ceph/src/googletest/googletest/test/gtest-typed-test_test.cc

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  29
  30
  31 #include "test/gtest-typed-test_test.h"
  32
  33 #include <set>
  34 #include <type_traits>
  35 #include <vector>
  36
  37 #include "gtest/gtest.h"
  38
  39 #if _MSC_VER
  40 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4127 /* conditional expression is constant */)
  41 #endif  //  _MSC_VER
  42
  43 using testing::Test;
  44
  45 // Used for testing that SetUpTestSuite()/TearDownTestSuite(), fixture
  46 // ctor/dtor, and SetUp()/TearDown() work correctly in typed tests and
  47 // type-parameterized test.
  48 template <typename T>
  49 class CommonTest : public Test {
  50   // For some technical reason, SetUpTestSuite() and TearDownTestSuite()
  51   // must be public.
  52  public:
  53   static void SetUpTestSuite() {
  54     shared_ = new T(5);
  55   }
  56
  57   static void TearDownTestSuite() {
  58     delete shared_;
  59     shared_ = nullptr;
  60   }
  61
  62   // This 'protected:' is optional.  There's no harm in making all
  63   // members of this fixture class template public.
  64  protected:
  65   // We used to use std::list here, but switched to std::vector since
  66   // MSVC's <list> doesn't compile cleanly with /W4.
  67   typedef std::vector<T> Vector;
  68   typedef std::set<int> IntSet;
  69
  70   CommonTest() : value_(1) {}
  71
  72   ~CommonTest() override { EXPECT_EQ(3, value_); }
  73
  74   void SetUp() override {
  75     EXPECT_EQ(1, value_);
  76     value_++;
  77   }
  78
  79   void TearDown() override {
  80     EXPECT_EQ(2, value_);
  81     value_++;
  82   }
  83
  84   T value_;
  85   static T* shared_;
  86 };
  87
  88 template <typename T>
  89 T* CommonTest<T>::shared_ = nullptr;
  90
  91 // This #ifdef block tests typed tests.
  92 #if GTEST_HAS_TYPED_TEST
  93
  94 using testing::Types;
  95
  96 // Tests that SetUpTestSuite()/TearDownTestSuite(), fixture ctor/dtor,
  97 // and SetUp()/TearDown() work correctly in typed tests
  98
  99 typedef Types<char, int> TwoTypes;
 100 TYPED_TEST_SUITE(CommonTest, TwoTypes);
 101
 102 TYPED_TEST(CommonTest, ValuesAreCorrect) {
 103   // Static members of the fixture class template can be visited via
 104   // the TestFixture:: prefix.
 105   EXPECT_EQ(5, *TestFixture::shared_);
 106
 107   // Typedefs in the fixture class template can be visited via the
 108   // "typename TestFixture::" prefix.
 109   typename TestFixture::Vector empty;
 110   EXPECT_EQ(0U, empty.size());
 111
 112   typename TestFixture::IntSet empty2;
 113   EXPECT_EQ(0U, empty2.size());
 114
 115   // Non-static members of the fixture class must be visited via
 116   // 'this', as required by C++ for class templates.
 117   EXPECT_EQ(2, this->value_);
 118 }
 119
 120 // The second test makes sure shared_ is not deleted after the first
 121 // test.
 122 TYPED_TEST(CommonTest, ValuesAreStillCorrect) {
 123   // Static members of the fixture class template can also be visited
 124   // via 'this'.
 125   ASSERT_TRUE(this->shared_ != nullptr);
 126   EXPECT_EQ(5, *this->shared_);
 127
 128   // TypeParam can be used to refer to the type parameter.
 129   EXPECT_EQ(static_cast<TypeParam>(2), this->value_);
 130 }
 131
 132 // Tests that multiple TYPED_TEST_SUITE's can be defined in the same
 133 // translation unit.
 134
 135 template <typename T>
 136 class TypedTest1 : public Test {
 137 };
 138
 139 // Verifies that the second argument of TYPED_TEST_SUITE can be a
 140 // single type.
 141 TYPED_TEST_SUITE(TypedTest1, int);
 142 TYPED_TEST(TypedTest1, A) {}
 143
 144 template <typename T>
 145 class TypedTest2 : public Test {
 146 };
 147
 148 // Verifies that the second argument of TYPED_TEST_SUITE can be a
 149 // Types<...> type list.
 150 TYPED_TEST_SUITE(TypedTest2, Types<int>);
 151
 152 // This also verifies that tests from different typed test cases can
 153 // share the same name.
 154 TYPED_TEST(TypedTest2, A) {}
 155
 156 // Tests that a typed test case can be defined in a namespace.
 157
 158 namespace library1 {
 159
 160 template <typename T>
 161 class NumericTest : public Test {
 162 };
 163
 164 typedef Types<int, long> NumericTypes;
 165 TYPED_TEST_SUITE(NumericTest, NumericTypes);
 166
 167 TYPED_TEST(NumericTest, DefaultIsZero) {
 168   EXPECT_EQ(0, TypeParam());
 169 }
 170
 171 }  // namespace library1
 172
 173 // Tests that custom names work.
 174 template <typename T>
 175 class TypedTestWithNames : public Test {};
 176
 177 class TypedTestNames {
 178  public:
 179   template <typename T>
 180   static std::string GetName(int i) {
 181     if (std::is_same<T, char>::value) {
 182       return std::string("char") + ::testing::PrintToString(i);
 183     }
 184     if (std::is_same<T, int>::value) {
 185       return std::string("int") + ::testing::PrintToString(i);
 186     }
 187   }
 188 };
 189
 190 TYPED_TEST_SUITE(TypedTestWithNames, TwoTypes, TypedTestNames);
 191
 192 TYPED_TEST(TypedTestWithNames, TestSuiteName) {
 193   if (std::is_same<TypeParam, char>::value) {
 194     EXPECT_STREQ(::testing::UnitTest::GetInstance()
 195                      ->current_test_info()
 196                      ->test_suite_name(),
 197                  "TypedTestWithNames/char0");
 198   }
 199   if (std::is_same<TypeParam, int>::value) {
 200     EXPECT_STREQ(::testing::UnitTest::GetInstance()
 201                      ->current_test_info()
 202                      ->test_suite_name(),
 203                  "TypedTestWithNames/int1");
 204   }
 205 }
 206
 207 #endif  // GTEST_HAS_TYPED_TEST
 208
 209 // This #ifdef block tests type-parameterized tests.
 210 #if GTEST_HAS_TYPED_TEST_P
 211
 212 using testing::Types;
 213 using testing::internal::TypedTestSuitePState;
 214
 215 // Tests TypedTestSuitePState.
 216
 217 class TypedTestSuitePStateTest : public Test {
 218  protected:
 219   void SetUp() override {
 220     state_.AddTestName("foo.cc", 0, "FooTest", "A");
 221     state_.AddTestName("foo.cc", 0, "FooTest", "B");
 222     state_.AddTestName("foo.cc", 0, "FooTest", "C");
 223   }
 224
 225   TypedTestSuitePState state_;
 226 };
 227
 228 TEST_F(TypedTestSuitePStateTest, SucceedsForMatchingList) {
 229   const char* tests = "A, B, C";
 230   EXPECT_EQ(tests,
 231             state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, tests));
 232 }
 233
 234 // Makes sure that the order of the tests and spaces around the names
 235 // don't matter.
 236 TEST_F(TypedTestSuitePStateTest, IgnoresOrderAndSpaces) {
 237   const char* tests = "A,C,   B";
 238   EXPECT_EQ(tests,
 239             state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, tests));
 240 }
 241
 242 using TypedTestSuitePStateDeathTest = TypedTestSuitePStateTest;
 243
 244 TEST_F(TypedTestSuitePStateDeathTest, DetectsDuplicates) {
 245   EXPECT_DEATH_IF_SUPPORTED(
 246       state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, "A, B, A, C"),
 247       "foo\\.cc.1.?: Test A is listed more than once\\.");
 248 }
 249
 250 TEST_F(TypedTestSuitePStateDeathTest, DetectsExtraTest) {
 251   EXPECT_DEATH_IF_SUPPORTED(
 252       state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, "A, B, C, D"),
 253       "foo\\.cc.1.?: No test named D can be found in this test suite\\.");
 254 }
 255
 256 TEST_F(TypedTestSuitePStateDeathTest, DetectsMissedTest) {
 257   EXPECT_DEATH_IF_SUPPORTED(
 258       state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, "A, C"),
 259       "foo\\.cc.1.?: You forgot to list test B\\.");
 260 }
 261
 262 // Tests that defining a test for a parameterized test case generates
 263 // a run-time error if the test case has been registered.
 264 TEST_F(TypedTestSuitePStateDeathTest, DetectsTestAfterRegistration) {
 265   state_.VerifyRegisteredTestNames("Suite", "foo.cc", 1, "A, B, C");
 266   EXPECT_DEATH_IF_SUPPORTED(
 267       state_.AddTestName("foo.cc", 2, "FooTest", "D"),
 268       "foo\\.cc.2.?: Test D must be defined before REGISTER_TYPED_TEST_SUITE_P"
 269       "\\(FooTest, \\.\\.\\.\\)\\.");
 270 }
 271
 272 // Tests that SetUpTestSuite()/TearDownTestSuite(), fixture ctor/dtor,
 273 // and SetUp()/TearDown() work correctly in type-parameterized tests.
 274
 275 template <typename T>
 276 class DerivedTest : public CommonTest<T> {
 277 };
 278
 279 TYPED_TEST_SUITE_P(DerivedTest);
 280
 281 TYPED_TEST_P(DerivedTest, ValuesAreCorrect) {
 282   // Static members of the fixture class template can be visited via
 283   // the TestFixture:: prefix.
 284   EXPECT_EQ(5, *TestFixture::shared_);
 285
 286   // Non-static members of the fixture class must be visited via
 287   // 'this', as required by C++ for class templates.
 288   EXPECT_EQ(2, this->value_);
 289 }
 290
 291 // The second test makes sure shared_ is not deleted after the first
 292 // test.
 293 TYPED_TEST_P(DerivedTest, ValuesAreStillCorrect) {
 294   // Static members of the fixture class template can also be visited
 295   // via 'this'.
 296   ASSERT_TRUE(this->shared_ != nullptr);
 297   EXPECT_EQ(5, *this->shared_);
 298   EXPECT_EQ(2, this->value_);
 299 }
 300
 301 REGISTER_TYPED_TEST_SUITE_P(DerivedTest,
 302                            ValuesAreCorrect, ValuesAreStillCorrect);
 303
 304 typedef Types<short, long> MyTwoTypes;
 305 INSTANTIATE_TYPED_TEST_SUITE_P(My, DerivedTest, MyTwoTypes);
 306
 307 // Tests that custom names work with type parametrized tests. We reuse the
 308 // TwoTypes from above here.
 309 template <typename T>
 310 class TypeParametrizedTestWithNames : public Test {};
 311
 312 TYPED_TEST_SUITE_P(TypeParametrizedTestWithNames);
 313
 314 TYPED_TEST_P(TypeParametrizedTestWithNames, TestSuiteName) {
 315   if (std::is_same<TypeParam, char>::value) {
 316     EXPECT_STREQ(::testing::UnitTest::GetInstance()
 317                      ->current_test_info()
 318                      ->test_suite_name(),
 319                  "CustomName/TypeParametrizedTestWithNames/parChar0");
 320   }
 321   if (std::is_same<TypeParam, int>::value) {
 322     EXPECT_STREQ(::testing::UnitTest::GetInstance()
 323                      ->current_test_info()
 324                      ->test_suite_name(),
 325                  "CustomName/TypeParametrizedTestWithNames/parInt1");
 326   }
 327 }
 328
 329 REGISTER_TYPED_TEST_SUITE_P(TypeParametrizedTestWithNames, TestSuiteName);
 330
 331 class TypeParametrizedTestNames {
 332  public:
 333   template <typename T>
 334   static std::string GetName(int i) {
 335     if (std::is_same<T, char>::value) {
 336       return std::string("parChar") + ::testing::PrintToString(i);
 337     }
 338     if (std::is_same<T, int>::value) {
 339       return std::string("parInt") + ::testing::PrintToString(i);
 340     }
 341   }
 342 };
 343
 344 INSTANTIATE_TYPED_TEST_SUITE_P(CustomName, TypeParametrizedTestWithNames,
 345                               TwoTypes, TypeParametrizedTestNames);
 346
 347 // Tests that multiple TYPED_TEST_SUITE_P's can be defined in the same
 348 // translation unit.
 349
 350 template <typename T>
 351 class TypedTestP1 : public Test {
 352 };
 353
 354 TYPED_TEST_SUITE_P(TypedTestP1);
 355
 356 // For testing that the code between TYPED_TEST_SUITE_P() and
 357 // TYPED_TEST_P() is not enclosed in a namespace.
 358 using IntAfterTypedTestSuiteP = int;
 359
 360 TYPED_TEST_P(TypedTestP1, A) {}
 361 TYPED_TEST_P(TypedTestP1, B) {}
 362
 363 // For testing that the code between TYPED_TEST_P() and
 364 // REGISTER_TYPED_TEST_SUITE_P() is not enclosed in a namespace.
 365 using IntBeforeRegisterTypedTestSuiteP = int;
 366
 367 REGISTER_TYPED_TEST_SUITE_P(TypedTestP1, A, B);
 368
 369 template <typename T>
 370 class TypedTestP2 : public Test {
 371 };
 372
 373 TYPED_TEST_SUITE_P(TypedTestP2);
 374
 375 // This also verifies that tests from different type-parameterized
 376 // test cases can share the same name.
 377 TYPED_TEST_P(TypedTestP2, A) {}
 378
 379 REGISTER_TYPED_TEST_SUITE_P(TypedTestP2, A);
 380
 381 // Verifies that the code between TYPED_TEST_SUITE_P() and
 382 // REGISTER_TYPED_TEST_SUITE_P() is not enclosed in a namespace.
 383 IntAfterTypedTestSuiteP after = 0;
 384 IntBeforeRegisterTypedTestSuiteP before = 0;
 385
 386 // Verifies that the last argument of INSTANTIATE_TYPED_TEST_SUITE_P()
 387 // can be either a single type or a Types<...> type list.
 388 INSTANTIATE_TYPED_TEST_SUITE_P(Int, TypedTestP1, int);
 389 INSTANTIATE_TYPED_TEST_SUITE_P(Int, TypedTestP2, Types<int>);
 390
 391 // Tests that the same type-parameterized test case can be
 392 // instantiated more than once in the same translation unit.
 393 INSTANTIATE_TYPED_TEST_SUITE_P(Double, TypedTestP2, Types<double>);
 394
 395 // Tests that the same type-parameterized test case can be
 396 // instantiated in different translation units linked together.
 397 // (ContainerTest is also instantiated in gtest-typed-test_test.cc.)
 398 typedef Types<std::vector<double>, std::set<char> > MyContainers;
 399 INSTANTIATE_TYPED_TEST_SUITE_P(My, ContainerTest, MyContainers);
 400
 401 // Tests that a type-parameterized test case can be defined and
 402 // instantiated in a namespace.
 403
 404 namespace library2 {
 405
 406 template <typename T>
 407 class NumericTest : public Test {
 408 };
 409
 410 TYPED_TEST_SUITE_P(NumericTest);
 411
 412 TYPED_TEST_P(NumericTest, DefaultIsZero) {
 413   EXPECT_EQ(0, TypeParam());
 414 }
 415
 416 TYPED_TEST_P(NumericTest, ZeroIsLessThanOne) {
 417   EXPECT_LT(TypeParam(0), TypeParam(1));
 418 }
 419
 420 REGISTER_TYPED_TEST_SUITE_P(NumericTest,
 421                            DefaultIsZero, ZeroIsLessThanOne);
 422 typedef Types<int, double> NumericTypes;
 423 INSTANTIATE_TYPED_TEST_SUITE_P(My, NumericTest, NumericTypes);
 424
 425 static const char* GetTestName() {
 426   return testing::UnitTest::GetInstance()->current_test_info()->name();
 427 }
 428 // Test the stripping of space from test names
 429 template <typename T> class TrimmedTest : public Test { };
 430 TYPED_TEST_SUITE_P(TrimmedTest);
 431 TYPED_TEST_P(TrimmedTest, Test1) { EXPECT_STREQ("Test1", GetTestName()); }
 432 TYPED_TEST_P(TrimmedTest, Test2) { EXPECT_STREQ("Test2", GetTestName()); }
 433 TYPED_TEST_P(TrimmedTest, Test3) { EXPECT_STREQ("Test3", GetTestName()); }
 434 TYPED_TEST_P(TrimmedTest, Test4) { EXPECT_STREQ("Test4", GetTestName()); }
 435 TYPED_TEST_P(TrimmedTest, Test5) { EXPECT_STREQ("Test5", GetTestName()); }
 436 REGISTER_TYPED_TEST_SUITE_P(
 437     TrimmedTest,
 438     Test1, Test2,Test3 , Test4 ,Test5 );  // NOLINT
 439 template <typename T1, typename T2> struct MyPair {};
 440 // Be sure to try a type with a comma in its name just in case it matters.
 441 typedef Types<int, double, MyPair<int, int> > TrimTypes;
 442 INSTANTIATE_TYPED_TEST_SUITE_P(My, TrimmedTest, TrimTypes);
 443
 444 }  // namespace library2
 445
 446 #endif  // GTEST_HAS_TYPED_TEST_P
 447
 448 #if !defined(GTEST_HAS_TYPED_TEST) && !defined(GTEST_HAS_TYPED_TEST_P)
 449
 450 // Google Test may not support type-parameterized tests with some
 451 // compilers. If we use conditional compilation to compile out all
 452 // code referring to the gtest_main library, MSVC linker will not link
 453 // that library at all and consequently complain about missing entry
 454 // point defined in that library (fatal error LNK1561: entry point
 455 // must be defined). This dummy test keeps gtest_main linked in.
 456 TEST(DummyTest, TypedTestsAreNotSupportedOnThisPlatform) {}
 457
 458 #if _MSC_VER
 459 GTEST_DISABLE_MSC_WARNINGS_POP_()  //  4127
 460 #endif                             //  _MSC_VER
 461
 462 #endif  // #if !defined(GTEST_HAS_TYPED_TEST) && !defined(GTEST_HAS_TYPED_TEST_P)