT_THAT(av.subview(3), IsEmpty()); | |
| 386 EXPECT_THAT(av.subview(4), IsEmpty()); | |
| 387 | |
| 388 EXPECT_THAT(av.subview(1, 0), IsEmpty()); | |
| 389 EXPECT_THAT(av.subview(1, 1), ElementsAre(2)); | |
| 390 EXPECT_THAT(av.subview(1, 2), ElementsAre(2, 3)); | |
| 391 EXPECT_THAT(av.subview(1, 3), ElementsAre(2, 3)); | |
| 392 } | |
| 393 | |
| 394 TEST(ArrayViewTest, TestSubViewFixed) { | |
| 395 int a[] = {1, 2, 3}; | |
| 396 ArrayView<int, 3> av(a); | |
| 397 | |
| 398 EXPECT_EQ(av.subview(0), av); | |
| 399 | |
| 400 EXPECT_THAT(av.subview(1), ElementsAre(2, 3)); | |
| 401 EXPECT_THAT(av.subview(2), ElementsAre(3)); | |
| 402 EXPECT_THAT(av.subview(3), IsEmpty()); | |
| 403 EXPECT_THAT(av.subview(4), IsEmpty()); | |
| 404 | |
| 405 EXPECT_THAT(av.subview(1, 0), IsEmpty()); | |
| 406 EXPECT_THAT(av.subview(1, 1), ElementsAre(2)); | |
| 407 EXPECT_THAT(av.subview(1, 2), ElementsAre(2, 3)); | |
| 408 EXPECT_THAT(av.subview(1, 3), ElementsAre(2, 3)); | |
| 409 } | |
| 410 | |
| 411 } // namespace rtc | |
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Chromium Code Reviews
Issue 3007763002:
Move array_view.h to webrtc/api/ (Closed)
