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29
30
31// GOOGLETEST_CM0001 DO NOT DELETE
32
33#ifndef GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
34#define GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
35
36// This header implements typed tests and type-parameterized tests.
37
38// Typed (aka type-driven) tests repeat the same test for types in a
39// list. You must know which types you want to test with when writing
40// typed tests. Here's how you do it:
41
42#if 0
43
44// First, define a fixture class template. It should be parameterized
45// by a type. Remember to derive it from testing::Test.
46template <typename T>
47class FooTest : public testing::Test {
48 public:
49 ...
50 typedef std::list<T> List;
51 static T shared_;
52 T value_;
53};
54
55// Next, associate a list of types with the test suite, which will be
56// repeated for each type in the list. The typedef is necessary for
57// the macro to parse correctly.
58typedef testing::Types<char, int, unsigned int> MyTypes;
59TYPED_TEST_SUITE(FooTest, MyTypes);
60
61// If the type list contains only one type, you can write that type
62// directly without Types<...>:
63// TYPED_TEST_SUITE(FooTest, int);
64
65// Then, use TYPED_TEST() instead of TEST_F() to define as many typed
66// tests for this test suite as you want.
67TYPED_TEST(FooTest, DoesBlah) {
68 // Inside a test, refer to the special name TypeParam to get the type
69 // parameter. Since we are inside a derived class template, C++ requires
70 // us to visit the members of FooTest via 'this'.
71 TypeParam n = this->value_;
72
73 // To visit static members of the fixture, add the TestFixture::
74 // prefix.
75 n += TestFixture::shared_;
76
77 // To refer to typedefs in the fixture, add the "typename
78 // TestFixture::" prefix.
79 typename TestFixture::List values;
80 values.push_back(n);
81 ...
82}
83
84TYPED_TEST(FooTest, HasPropertyA) { ... }
85
86// TYPED_TEST_SUITE takes an optional third argument which allows to specify a
87// class that generates custom test name suffixes based on the type. This should
88// be a class which has a static template function GetName(int index) returning
89// a string for each type. The provided integer index equals the index of the
90// type in the provided type list. In many cases the index can be ignored.
91//
92// For example:
93// class MyTypeNames {
94// public:
95// template <typename T>
96// static std::string GetName(int) {
97// if (std::is_same<T, char>()) return "char";
98// if (std::is_same<T, int>()) return "int";
99// if (std::is_same<T, unsigned int>()) return "unsignedInt";
100// }
101// };
102// TYPED_TEST_SUITE(FooTest, MyTypes, MyTypeNames);
103
104#endif // 0
105
106// Type-parameterized tests are abstract test patterns parameterized
107// by a type. Compared with typed tests, type-parameterized tests
108// allow you to define the test pattern without knowing what the type
109// parameters are. The defined pattern can be instantiated with
110// different types any number of times, in any number of translation
111// units.
112//
113// If you are designing an interface or concept, you can define a
114// suite of type-parameterized tests to verify properties that any
115// valid implementation of the interface/concept should have. Then,
116// each implementation can easily instantiate the test suite to verify
117// that it conforms to the requirements, without having to write
118// similar tests repeatedly. Here's an example:
119
120#if 0
121
122// First, define a fixture class template. It should be parameterized
123// by a type. Remember to derive it from testing::Test.
124template <typename T>
125class FooTest : public testing::Test {
126 ...
127};
128
129// Next, declare that you will define a type-parameterized test suite
130// (the _P suffix is for "parameterized" or "pattern", whichever you
131// prefer):
132TYPED_TEST_SUITE_P(FooTest);
133
134// Then, use TYPED_TEST_P() to define as many type-parameterized tests
135// for this type-parameterized test suite as you want.
136TYPED_TEST_P(FooTest, DoesBlah) {
137 // Inside a test, refer to TypeParam to get the type parameter.
138 TypeParam n = 0;
139 ...
140}
141
142TYPED_TEST_P(FooTest, HasPropertyA) { ... }
143
144// Now the tricky part: you need to register all test patterns before
145// you can instantiate them. The first argument of the macro is the
146// test suite name; the rest are the names of the tests in this test
147// case.
148REGISTER_TYPED_TEST_SUITE_P(FooTest,
149 DoesBlah, HasPropertyA);
150
151// Finally, you are free to instantiate the pattern with the types you
152// want. If you put the above code in a header file, you can #include
153// it in multiple C++ source files and instantiate it multiple times.
154//
155// To distinguish different instances of the pattern, the first
156// argument to the INSTANTIATE_* macro is a prefix that will be added
157// to the actual test suite name. Remember to pick unique prefixes for
158// different instances.
159typedef testing::Types<char, int, unsigned int> MyTypes;
160INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes);
161
162// If the type list contains only one type, you can write that type
163// directly without Types<...>:
164// INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, int);
165//
166// Similar to the optional argument of TYPED_TEST_SUITE above,
167// INSTANTIATE_TEST_SUITE_P takes an optional fourth argument which allows to
168// generate custom names.
169// INSTANTIATE_TYPED_TEST_SUITE_P(My, FooTest, MyTypes, MyTypeNames);
170
171#endif // 0
172
173#include "gtest/internal/gtest-port.h"
174#include "gtest/internal/gtest-type-util.h"
175
176// Implements typed tests.
177
178#if GTEST_HAS_TYPED_TEST
179
180// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
181//
182// Expands to the name of the typedef for the type parameters of the
183// given test suite.
184#define GTEST_TYPE_PARAMS_(TestSuiteName) gtest_type_params_##TestSuiteName##_
185
186// Expands to the name of the typedef for the NameGenerator, responsible for
187// creating the suffixes of the name.
188#define GTEST_NAME_GENERATOR_(TestSuiteName) \
189 gtest_type_params_##TestSuiteName##_NameGenerator
190
191#define TYPED_TEST_SUITE(CaseName, Types, ...) \
192 typedef ::testing::internal::TypeList<Types>::type GTEST_TYPE_PARAMS_( \
193 CaseName); \
194 typedef ::testing::internal::NameGeneratorSelector<__VA_ARGS__>::type \
195 GTEST_NAME_GENERATOR_(CaseName)
196
197# define TYPED_TEST(CaseName, TestName) \
198 template <typename gtest_TypeParam_> \
199 class GTEST_TEST_CLASS_NAME_(CaseName, TestName) \
200 : public CaseName<gtest_TypeParam_> { \
201 private: \
202 typedef CaseName<gtest_TypeParam_> TestFixture; \
203 typedef gtest_TypeParam_ TypeParam; \
204 virtual void TestBody(); \
205 }; \
206 static bool gtest_##CaseName##_##TestName##_registered_ \
207 GTEST_ATTRIBUTE_UNUSED_ = \
208 ::testing::internal::TypeParameterizedTest< \
209 CaseName, \
210 ::testing::internal::TemplateSel<GTEST_TEST_CLASS_NAME_(CaseName, \
211 TestName)>, \
212 GTEST_TYPE_PARAMS_( \
213 CaseName)>::Register("", \
214 ::testing::internal::CodeLocation( \
215 __FILE__, __LINE__), \
216 #CaseName, #TestName, 0, \
217 ::testing::internal::GenerateNames< \
218 GTEST_NAME_GENERATOR_(CaseName), \
219 GTEST_TYPE_PARAMS_(CaseName)>()); \
220 template <typename gtest_TypeParam_> \
221 void GTEST_TEST_CLASS_NAME_(CaseName, \
222 TestName)<gtest_TypeParam_>::TestBody()
223
224// Legacy API is deprecated but still available
225#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
226#define TYPED_TEST_CASE \
227 static_assert(::testing::internal::TypedTestCaseIsDeprecated(), ""); \
228 TYPED_TEST_SUITE
229#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
230
231#endif // GTEST_HAS_TYPED_TEST
232
233// Implements type-parameterized tests.
234
235#if GTEST_HAS_TYPED_TEST_P
236
237// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
238//
239// Expands to the namespace name that the type-parameterized tests for
240// the given type-parameterized test suite are defined in. The exact
241// name of the namespace is subject to change without notice.
242#define GTEST_SUITE_NAMESPACE_(TestSuiteName) gtest_suite_##TestSuiteName##_
243
244// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE.
245//
246// Expands to the name of the variable used to remember the names of
247// the defined tests in the given test suite.
248#define GTEST_TYPED_TEST_SUITE_P_STATE_(TestSuiteName) \
249 gtest_typed_test_suite_p_state_##TestSuiteName##_
250
251// INTERNAL IMPLEMENTATION - DO NOT USE IN USER CODE DIRECTLY.
252//
253// Expands to the name of the variable used to remember the names of
254// the registered tests in the given test suite.
255#define GTEST_REGISTERED_TEST_NAMES_(TestSuiteName) \
256 gtest_registered_test_names_##TestSuiteName##_
257
258// The variables defined in the type-parameterized test macros are
259// static as typically these macros are used in a .h file that can be
260// #included in multiple translation units linked together.
261#define TYPED_TEST_SUITE_P(SuiteName) \
262 static ::testing::internal::TypedTestSuitePState \
263 GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName)
264
265// Legacy API is deprecated but still available
266#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
267#define TYPED_TEST_CASE_P \
268 static_assert(::testing::internal::TypedTestCase_P_IsDeprecated(), ""); \
269 TYPED_TEST_SUITE_P
270#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
271
272#define TYPED_TEST_P(SuiteName, TestName) \
273 namespace GTEST_SUITE_NAMESPACE_(SuiteName) { \
274 template <typename gtest_TypeParam_> \
275 class TestName : public SuiteName<gtest_TypeParam_> { \
276 private: \
277 typedef SuiteName<gtest_TypeParam_> TestFixture; \
278 typedef gtest_TypeParam_ TypeParam; \
279 virtual void TestBody(); \
280 }; \
281 static bool gtest_##TestName##_defined_ GTEST_ATTRIBUTE_UNUSED_ = \
282 GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).AddTestName( \
283 __FILE__, __LINE__, #SuiteName, #TestName); \
284 } \
285 template <typename gtest_TypeParam_> \
286 void GTEST_SUITE_NAMESPACE_( \
287 SuiteName)::TestName<gtest_TypeParam_>::TestBody()
288
289#define REGISTER_TYPED_TEST_SUITE_P(SuiteName, ...) \
290 namespace GTEST_SUITE_NAMESPACE_(SuiteName) { \
291 typedef ::testing::internal::Templates<__VA_ARGS__>::type gtest_AllTests_; \
292 } \
293 static const char* const GTEST_REGISTERED_TEST_NAMES_( \
294 SuiteName) GTEST_ATTRIBUTE_UNUSED_ = \
295 GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName).VerifyRegisteredTestNames( \
296 __FILE__, __LINE__, #__VA_ARGS__)
297
298// Legacy API is deprecated but still available
299#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
300#define REGISTER_TYPED_TEST_CASE_P \
301 static_assert(::testing::internal::RegisterTypedTestCase_P_IsDeprecated(), \
302 ""); \
303 REGISTER_TYPED_TEST_SUITE_P
304#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
305
306#define INSTANTIATE_TYPED_TEST_SUITE_P(Prefix, SuiteName, Types, ...) \
307 static bool gtest_##Prefix##_##SuiteName GTEST_ATTRIBUTE_UNUSED_ = \
308 ::testing::internal::TypeParameterizedTestSuite< \
309 SuiteName, GTEST_SUITE_NAMESPACE_(SuiteName)::gtest_AllTests_, \
310 ::testing::internal::TypeList<Types>::type>:: \
311 Register(#Prefix, \
312 ::testing::internal::CodeLocation(__FILE__, __LINE__), \
313 &GTEST_TYPED_TEST_SUITE_P_STATE_(SuiteName), #SuiteName, \
314 GTEST_REGISTERED_TEST_NAMES_(SuiteName), \
315 ::testing::internal::GenerateNames< \
316 ::testing::internal::NameGeneratorSelector< \
317 __VA_ARGS__>::type, \
318 ::testing::internal::TypeList<Types>::type>())
319
320// Legacy API is deprecated but still available
321#ifndef GTEST_REMOVE_LEGACY_TEST_CASEAPI_
322#define INSTANTIATE_TYPED_TEST_CASE_P \
323 static_assert( \
324 ::testing::internal::InstantiateTypedTestCase_P_IsDeprecated(), ""); \
325 INSTANTIATE_TYPED_TEST_SUITE_P
326#endif // GTEST_REMOVE_LEGACY_TEST_CASEAPI_
327
328#endif // GTEST_HAS_TYPED_TEST_P
329
330#endif // GTEST_INCLUDE_GTEST_GTEST_TYPED_TEST_H_
331