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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/memory/scoped_ptr.h" | |
| 6 | |
| 7 #include <sstream> | |
| 8 | |
| 9 #include "base/basictypes.h" | |
| 10 #include "base/bind.h" | |
| 11 #include "base/callback.h" | |
| 12 #include "testing/gtest/include/gtest/gtest.h" | |
| 13 | |
| 14 namespace { | |
| 15 | |
| 16 // Used to test depth subtyping. | |
| 17 class ConDecLoggerParent { | |
| 18 public: | |
| 19 virtual ~ConDecLoggerParent() {} | |
| 20 | |
| 21 virtual void SetPtr(int* ptr) = 0; | |
| 22 | |
| 23 virtual int SomeMeth(int x) const = 0; | |
| 24 }; | |
| 25 | |
| 26 class ConDecLogger : public ConDecLoggerParent { | |
| 27 public: | |
| 28 ConDecLogger() : ptr_(NULL) { } | |
| 29 explicit ConDecLogger(int* ptr) { SetPtr(ptr); } | |
| 30 ~ConDecLogger() override { --*ptr_; } | |
| 31 | |
| 32 void SetPtr(int* ptr) override { | |
| 33 ptr_ = ptr; | |
| 34 ++*ptr_; | |
| 35 } | |
| 36 | |
| 37 int SomeMeth(int x) const override { return x; } | |
| 38 | |
| 39 private: | |
| 40 int* ptr_; | |
| 41 | |
| 42 DISALLOW_COPY_AND_ASSIGN(ConDecLogger); | |
| 43 }; | |
| 44 | |
| 45 struct CountingDeleter { | |
| 46 explicit CountingDeleter(int* count) : count_(count) {} | |
| 47 inline void operator()(double* ptr) const { | |
| 48 (*count_)++; | |
| 49 } | |
| 50 int* count_; | |
| 51 }; | |
| 52 | |
| 53 // Used to test assignment of convertible deleters. | |
| 54 struct CountingDeleterChild : public CountingDeleter { | |
| 55 explicit CountingDeleterChild(int* count) : CountingDeleter(count) {} | |
| 56 }; | |
| 57 | |
| 58 class OverloadedNewAndDelete { | |
| 59 public: | |
| 60 void* operator new(size_t size) { | |
| 61 g_new_count++; | |
| 62 return malloc(size); | |
| 63 } | |
| 64 | |
| 65 void operator delete(void* ptr) { | |
| 66 g_delete_count++; | |
| 67 free(ptr); | |
| 68 } | |
| 69 | |
| 70 static void ResetCounters() { | |
| 71 g_new_count = 0; | |
| 72 g_delete_count = 0; | |
| 73 } | |
| 74 | |
| 75 static int new_count() { return g_new_count; } | |
| 76 static int delete_count() { return g_delete_count; } | |
| 77 | |
| 78 private: | |
| 79 static int g_new_count; | |
| 80 static int g_delete_count; | |
| 81 }; | |
| 82 | |
| 83 int OverloadedNewAndDelete::g_new_count = 0; | |
| 84 int OverloadedNewAndDelete::g_delete_count = 0; | |
| 85 | |
| 86 scoped_ptr<ConDecLogger> PassThru(scoped_ptr<ConDecLogger> logger) { | |
| 87 return logger.Pass(); | |
| 88 } | |
| 89 | |
| 90 void GrabAndDrop(scoped_ptr<ConDecLogger> logger) { | |
| 91 } | |
| 92 | |
| 93 // Do not delete this function! It's existence is to test that you can | |
| 94 // return a temporarily constructed version of the scoper. | |
| 95 scoped_ptr<ConDecLogger> TestReturnOfType(int* constructed) { | |
| 96 return scoped_ptr<ConDecLogger>(new ConDecLogger(constructed)); | |
| 97 } | |
| 98 | |
| 99 } // namespace | |
| 100 | |
| 101 TEST(ScopedPtrTest, ScopedPtr) { | |
| 102 int constructed = 0; | |
| 103 | |
| 104 // Ensure size of scoped_ptr<> doesn't increase unexpectedly. | |
| 105 COMPILE_ASSERT(sizeof(int*) >= sizeof(scoped_ptr<int>), | |
| 106 scoped_ptr_larger_than_raw_ptr); | |
| 107 | |
| 108 { | |
| 109 scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed)); | |
| 110 EXPECT_EQ(1, constructed); | |
| 111 EXPECT_TRUE(scoper.get()); | |
| 112 | |
| 113 EXPECT_EQ(10, scoper->SomeMeth(10)); | |
| 114 EXPECT_EQ(10, scoper.get()->SomeMeth(10)); | |
| 115 EXPECT_EQ(10, (*scoper).SomeMeth(10)); | |
| 116 } | |
| 117 EXPECT_EQ(0, constructed); | |
| 118 | |
| 119 // Test reset() and release() | |
| 120 { | |
| 121 scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed)); | |
| 122 EXPECT_EQ(1, constructed); | |
| 123 EXPECT_TRUE(scoper.get()); | |
| 124 | |
| 125 scoper.reset(new ConDecLogger(&constructed)); | |
| 126 EXPECT_EQ(1, constructed); | |
| 127 EXPECT_TRUE(scoper.get()); | |
| 128 | |
| 129 scoper.reset(); | |
| 130 EXPECT_EQ(0, constructed); | |
| 131 EXPECT_FALSE(scoper.get()); | |
| 132 | |
| 133 scoper.reset(new ConDecLogger(&constructed)); | |
| 134 EXPECT_EQ(1, constructed); | |
| 135 EXPECT_TRUE(scoper.get()); | |
| 136 | |
| 137 ConDecLogger* take = scoper.release(); | |
| 138 EXPECT_EQ(1, constructed); | |
| 139 EXPECT_FALSE(scoper.get()); | |
| 140 delete take; | |
| 141 EXPECT_EQ(0, constructed); | |
| 142 | |
| 143 scoper.reset(new ConDecLogger(&constructed)); | |
| 144 EXPECT_EQ(1, constructed); | |
| 145 EXPECT_TRUE(scoper.get()); | |
| 146 } | |
| 147 EXPECT_EQ(0, constructed); | |
| 148 | |
| 149 // Test swap(), == and != | |
| 150 { | |
| 151 scoped_ptr<ConDecLogger> scoper1; | |
| 152 scoped_ptr<ConDecLogger> scoper2; | |
| 153 EXPECT_TRUE(scoper1 == scoper2.get()); | |
| 154 EXPECT_FALSE(scoper1 != scoper2.get()); | |
| 155 | |
| 156 ConDecLogger* logger = new ConDecLogger(&constructed); | |
| 157 scoper1.reset(logger); | |
| 158 EXPECT_EQ(logger, scoper1.get()); | |
| 159 EXPECT_FALSE(scoper2.get()); | |
| 160 EXPECT_FALSE(scoper1 == scoper2.get()); | |
| 161 EXPECT_TRUE(scoper1 != scoper2.get()); | |
| 162 | |
| 163 scoper2.swap(scoper1); | |
| 164 EXPECT_EQ(logger, scoper2.get()); | |
| 165 EXPECT_FALSE(scoper1.get()); | |
| 166 EXPECT_FALSE(scoper1 == scoper2.get()); | |
| 167 EXPECT_TRUE(scoper1 != scoper2.get()); | |
| 168 } | |
| 169 EXPECT_EQ(0, constructed); | |
| 170 } | |
| 171 | |
| 172 TEST(ScopedPtrTest, ScopedPtrDepthSubtyping) { | |
| 173 int constructed = 0; | |
| 174 | |
| 175 // Test construction from a scoped_ptr to a derived class. | |
| 176 { | |
| 177 scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed)); | |
| 178 EXPECT_EQ(1, constructed); | |
| 179 EXPECT_TRUE(scoper.get()); | |
| 180 | |
| 181 scoped_ptr<ConDecLoggerParent> scoper_parent(scoper.Pass()); | |
| 182 EXPECT_EQ(1, constructed); | |
| 183 EXPECT_TRUE(scoper_parent.get()); | |
| 184 EXPECT_FALSE(scoper.get()); | |
| 185 | |
| 186 EXPECT_EQ(10, scoper_parent->SomeMeth(10)); | |
| 187 EXPECT_EQ(10, scoper_parent.get()->SomeMeth(10)); | |
| 188 EXPECT_EQ(10, (*scoper_parent).SomeMeth(10)); | |
| 189 } | |
| 190 EXPECT_EQ(0, constructed); | |
| 191 | |
| 192 // Test assignment from a scoped_ptr to a derived class. | |
| 193 { | |
| 194 scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed)); | |
| 195 EXPECT_EQ(1, constructed); | |
| 196 EXPECT_TRUE(scoper.get()); | |
| 197 | |
| 198 scoped_ptr<ConDecLoggerParent> scoper_parent; | |
| 199 scoper_parent = scoper.Pass(); | |
| 200 EXPECT_EQ(1, constructed); | |
| 201 EXPECT_TRUE(scoper_parent.get()); | |
| 202 EXPECT_FALSE(scoper.get()); | |
| 203 } | |
| 204 EXPECT_EQ(0, constructed); | |
| 205 | |
| 206 // Test construction of a scoped_ptr with an additional const annotation. | |
| 207 { | |
| 208 scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed)); | |
| 209 EXPECT_EQ(1, constructed); | |
| 210 EXPECT_TRUE(scoper.get()); | |
| 211 | |
| 212 scoped_ptr<const ConDecLogger> scoper_const(scoper.Pass()); | |
| 213 EXPECT_EQ(1, constructed); | |
| 214 EXPECT_TRUE(scoper_const.get()); | |
| 215 EXPECT_FALSE(scoper.get()); | |
| 216 | |
| 217 EXPECT_EQ(10, scoper_const->SomeMeth(10)); | |
| 218 EXPECT_EQ(10, scoper_const.get()->SomeMeth(10)); | |
| 219 EXPECT_EQ(10, (*scoper_const).SomeMeth(10)); | |
| 220 } | |
| 221 EXPECT_EQ(0, constructed); | |
| 222 | |
| 223 // Test assignment to a scoped_ptr with an additional const annotation. | |
| 224 { | |
| 225 scoped_ptr<ConDecLogger> scoper(new ConDecLogger(&constructed)); | |
| 226 EXPECT_EQ(1, constructed); | |
| 227 EXPECT_TRUE(scoper.get()); | |
| 228 | |
| 229 scoped_ptr<const ConDecLogger> scoper_const; | |
| 230 scoper_const = scoper.Pass(); | |
| 231 EXPECT_EQ(1, constructed); | |
| 232 EXPECT_TRUE(scoper_const.get()); | |
| 233 EXPECT_FALSE(scoper.get()); | |
| 234 } | |
| 235 EXPECT_EQ(0, constructed); | |
| 236 | |
| 237 // Test assignment to a scoped_ptr deleter of parent type. | |
| 238 { | |
| 239 // Custom deleters never touch these value. | |
| 240 double dummy_value, dummy_value2; | |
| 241 int deletes = 0; | |
| 242 int alternate_deletes = 0; | |
| 243 scoped_ptr<double, CountingDeleter> scoper(&dummy_value, | |
| 244 CountingDeleter(&deletes)); | |
| 245 scoped_ptr<double, CountingDeleterChild> scoper_child( | |
| 246 &dummy_value2, CountingDeleterChild(&alternate_deletes)); | |
| 247 | |
| 248 EXPECT_TRUE(scoper); | |
| 249 EXPECT_TRUE(scoper_child); | |
| 250 EXPECT_EQ(0, deletes); | |
| 251 EXPECT_EQ(0, alternate_deletes); | |
| 252 | |
| 253 // Test this compiles and correctly overwrites the deleter state. | |
| 254 scoper = scoper_child.Pass(); | |
| 255 EXPECT_TRUE(scoper); | |
| 256 EXPECT_FALSE(scoper_child); | |
| 257 EXPECT_EQ(1, deletes); | |
| 258 EXPECT_EQ(0, alternate_deletes); | |
| 259 | |
| 260 scoper.reset(); | |
| 261 EXPECT_FALSE(scoper); | |
| 262 EXPECT_FALSE(scoper_child); | |
| 263 EXPECT_EQ(1, deletes); | |
| 264 EXPECT_EQ(1, alternate_deletes); | |
| 265 | |
| 266 scoper_child.reset(&dummy_value); | |
| 267 EXPECT_TRUE(scoper_child); | |
| 268 EXPECT_EQ(1, deletes); | |
| 269 EXPECT_EQ(1, alternate_deletes); | |
| 270 scoped_ptr<double, CountingDeleter> scoper_construct(scoper_child.Pass()); | |
| 271 EXPECT_TRUE(scoper_construct); | |
| 272 EXPECT_FALSE(scoper_child); | |
| 273 EXPECT_EQ(1, deletes); | |
| 274 EXPECT_EQ(1, alternate_deletes); | |
| 275 | |
| 276 scoper_construct.reset(); | |
| 277 EXPECT_EQ(1, deletes); | |
| 278 EXPECT_EQ(2, alternate_deletes); | |
| 279 } | |
| 280 } | |
| 281 | |
| 282 TEST(ScopedPtrTest, ScopedPtrWithArray) { | |
| 283 static const int kNumLoggers = 12; | |
| 284 | |
| 285 int constructed = 0; | |
| 286 | |
| 287 { | |
| 288 scoped_ptr<ConDecLogger[]> scoper(new ConDecLogger[kNumLoggers]); | |
| 289 EXPECT_TRUE(scoper); | |
| 290 EXPECT_EQ(&scoper[0], scoper.get()); | |
| 291 for (int i = 0; i < kNumLoggers; ++i) { | |
| 292 scoper[i].SetPtr(&constructed); | |
| 293 } | |
| 294 EXPECT_EQ(12, constructed); | |
| 295 | |
| 296 EXPECT_EQ(10, scoper.get()->SomeMeth(10)); | |
| 297 EXPECT_EQ(10, scoper[2].SomeMeth(10)); | |
| 298 } | |
| 299 EXPECT_EQ(0, constructed); | |
| 300 | |
| 301 // Test reset() and release() | |
| 302 { | |
| 303 scoped_ptr<ConDecLogger[]> scoper; | |
| 304 EXPECT_FALSE(scoper.get()); | |
| 305 EXPECT_FALSE(scoper.release()); | |
| 306 EXPECT_FALSE(scoper.get()); | |
| 307 scoper.reset(); | |
| 308 EXPECT_FALSE(scoper.get()); | |
| 309 | |
| 310 scoper.reset(new ConDecLogger[kNumLoggers]); | |
| 311 for (int i = 0; i < kNumLoggers; ++i) { | |
| 312 scoper[i].SetPtr(&constructed); | |
| 313 } | |
| 314 EXPECT_EQ(12, constructed); | |
| 315 scoper.reset(); | |
| 316 EXPECT_EQ(0, constructed); | |
| 317 | |
| 318 scoper.reset(new ConDecLogger[kNumLoggers]); | |
| 319 for (int i = 0; i < kNumLoggers; ++i) { | |
| 320 scoper[i].SetPtr(&constructed); | |
| 321 } | |
| 322 EXPECT_EQ(12, constructed); | |
| 323 ConDecLogger* ptr = scoper.release(); | |
| 324 EXPECT_EQ(12, constructed); | |
| 325 delete[] ptr; | |
| 326 EXPECT_EQ(0, constructed); | |
| 327 } | |
| 328 EXPECT_EQ(0, constructed); | |
| 329 | |
| 330 // Test swap(), ==, !=, and type-safe Boolean. | |
| 331 { | |
| 332 scoped_ptr<ConDecLogger[]> scoper1; | |
| 333 scoped_ptr<ConDecLogger[]> scoper2; | |
| 334 EXPECT_TRUE(scoper1 == scoper2.get()); | |
| 335 EXPECT_FALSE(scoper1 != scoper2.get()); | |
| 336 | |
| 337 ConDecLogger* loggers = new ConDecLogger[kNumLoggers]; | |
| 338 for (int i = 0; i < kNumLoggers; ++i) { | |
| 339 loggers[i].SetPtr(&constructed); | |
| 340 } | |
| 341 scoper1.reset(loggers); | |
| 342 EXPECT_TRUE(scoper1); | |
| 343 EXPECT_EQ(loggers, scoper1.get()); | |
| 344 EXPECT_FALSE(scoper2); | |
| 345 EXPECT_FALSE(scoper2.get()); | |
| 346 EXPECT_FALSE(scoper1 == scoper2.get()); | |
| 347 EXPECT_TRUE(scoper1 != scoper2.get()); | |
| 348 | |
| 349 scoper2.swap(scoper1); | |
| 350 EXPECT_EQ(loggers, scoper2.get()); | |
| 351 EXPECT_FALSE(scoper1.get()); | |
| 352 EXPECT_FALSE(scoper1 == scoper2.get()); | |
| 353 EXPECT_TRUE(scoper1 != scoper2.get()); | |
| 354 } | |
| 355 EXPECT_EQ(0, constructed); | |
| 356 | |
| 357 { | |
| 358 ConDecLogger* loggers = new ConDecLogger[kNumLoggers]; | |
| 359 scoped_ptr<ConDecLogger[]> scoper(loggers); | |
| 360 EXPECT_TRUE(scoper); | |
| 361 for (int i = 0; i < kNumLoggers; ++i) { | |
| 362 scoper[i].SetPtr(&constructed); | |
| 363 } | |
| 364 EXPECT_EQ(kNumLoggers, constructed); | |
| 365 | |
| 366 // Test Pass() with constructor; | |
| 367 scoped_ptr<ConDecLogger[]> scoper2(scoper.Pass()); | |
| 368 EXPECT_EQ(kNumLoggers, constructed); | |
| 369 | |
| 370 // Test Pass() with assignment; | |
| 371 scoped_ptr<ConDecLogger[]> scoper3; | |
| 372 scoper3 = scoper2.Pass(); | |
| 373 EXPECT_EQ(kNumLoggers, constructed); | |
| 374 EXPECT_FALSE(scoper); | |
| 375 EXPECT_FALSE(scoper2); | |
| 376 EXPECT_TRUE(scoper3); | |
| 377 } | |
| 378 EXPECT_EQ(0, constructed); | |
| 379 } | |
| 380 | |
| 381 TEST(ScopedPtrTest, PassBehavior) { | |
| 382 int constructed = 0; | |
| 383 { | |
| 384 ConDecLogger* logger = new ConDecLogger(&constructed); | |
| 385 scoped_ptr<ConDecLogger> scoper(logger); | |
| 386 EXPECT_EQ(1, constructed); | |
| 387 | |
| 388 // Test Pass() with constructor; | |
| 389 scoped_ptr<ConDecLogger> scoper2(scoper.Pass()); | |
| 390 EXPECT_EQ(1, constructed); | |
| 391 | |
| 392 // Test Pass() with assignment; | |
| 393 scoped_ptr<ConDecLogger> scoper3; | |
| 394 scoper3 = scoper2.Pass(); | |
| 395 EXPECT_EQ(1, constructed); | |
| 396 EXPECT_FALSE(scoper.get()); | |
| 397 EXPECT_FALSE(scoper2.get()); | |
| 398 EXPECT_TRUE(scoper3.get()); | |
| 399 } | |
| 400 | |
| 401 // Test uncaught Pass() does not have side effects. | |
| 402 { | |
| 403 ConDecLogger* logger = new ConDecLogger(&constructed); | |
| 404 scoped_ptr<ConDecLogger> scoper(logger); | |
| 405 EXPECT_EQ(1, constructed); | |
| 406 | |
| 407 // Should auto-destruct logger by end of scope. | |
| 408 scoped_ptr<ConDecLogger>&& rvalue = scoper.Pass(); | |
| 409 // The Pass() function mimics std::move(), which does not have side-effects. | |
| 410 EXPECT_TRUE(scoper.get()); | |
| 411 EXPECT_TRUE(rvalue); | |
| 412 } | |
| 413 EXPECT_EQ(0, constructed); | |
| 414 | |
| 415 // Test that passing to function which does nothing does not leak. | |
| 416 { | |
| 417 ConDecLogger* logger = new ConDecLogger(&constructed); | |
| 418 scoped_ptr<ConDecLogger> scoper(logger); | |
| 419 EXPECT_EQ(1, constructed); | |
| 420 | |
| 421 // Should auto-destruct logger by end of scope. | |
| 422 GrabAndDrop(scoper.Pass()); | |
| 423 EXPECT_FALSE(scoper.get()); | |
| 424 } | |
| 425 EXPECT_EQ(0, constructed); | |
| 426 } | |
| 427 | |
| 428 TEST(ScopedPtrTest, ReturnTypeBehavior) { | |
| 429 int constructed = 0; | |
| 430 | |
| 431 // Test that we can return a scoped_ptr. | |
| 432 { | |
| 433 ConDecLogger* logger = new ConDecLogger(&constructed); | |
| 434 scoped_ptr<ConDecLogger> scoper(logger); | |
| 435 EXPECT_EQ(1, constructed); | |
| 436 | |
| 437 PassThru(scoper.Pass()); | |
| 438 EXPECT_FALSE(scoper.get()); | |
| 439 } | |
| 440 EXPECT_EQ(0, constructed); | |
| 441 | |
| 442 // Test uncaught return type not leak. | |
| 443 { | |
| 444 ConDecLogger* logger = new ConDecLogger(&constructed); | |
| 445 scoped_ptr<ConDecLogger> scoper(logger); | |
| 446 EXPECT_EQ(1, constructed); | |
| 447 | |
| 448 // Should auto-destruct logger by end of scope. | |
| 449 PassThru(scoper.Pass()); | |
| 450 EXPECT_FALSE(scoper.get()); | |
| 451 } | |
| 452 EXPECT_EQ(0, constructed); | |
| 453 | |
| 454 // Call TestReturnOfType() so the compiler doesn't warn for an unused | |
| 455 // function. | |
| 456 { | |
| 457 TestReturnOfType(&constructed); | |
| 458 } | |
| 459 EXPECT_EQ(0, constructed); | |
| 460 } | |
| 461 | |
| 462 TEST(ScopedPtrTest, CustomDeleter) { | |
| 463 double dummy_value; // Custom deleter never touches this value. | |
| 464 int deletes = 0; | |
| 465 int alternate_deletes = 0; | |
| 466 | |
| 467 // Normal delete support. | |
| 468 { | |
| 469 deletes = 0; | |
| 470 scoped_ptr<double, CountingDeleter> scoper(&dummy_value, | |
| 471 CountingDeleter(&deletes)); | |
| 472 EXPECT_EQ(0, deletes); | |
| 473 EXPECT_TRUE(scoper.get()); | |
| 474 } | |
| 475 EXPECT_EQ(1, deletes); | |
| 476 | |
| 477 // Test reset() and release(). | |
| 478 deletes = 0; | |
| 479 { | |
| 480 scoped_ptr<double, CountingDeleter> scoper(NULL, | |
| 481 CountingDeleter(&deletes)); | |
| 482 EXPECT_FALSE(scoper.get()); | |
| 483 EXPECT_FALSE(scoper.release()); | |
| 484 EXPECT_FALSE(scoper.get()); | |
| 485 scoper.reset(); | |
| 486 EXPECT_FALSE(scoper.get()); | |
| 487 EXPECT_EQ(0, deletes); | |
| 488 | |
| 489 scoper.reset(&dummy_value); | |
| 490 scoper.reset(); | |
| 491 EXPECT_EQ(1, deletes); | |
| 492 | |
| 493 scoper.reset(&dummy_value); | |
| 494 EXPECT_EQ(&dummy_value, scoper.release()); | |
| 495 } | |
| 496 EXPECT_EQ(1, deletes); | |
| 497 | |
| 498 // Test get_deleter(). | |
| 499 deletes = 0; | |
| 500 alternate_deletes = 0; | |
| 501 { | |
| 502 scoped_ptr<double, CountingDeleter> scoper(&dummy_value, | |
| 503 CountingDeleter(&deletes)); | |
| 504 // Call deleter manually. | |
| 505 EXPECT_EQ(0, deletes); | |
| 506 scoper.get_deleter()(&dummy_value); | |
| 507 EXPECT_EQ(1, deletes); | |
| 508 | |
| 509 // Deleter is still there after reset. | |
| 510 scoper.reset(); | |
| 511 EXPECT_EQ(2, deletes); | |
| 512 scoper.get_deleter()(&dummy_value); | |
| 513 EXPECT_EQ(3, deletes); | |
| 514 | |
| 515 // Deleter can be assigned into (matches C++11 unique_ptr<> spec). | |
| 516 scoper.get_deleter() = CountingDeleter(&alternate_deletes); | |
| 517 scoper.reset(&dummy_value); | |
| 518 EXPECT_EQ(0, alternate_deletes); | |
| 519 | |
| 520 } | |
| 521 EXPECT_EQ(3, deletes); | |
| 522 EXPECT_EQ(1, alternate_deletes); | |
| 523 | |
| 524 // Test operator= deleter support. | |
| 525 deletes = 0; | |
| 526 alternate_deletes = 0; | |
| 527 { | |
| 528 double dummy_value2; | |
| 529 scoped_ptr<double, CountingDeleter> scoper(&dummy_value, | |
| 530 CountingDeleter(&deletes)); | |
| 531 scoped_ptr<double, CountingDeleter> scoper2( | |
| 532 &dummy_value2, | |
| 533 CountingDeleter(&alternate_deletes)); | |
| 534 EXPECT_EQ(0, deletes); | |
| 535 EXPECT_EQ(0, alternate_deletes); | |
| 536 | |
| 537 // Pass the second deleter through a constructor and an operator=. Then | |
| 538 // reinitialize the empty scopers to ensure that each one is deleting | |
| 539 // properly. | |
| 540 scoped_ptr<double, CountingDeleter> scoper3(scoper2.Pass()); | |
| 541 scoper = scoper3.Pass(); | |
| 542 EXPECT_EQ(1, deletes); | |
| 543 | |
| 544 scoper2.reset(&dummy_value2); | |
| 545 scoper3.reset(&dummy_value2); | |
| 546 EXPECT_EQ(0, alternate_deletes); | |
| 547 | |
| 548 } | |
| 549 EXPECT_EQ(1, deletes); | |
| 550 EXPECT_EQ(3, alternate_deletes); | |
| 551 | |
| 552 // Test swap(), ==, !=, and type-safe Boolean. | |
| 553 { | |
| 554 scoped_ptr<double, CountingDeleter> scoper1(NULL, | |
| 555 CountingDeleter(&deletes)); | |
| 556 scoped_ptr<double, CountingDeleter> scoper2(NULL, | |
| 557 CountingDeleter(&deletes)); | |
| 558 EXPECT_TRUE(scoper1 == scoper2.get()); | |
| 559 EXPECT_FALSE(scoper1 != scoper2.get()); | |
| 560 | |
| 561 scoper1.reset(&dummy_value); | |
| 562 EXPECT_TRUE(scoper1); | |
| 563 EXPECT_EQ(&dummy_value, scoper1.get()); | |
| 564 EXPECT_FALSE(scoper2); | |
| 565 EXPECT_FALSE(scoper2.get()); | |
| 566 EXPECT_FALSE(scoper1 == scoper2.get()); | |
| 567 EXPECT_TRUE(scoper1 != scoper2.get()); | |
| 568 | |
| 569 scoper2.swap(scoper1); | |
| 570 EXPECT_EQ(&dummy_value, scoper2.get()); | |
| 571 EXPECT_FALSE(scoper1.get()); | |
| 572 EXPECT_FALSE(scoper1 == scoper2.get()); | |
| 573 EXPECT_TRUE(scoper1 != scoper2.get()); | |
| 574 } | |
| 575 } | |
| 576 | |
| 577 // Sanity check test for overloaded new and delete operators. Does not do full | |
| 578 // coverage of reset/release/Pass() operations as that is redundant with the | |
| 579 // above. | |
| 580 TEST(ScopedPtrTest, OverloadedNewAndDelete) { | |
| 581 { | |
| 582 OverloadedNewAndDelete::ResetCounters(); | |
| 583 scoped_ptr<OverloadedNewAndDelete> scoper(new OverloadedNewAndDelete()); | |
| 584 EXPECT_TRUE(scoper.get()); | |
| 585 | |
| 586 scoped_ptr<OverloadedNewAndDelete> scoper2(scoper.Pass()); | |
| 587 } | |
| 588 EXPECT_EQ(1, OverloadedNewAndDelete::delete_count()); | |
| 589 EXPECT_EQ(1, OverloadedNewAndDelete::new_count()); | |
| 590 } | |
| 591 | |
| 592 scoped_ptr<int> NullIntReturn() { | |
| 593 return nullptr; | |
| 594 } | |
| 595 | |
| 596 TEST(ScopedPtrTest, Nullptr) { | |
| 597 scoped_ptr<int> scoper1(nullptr); | |
| 598 scoped_ptr<int> scoper2(new int); | |
| 599 scoper2 = nullptr; | |
| 600 scoped_ptr<int> scoper3(NullIntReturn()); | |
| 601 scoped_ptr<int> scoper4 = NullIntReturn(); | |
| 602 EXPECT_EQ(nullptr, scoper1.get()); | |
| 603 EXPECT_EQ(nullptr, scoper2.get()); | |
| 604 EXPECT_EQ(nullptr, scoper3.get()); | |
| 605 EXPECT_EQ(nullptr, scoper4.get()); | |
| 606 } | |
| 607 | |
| 608 scoped_ptr<int[]> NullIntArrayReturn() { | |
| 609 return nullptr; | |
| 610 } | |
| 611 | |
| 612 TEST(ScopedPtrTest, NullptrArray) { | |
| 613 scoped_ptr<int[]> scoper1(nullptr); | |
| 614 scoped_ptr<int[]> scoper2(new int[3]); | |
| 615 scoper2 = nullptr; | |
| 616 scoped_ptr<int[]> scoper3(NullIntArrayReturn()); | |
| 617 scoped_ptr<int[]> scoper4 = NullIntArrayReturn(); | |
| 618 EXPECT_EQ(nullptr, scoper1.get()); | |
| 619 EXPECT_EQ(nullptr, scoper2.get()); | |
| 620 EXPECT_EQ(nullptr, scoper3.get()); | |
| 621 EXPECT_EQ(nullptr, scoper4.get()); | |
| 622 } | |
| 623 | |
| 624 class Super {}; | |
| 625 class Sub : public Super {}; | |
| 626 | |
| 627 scoped_ptr<Sub> SubClassReturn() { | |
| 628 return make_scoped_ptr(new Sub); | |
| 629 } | |
| 630 | |
| 631 TEST(ScopedPtrTest, Conversion) { | |
| 632 scoped_ptr<Sub> sub1(new Sub); | |
| 633 scoped_ptr<Sub> sub2(new Sub); | |
| 634 | |
| 635 // Upcast with Pass() works. | |
| 636 scoped_ptr<Super> super1 = sub1.Pass(); | |
| 637 super1 = sub2.Pass(); | |
| 638 | |
| 639 // Upcast with an rvalue works. | |
| 640 scoped_ptr<Super> super2 = SubClassReturn(); | |
| 641 super2 = SubClassReturn(); | |
| 642 } | |
| 643 | |
| 644 // Android death tests don't work properly with assert(). Yay. | |
| 645 #if !defined(NDEBUG) && defined(GTEST_HAS_DEATH_TEST) && !defined(OS_ANDROID) | |
| 646 TEST(ScopedPtrTest, SelfResetAbortsWithDefaultDeleter) { | |
| 647 scoped_ptr<int> x(new int); | |
| 648 EXPECT_DEATH(x.reset(x.get()), ""); | |
| 649 } | |
| 650 | |
| 651 TEST(ScopedPtrTest, SelfResetAbortsWithDefaultArrayDeleter) { | |
| 652 scoped_ptr<int[]> y(new int[4]); | |
| 653 EXPECT_DEATH(y.reset(y.get()), ""); | |
| 654 } | |
| 655 | |
| 656 TEST(ScopedPtrTest, SelfResetAbortsWithDefaultFreeDeleter) { | |
| 657 scoped_ptr<int, base::FreeDeleter> z(static_cast<int*>(malloc(sizeof(int)))); | |
| 658 EXPECT_DEATH(z.reset(z.get()), ""); | |
| 659 } | |
| 660 | |
| 661 // A custom deleter that doesn't opt out should still crash. | |
| 662 TEST(ScopedPtrTest, SelfResetAbortsWithCustomDeleter) { | |
| 663 struct CustomDeleter { | |
| 664 inline void operator()(int* x) { delete x; } | |
| 665 }; | |
| 666 scoped_ptr<int, CustomDeleter> x(new int); | |
| 667 EXPECT_DEATH(x.reset(x.get()), ""); | |
| 668 } | |
| 669 #endif | |
| 670 | |
| 671 TEST(ScopedPtrTest, SelfResetWithCustomDeleterOptOut) { | |
| 672 // A custom deleter should be able to opt out of self-reset abort behavior. | |
| 673 struct NoOpDeleter { | |
| 674 #if !defined(NDEBUG) | |
| 675 typedef void AllowSelfReset; | |
| 676 #endif | |
| 677 inline void operator()(int*) {} | |
| 678 }; | |
| 679 scoped_ptr<int> owner(new int); | |
| 680 scoped_ptr<int, NoOpDeleter> x(owner.get()); | |
| 681 x.reset(x.get()); | |
| 682 } | |
| 683 | |
| 684 // Logging a scoped_ptr<T> to an ostream shouldn't convert it to a boolean | |
| 685 // value first. | |
| 686 TEST(ScopedPtrTest, LoggingDoesntConvertToBoolean) { | |
| 687 scoped_ptr<int> x(new int); | |
| 688 std::stringstream s1; | |
| 689 s1 << x; | |
| 690 | |
| 691 std::stringstream s2; | |
| 692 s2 << x.get(); | |
| 693 | |
| 694 EXPECT_EQ(s2.str(), s1.str()); | |
| 695 } | |
| OLD | NEW |
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