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31 // Google Mock - a framework for writing C++ mock classes.
33 // This file tests the built-in actions.
35 // Silence C4100 (unreferenced formal parameter) for MSVC
37 # pragma warning(push)
38 # pragma warning(disable:4100)
40 // and silence C4800 (C4800: 'int *const ': forcing value
41 // to bool 'true' or 'false') for MSVC 15
42 # pragma warning(disable:4800)
46 #include "gmock/gmock-actions.h"
51 #include <type_traits>
52 #include "gmock/gmock.h"
53 #include "gmock/internal/gmock-port.h"
54 #include "gtest/gtest.h"
55 #include "gtest/gtest-spi.h"
60 using ::testing::Action;
61 using ::testing::ActionInterface;
62 using ::testing::Assign;
63 using ::testing::ByMove;
64 using ::testing::ByRef;
65 using ::testing::DefaultValue;
66 using ::testing::DoAll;
67 using ::testing::DoDefault;
68 using ::testing::IgnoreResult;
69 using ::testing::Invoke;
70 using ::testing::InvokeWithoutArgs;
71 using ::testing::MakePolymorphicAction;
72 using ::testing::PolymorphicAction;
73 using ::testing::Return;
74 using ::testing::ReturnNew;
75 using ::testing::ReturnNull;
76 using ::testing::ReturnRef;
77 using ::testing::ReturnRefOfCopy;
78 using ::testing::ReturnRoundRobin;
79 using ::testing::SetArgPointee;
80 using ::testing::SetArgumentPointee;
81 using ::testing::Unused;
82 using ::testing::WithArgs;
83 using ::testing::internal::BuiltInDefaultValue;
85 #if !GTEST_OS_WINDOWS_MOBILE
86 using ::testing::SetErrnoAndReturn;
89 // Tests that BuiltInDefaultValue<T*>::Get() returns NULL.
90 TEST(BuiltInDefaultValueTest, IsNullForPointerTypes) {
91 EXPECT_TRUE(BuiltInDefaultValue<int*>::Get() == nullptr);
92 EXPECT_TRUE(BuiltInDefaultValue<const char*>::Get() == nullptr);
93 EXPECT_TRUE(BuiltInDefaultValue<void*>::Get() == nullptr);
96 // Tests that BuiltInDefaultValue<T*>::Exists() return true.
97 TEST(BuiltInDefaultValueTest, ExistsForPointerTypes) {
98 EXPECT_TRUE(BuiltInDefaultValue<int*>::Exists());
99 EXPECT_TRUE(BuiltInDefaultValue<const char*>::Exists());
100 EXPECT_TRUE(BuiltInDefaultValue<void*>::Exists());
103 // Tests that BuiltInDefaultValue<T>::Get() returns 0 when T is a
104 // built-in numeric type.
105 TEST(BuiltInDefaultValueTest, IsZeroForNumericTypes) {
106 EXPECT_EQ(0U, BuiltInDefaultValue<unsigned char>::Get());
107 EXPECT_EQ(0, BuiltInDefaultValue<signed char>::Get());
108 EXPECT_EQ(0, BuiltInDefaultValue<char>::Get());
109 #if GMOCK_WCHAR_T_IS_NATIVE_
110 #if !defined(__WCHAR_UNSIGNED__)
111 EXPECT_EQ(0, BuiltInDefaultValue<wchar_t>::Get());
113 EXPECT_EQ(0U, BuiltInDefaultValue<wchar_t>::Get());
116 EXPECT_EQ(0U, BuiltInDefaultValue<unsigned short>::Get()); // NOLINT
117 EXPECT_EQ(0, BuiltInDefaultValue<signed short>::Get()); // NOLINT
118 EXPECT_EQ(0, BuiltInDefaultValue<short>::Get()); // NOLINT
119 EXPECT_EQ(0U, BuiltInDefaultValue<unsigned int>::Get());
120 EXPECT_EQ(0, BuiltInDefaultValue<signed int>::Get());
121 EXPECT_EQ(0, BuiltInDefaultValue<int>::Get());
122 EXPECT_EQ(0U, BuiltInDefaultValue<unsigned long>::Get()); // NOLINT
123 EXPECT_EQ(0, BuiltInDefaultValue<signed long>::Get()); // NOLINT
124 EXPECT_EQ(0, BuiltInDefaultValue<long>::Get()); // NOLINT
125 EXPECT_EQ(0U, BuiltInDefaultValue<unsigned long long>::Get()); // NOLINT
126 EXPECT_EQ(0, BuiltInDefaultValue<signed long long>::Get()); // NOLINT
127 EXPECT_EQ(0, BuiltInDefaultValue<long long>::Get()); // NOLINT
128 EXPECT_EQ(0, BuiltInDefaultValue<float>::Get());
129 EXPECT_EQ(0, BuiltInDefaultValue<double>::Get());
132 // Tests that BuiltInDefaultValue<T>::Exists() returns true when T is a
133 // built-in numeric type.
134 TEST(BuiltInDefaultValueTest, ExistsForNumericTypes) {
135 EXPECT_TRUE(BuiltInDefaultValue<unsigned char>::Exists());
136 EXPECT_TRUE(BuiltInDefaultValue<signed char>::Exists());
137 EXPECT_TRUE(BuiltInDefaultValue<char>::Exists());
138 #if GMOCK_WCHAR_T_IS_NATIVE_
139 EXPECT_TRUE(BuiltInDefaultValue<wchar_t>::Exists());
141 EXPECT_TRUE(BuiltInDefaultValue<unsigned short>::Exists()); // NOLINT
142 EXPECT_TRUE(BuiltInDefaultValue<signed short>::Exists()); // NOLINT
143 EXPECT_TRUE(BuiltInDefaultValue<short>::Exists()); // NOLINT
144 EXPECT_TRUE(BuiltInDefaultValue<unsigned int>::Exists());
145 EXPECT_TRUE(BuiltInDefaultValue<signed int>::Exists());
146 EXPECT_TRUE(BuiltInDefaultValue<int>::Exists());
147 EXPECT_TRUE(BuiltInDefaultValue<unsigned long>::Exists()); // NOLINT
148 EXPECT_TRUE(BuiltInDefaultValue<signed long>::Exists()); // NOLINT
149 EXPECT_TRUE(BuiltInDefaultValue<long>::Exists()); // NOLINT
150 EXPECT_TRUE(BuiltInDefaultValue<unsigned long long>::Exists()); // NOLINT
151 EXPECT_TRUE(BuiltInDefaultValue<signed long long>::Exists()); // NOLINT
152 EXPECT_TRUE(BuiltInDefaultValue<long long>::Exists()); // NOLINT
153 EXPECT_TRUE(BuiltInDefaultValue<float>::Exists());
154 EXPECT_TRUE(BuiltInDefaultValue<double>::Exists());
157 // Tests that BuiltInDefaultValue<bool>::Get() returns false.
158 TEST(BuiltInDefaultValueTest, IsFalseForBool) {
159 EXPECT_FALSE(BuiltInDefaultValue<bool>::Get());
162 // Tests that BuiltInDefaultValue<bool>::Exists() returns true.
163 TEST(BuiltInDefaultValueTest, BoolExists) {
164 EXPECT_TRUE(BuiltInDefaultValue<bool>::Exists());
167 // Tests that BuiltInDefaultValue<T>::Get() returns "" when T is a
169 TEST(BuiltInDefaultValueTest, IsEmptyStringForString) {
170 EXPECT_EQ("", BuiltInDefaultValue< ::std::string>::Get());
173 // Tests that BuiltInDefaultValue<T>::Exists() returns true when T is a
175 TEST(BuiltInDefaultValueTest, ExistsForString) {
176 EXPECT_TRUE(BuiltInDefaultValue< ::std::string>::Exists());
179 // Tests that BuiltInDefaultValue<const T>::Get() returns the same
180 // value as BuiltInDefaultValue<T>::Get() does.
181 TEST(BuiltInDefaultValueTest, WorksForConstTypes) {
182 EXPECT_EQ("", BuiltInDefaultValue<const std::string>::Get());
183 EXPECT_EQ(0, BuiltInDefaultValue<const int>::Get());
184 EXPECT_TRUE(BuiltInDefaultValue<char* const>::Get() == nullptr);
185 EXPECT_FALSE(BuiltInDefaultValue<const bool>::Get());
188 // A type that's default constructible.
189 class MyDefaultConstructible {
191 MyDefaultConstructible() : value_(42) {}
193 int value() const { return value_; }
199 // A type that's not default constructible.
200 class MyNonDefaultConstructible {
202 // Does not have a default ctor.
203 explicit MyNonDefaultConstructible(int a_value) : value_(a_value) {}
205 int value() const { return value_; }
212 TEST(BuiltInDefaultValueTest, ExistsForDefaultConstructibleType) {
213 EXPECT_TRUE(BuiltInDefaultValue<MyDefaultConstructible>::Exists());
216 TEST(BuiltInDefaultValueTest, IsDefaultConstructedForDefaultConstructibleType) {
217 EXPECT_EQ(42, BuiltInDefaultValue<MyDefaultConstructible>::Get().value());
221 TEST(BuiltInDefaultValueTest, DoesNotExistForNonDefaultConstructibleType) {
222 EXPECT_FALSE(BuiltInDefaultValue<MyNonDefaultConstructible>::Exists());
225 // Tests that BuiltInDefaultValue<T&>::Get() aborts the program.
226 TEST(BuiltInDefaultValueDeathTest, IsUndefinedForReferences) {
227 EXPECT_DEATH_IF_SUPPORTED({
228 BuiltInDefaultValue<int&>::Get();
230 EXPECT_DEATH_IF_SUPPORTED({
231 BuiltInDefaultValue<const char&>::Get();
235 TEST(BuiltInDefaultValueDeathTest, IsUndefinedForNonDefaultConstructibleType) {
236 EXPECT_DEATH_IF_SUPPORTED({
237 BuiltInDefaultValue<MyNonDefaultConstructible>::Get();
241 // Tests that DefaultValue<T>::IsSet() is false initially.
242 TEST(DefaultValueTest, IsInitiallyUnset) {
243 EXPECT_FALSE(DefaultValue<int>::IsSet());
244 EXPECT_FALSE(DefaultValue<MyDefaultConstructible>::IsSet());
245 EXPECT_FALSE(DefaultValue<const MyNonDefaultConstructible>::IsSet());
248 // Tests that DefaultValue<T> can be set and then unset.
249 TEST(DefaultValueTest, CanBeSetAndUnset) {
250 EXPECT_TRUE(DefaultValue<int>::Exists());
251 EXPECT_FALSE(DefaultValue<const MyNonDefaultConstructible>::Exists());
253 DefaultValue<int>::Set(1);
254 DefaultValue<const MyNonDefaultConstructible>::Set(
255 MyNonDefaultConstructible(42));
257 EXPECT_EQ(1, DefaultValue<int>::Get());
258 EXPECT_EQ(42, DefaultValue<const MyNonDefaultConstructible>::Get().value());
260 EXPECT_TRUE(DefaultValue<int>::Exists());
261 EXPECT_TRUE(DefaultValue<const MyNonDefaultConstructible>::Exists());
263 DefaultValue<int>::Clear();
264 DefaultValue<const MyNonDefaultConstructible>::Clear();
266 EXPECT_FALSE(DefaultValue<int>::IsSet());
267 EXPECT_FALSE(DefaultValue<const MyNonDefaultConstructible>::IsSet());
269 EXPECT_TRUE(DefaultValue<int>::Exists());
270 EXPECT_FALSE(DefaultValue<const MyNonDefaultConstructible>::Exists());
273 // Tests that DefaultValue<T>::Get() returns the
274 // BuiltInDefaultValue<T>::Get() when DefaultValue<T>::IsSet() is
276 TEST(DefaultValueDeathTest, GetReturnsBuiltInDefaultValueWhenUnset) {
277 EXPECT_FALSE(DefaultValue<int>::IsSet());
278 EXPECT_TRUE(DefaultValue<int>::Exists());
279 EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible>::IsSet());
280 EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible>::Exists());
282 EXPECT_EQ(0, DefaultValue<int>::Get());
284 EXPECT_DEATH_IF_SUPPORTED({
285 DefaultValue<MyNonDefaultConstructible>::Get();
289 TEST(DefaultValueTest, GetWorksForMoveOnlyIfSet) {
290 EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Exists());
291 EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Get() == nullptr);
292 DefaultValue<std::unique_ptr<int>>::SetFactory([] {
293 return std::unique_ptr<int>(new int(42));
295 EXPECT_TRUE(DefaultValue<std::unique_ptr<int>>::Exists());
296 std::unique_ptr<int> i = DefaultValue<std::unique_ptr<int>>::Get();
300 // Tests that DefaultValue<void>::Get() returns void.
301 TEST(DefaultValueTest, GetWorksForVoid) {
302 return DefaultValue<void>::Get();
305 // Tests using DefaultValue with a reference type.
307 // Tests that DefaultValue<T&>::IsSet() is false initially.
308 TEST(DefaultValueOfReferenceTest, IsInitiallyUnset) {
309 EXPECT_FALSE(DefaultValue<int&>::IsSet());
310 EXPECT_FALSE(DefaultValue<MyDefaultConstructible&>::IsSet());
311 EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::IsSet());
314 // Tests that DefaultValue<T&>::Exists is false initiallly.
315 TEST(DefaultValueOfReferenceTest, IsInitiallyNotExisting) {
316 EXPECT_FALSE(DefaultValue<int&>::Exists());
317 EXPECT_FALSE(DefaultValue<MyDefaultConstructible&>::Exists());
318 EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::Exists());
321 // Tests that DefaultValue<T&> can be set and then unset.
322 TEST(DefaultValueOfReferenceTest, CanBeSetAndUnset) {
324 DefaultValue<const int&>::Set(n);
325 MyNonDefaultConstructible x(42);
326 DefaultValue<MyNonDefaultConstructible&>::Set(x);
328 EXPECT_TRUE(DefaultValue<const int&>::Exists());
329 EXPECT_TRUE(DefaultValue<MyNonDefaultConstructible&>::Exists());
331 EXPECT_EQ(&n, &(DefaultValue<const int&>::Get()));
332 EXPECT_EQ(&x, &(DefaultValue<MyNonDefaultConstructible&>::Get()));
334 DefaultValue<const int&>::Clear();
335 DefaultValue<MyNonDefaultConstructible&>::Clear();
337 EXPECT_FALSE(DefaultValue<const int&>::Exists());
338 EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::Exists());
340 EXPECT_FALSE(DefaultValue<const int&>::IsSet());
341 EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::IsSet());
344 // Tests that DefaultValue<T&>::Get() returns the
345 // BuiltInDefaultValue<T&>::Get() when DefaultValue<T&>::IsSet() is
347 TEST(DefaultValueOfReferenceDeathTest, GetReturnsBuiltInDefaultValueWhenUnset) {
348 EXPECT_FALSE(DefaultValue<int&>::IsSet());
349 EXPECT_FALSE(DefaultValue<MyNonDefaultConstructible&>::IsSet());
351 EXPECT_DEATH_IF_SUPPORTED({
352 DefaultValue<int&>::Get();
354 EXPECT_DEATH_IF_SUPPORTED({
355 DefaultValue<MyNonDefaultConstructible>::Get();
359 // Tests that ActionInterface can be implemented by defining the
362 typedef int MyGlobalFunction(bool, int);
364 class MyActionImpl : public ActionInterface<MyGlobalFunction> {
366 int Perform(const std::tuple<bool, int>& args) override {
367 return std::get<0>(args) ? std::get<1>(args) : 0;
371 TEST(ActionInterfaceTest, CanBeImplementedByDefiningPerform) {
372 MyActionImpl my_action_impl;
373 (void)my_action_impl;
376 TEST(ActionInterfaceTest, MakeAction) {
377 Action<MyGlobalFunction> action = MakeAction(new MyActionImpl);
379 // When exercising the Perform() method of Action<F>, we must pass
380 // it a tuple whose size and type are compatible with F's argument
381 // types. For example, if F is int(), then Perform() takes a
382 // 0-tuple; if F is void(bool, int), then Perform() takes a
383 // std::tuple<bool, int>, and so on.
384 EXPECT_EQ(5, action.Perform(std::make_tuple(true, 5)));
387 // Tests that Action<F> can be contructed from a pointer to
388 // ActionInterface<F>.
389 TEST(ActionTest, CanBeConstructedFromActionInterface) {
390 Action<MyGlobalFunction> action(new MyActionImpl);
393 // Tests that Action<F> delegates actual work to ActionInterface<F>.
394 TEST(ActionTest, DelegatesWorkToActionInterface) {
395 const Action<MyGlobalFunction> action(new MyActionImpl);
397 EXPECT_EQ(5, action.Perform(std::make_tuple(true, 5)));
398 EXPECT_EQ(0, action.Perform(std::make_tuple(false, 1)));
401 // Tests that Action<F> can be copied.
402 TEST(ActionTest, IsCopyable) {
403 Action<MyGlobalFunction> a1(new MyActionImpl);
404 Action<MyGlobalFunction> a2(a1); // Tests the copy constructor.
406 // a1 should continue to work after being copied from.
407 EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
408 EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 1)));
410 // a2 should work like the action it was copied from.
411 EXPECT_EQ(5, a2.Perform(std::make_tuple(true, 5)));
412 EXPECT_EQ(0, a2.Perform(std::make_tuple(false, 1)));
414 a2 = a1; // Tests the assignment operator.
416 // a1 should continue to work after being copied from.
417 EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
418 EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 1)));
420 // a2 should work like the action it was copied from.
421 EXPECT_EQ(5, a2.Perform(std::make_tuple(true, 5)));
422 EXPECT_EQ(0, a2.Perform(std::make_tuple(false, 1)));
425 // Tests that an Action<From> object can be converted to a
426 // compatible Action<To> object.
428 class IsNotZero : public ActionInterface<bool(int)> { // NOLINT
430 bool Perform(const std::tuple<int>& arg) override {
431 return std::get<0>(arg) != 0;
435 TEST(ActionTest, CanBeConvertedToOtherActionType) {
436 const Action<bool(int)> a1(new IsNotZero); // NOLINT
437 const Action<int(char)> a2 = Action<int(char)>(a1); // NOLINT
438 EXPECT_EQ(1, a2.Perform(std::make_tuple('a')));
439 EXPECT_EQ(0, a2.Perform(std::make_tuple('\0')));
442 // The following two classes are for testing MakePolymorphicAction().
444 // Implements a polymorphic action that returns the second of the
445 // arguments it receives.
446 class ReturnSecondArgumentAction {
448 // We want to verify that MakePolymorphicAction() can work with a
449 // polymorphic action whose Perform() method template is either
450 // const or not. This lets us verify the non-const case.
451 template <typename Result, typename ArgumentTuple>
452 Result Perform(const ArgumentTuple& args) {
453 return std::get<1>(args);
457 // Implements a polymorphic action that can be used in a nullary
458 // function to return 0.
459 class ReturnZeroFromNullaryFunctionAction {
461 // For testing that MakePolymorphicAction() works when the
462 // implementation class' Perform() method template takes only one
463 // template parameter.
465 // We want to verify that MakePolymorphicAction() can work with a
466 // polymorphic action whose Perform() method template is either
467 // const or not. This lets us verify the const case.
468 template <typename Result>
469 Result Perform(const std::tuple<>&) const {
474 // These functions verify that MakePolymorphicAction() returns a
475 // PolymorphicAction<T> where T is the argument's type.
477 PolymorphicAction<ReturnSecondArgumentAction> ReturnSecondArgument() {
478 return MakePolymorphicAction(ReturnSecondArgumentAction());
481 PolymorphicAction<ReturnZeroFromNullaryFunctionAction>
482 ReturnZeroFromNullaryFunction() {
483 return MakePolymorphicAction(ReturnZeroFromNullaryFunctionAction());
486 // Tests that MakePolymorphicAction() turns a polymorphic action
487 // implementation class into a polymorphic action.
488 TEST(MakePolymorphicActionTest, ConstructsActionFromImpl) {
489 Action<int(bool, int, double)> a1 = ReturnSecondArgument(); // NOLINT
490 EXPECT_EQ(5, a1.Perform(std::make_tuple(false, 5, 2.0)));
493 // Tests that MakePolymorphicAction() works when the implementation
494 // class' Perform() method template has only one template parameter.
495 TEST(MakePolymorphicActionTest, WorksWhenPerformHasOneTemplateParameter) {
496 Action<int()> a1 = ReturnZeroFromNullaryFunction();
497 EXPECT_EQ(0, a1.Perform(std::make_tuple()));
499 Action<void*()> a2 = ReturnZeroFromNullaryFunction();
500 EXPECT_TRUE(a2.Perform(std::make_tuple()) == nullptr);
503 // Tests that Return() works as an action for void-returning
505 TEST(ReturnTest, WorksForVoid) {
506 const Action<void(int)> ret = Return(); // NOLINT
507 return ret.Perform(std::make_tuple(1));
510 // Tests that Return(v) returns v.
511 TEST(ReturnTest, ReturnsGivenValue) {
512 Action<int()> ret = Return(1); // NOLINT
513 EXPECT_EQ(1, ret.Perform(std::make_tuple()));
516 EXPECT_EQ(-5, ret.Perform(std::make_tuple()));
519 // Tests that Return("string literal") works.
520 TEST(ReturnTest, AcceptsStringLiteral) {
521 Action<const char*()> a1 = Return("Hello");
522 EXPECT_STREQ("Hello", a1.Perform(std::make_tuple()));
524 Action<std::string()> a2 = Return("world");
525 EXPECT_EQ("world", a2.Perform(std::make_tuple()));
528 // Test struct which wraps a vector of integers. Used in
529 // 'SupportsWrapperReturnType' test.
530 struct IntegerVectorWrapper {
531 std::vector<int> * v;
532 IntegerVectorWrapper(std::vector<int>& _v) : v(&_v) {} // NOLINT
535 // Tests that Return() works when return type is a wrapper type.
536 TEST(ReturnTest, SupportsWrapperReturnType) {
537 // Initialize vector of integers.
539 for (int i = 0; i < 5; ++i) v.push_back(i);
541 // Return() called with 'v' as argument. The Action will return the same data
542 // as 'v' (copy) but it will be wrapped in an IntegerVectorWrapper.
543 Action<IntegerVectorWrapper()> a = Return(v);
544 const std::vector<int>& result = *(a.Perform(std::make_tuple()).v);
545 EXPECT_THAT(result, ::testing::ElementsAre(0, 1, 2, 3, 4));
548 // Tests that Return(v) is covaraint.
551 bool operator==(const Base&) { return true; }
554 struct Derived : public Base {
555 bool operator==(const Derived&) { return true; }
558 TEST(ReturnTest, IsCovariant) {
561 Action<Base*()> ret = Return(&base);
562 EXPECT_EQ(&base, ret.Perform(std::make_tuple()));
564 ret = Return(&derived);
565 EXPECT_EQ(&derived, ret.Perform(std::make_tuple()));
568 // Tests that the type of the value passed into Return is converted into T
569 // when the action is cast to Action<T(...)> rather than when the action is
570 // performed. See comments on testing::internal::ReturnAction in
571 // gmock-actions.h for more information.
574 explicit FromType(bool* is_converted) : converted_(is_converted) {}
575 bool* converted() const { return converted_; }
578 bool* const converted_;
583 // Must allow implicit conversion due to use in ImplicitCast_<T>.
584 ToType(const FromType& x) { *x.converted() = true; } // NOLINT
587 TEST(ReturnTest, ConvertsArgumentWhenConverted) {
588 bool converted = false;
589 FromType x(&converted);
590 Action<ToType()> action(Return(x));
591 EXPECT_TRUE(converted) << "Return must convert its argument in its own "
592 << "conversion operator.";
594 action.Perform(std::tuple<>());
595 EXPECT_FALSE(converted) << "Action must NOT convert its argument "
596 << "when performed.";
599 class DestinationType {};
603 // Note: a non-const typecast operator.
604 operator DestinationType() { return DestinationType(); }
607 TEST(ReturnTest, CanConvertArgumentUsingNonConstTypeCastOperator) {
609 Action<DestinationType()> action(Return(s));
612 // Tests that ReturnNull() returns NULL in a pointer-returning function.
613 TEST(ReturnNullTest, WorksInPointerReturningFunction) {
614 const Action<int*()> a1 = ReturnNull();
615 EXPECT_TRUE(a1.Perform(std::make_tuple()) == nullptr);
617 const Action<const char*(bool)> a2 = ReturnNull(); // NOLINT
618 EXPECT_TRUE(a2.Perform(std::make_tuple(true)) == nullptr);
621 // Tests that ReturnNull() returns NULL for shared_ptr and unique_ptr returning
623 TEST(ReturnNullTest, WorksInSmartPointerReturningFunction) {
624 const Action<std::unique_ptr<const int>()> a1 = ReturnNull();
625 EXPECT_TRUE(a1.Perform(std::make_tuple()) == nullptr);
627 const Action<std::shared_ptr<int>(std::string)> a2 = ReturnNull();
628 EXPECT_TRUE(a2.Perform(std::make_tuple("foo")) == nullptr);
631 // Tests that ReturnRef(v) works for reference types.
632 TEST(ReturnRefTest, WorksForReference) {
634 const Action<const int&(bool)> ret = ReturnRef(n); // NOLINT
636 EXPECT_EQ(&n, &ret.Perform(std::make_tuple(true)));
639 // Tests that ReturnRef(v) is covariant.
640 TEST(ReturnRefTest, IsCovariant) {
643 Action<Base&()> a = ReturnRef(base);
644 EXPECT_EQ(&base, &a.Perform(std::make_tuple()));
646 a = ReturnRef(derived);
647 EXPECT_EQ(&derived, &a.Perform(std::make_tuple()));
650 template <typename T, typename = decltype(ReturnRef(std::declval<T&&>()))>
651 bool CanCallReturnRef(T&&) { return true; }
652 bool CanCallReturnRef(Unused) { return false; }
654 // Tests that ReturnRef(v) is working with non-temporaries (T&)
655 TEST(ReturnRefTest, WorksForNonTemporary) {
656 int scalar_value = 123;
657 EXPECT_TRUE(CanCallReturnRef(scalar_value));
659 std::string non_scalar_value("ABC");
660 EXPECT_TRUE(CanCallReturnRef(non_scalar_value));
662 const int const_scalar_value{321};
663 EXPECT_TRUE(CanCallReturnRef(const_scalar_value));
665 const std::string const_non_scalar_value("CBA");
666 EXPECT_TRUE(CanCallReturnRef(const_non_scalar_value));
669 // Tests that ReturnRef(v) is not working with temporaries (T&&)
670 TEST(ReturnRefTest, DoesNotWorkForTemporary) {
671 auto scalar_value = []() -> int { return 123; };
672 EXPECT_FALSE(CanCallReturnRef(scalar_value()));
674 auto non_scalar_value = []() -> std::string { return "ABC"; };
675 EXPECT_FALSE(CanCallReturnRef(non_scalar_value()));
677 // cannot use here callable returning "const scalar type",
678 // because such const for scalar return type is ignored
679 EXPECT_FALSE(CanCallReturnRef(static_cast<const int>(321)));
681 auto const_non_scalar_value = []() -> const std::string { return "CBA"; };
682 EXPECT_FALSE(CanCallReturnRef(const_non_scalar_value()));
685 // Tests that ReturnRefOfCopy(v) works for reference types.
686 TEST(ReturnRefOfCopyTest, WorksForReference) {
688 const Action<const int&()> ret = ReturnRefOfCopy(n);
690 EXPECT_NE(&n, &ret.Perform(std::make_tuple()));
691 EXPECT_EQ(42, ret.Perform(std::make_tuple()));
694 EXPECT_NE(&n, &ret.Perform(std::make_tuple()));
695 EXPECT_EQ(42, ret.Perform(std::make_tuple()));
698 // Tests that ReturnRefOfCopy(v) is covariant.
699 TEST(ReturnRefOfCopyTest, IsCovariant) {
702 Action<Base&()> a = ReturnRefOfCopy(base);
703 EXPECT_NE(&base, &a.Perform(std::make_tuple()));
705 a = ReturnRefOfCopy(derived);
706 EXPECT_NE(&derived, &a.Perform(std::make_tuple()));
709 // Tests that ReturnRoundRobin(v) works with initializer lists
710 TEST(ReturnRoundRobinTest, WorksForInitList) {
711 Action<int()> ret = ReturnRoundRobin({1, 2, 3});
713 EXPECT_EQ(1, ret.Perform(std::make_tuple()));
714 EXPECT_EQ(2, ret.Perform(std::make_tuple()));
715 EXPECT_EQ(3, ret.Perform(std::make_tuple()));
716 EXPECT_EQ(1, ret.Perform(std::make_tuple()));
717 EXPECT_EQ(2, ret.Perform(std::make_tuple()));
718 EXPECT_EQ(3, ret.Perform(std::make_tuple()));
721 // Tests that ReturnRoundRobin(v) works with vectors
722 TEST(ReturnRoundRobinTest, WorksForVector) {
723 std::vector<double> v = {4.4, 5.5, 6.6};
724 Action<double()> ret = ReturnRoundRobin(v);
726 EXPECT_EQ(4.4, ret.Perform(std::make_tuple()));
727 EXPECT_EQ(5.5, ret.Perform(std::make_tuple()));
728 EXPECT_EQ(6.6, ret.Perform(std::make_tuple()));
729 EXPECT_EQ(4.4, ret.Perform(std::make_tuple()));
730 EXPECT_EQ(5.5, ret.Perform(std::make_tuple()));
731 EXPECT_EQ(6.6, ret.Perform(std::make_tuple()));
734 // Tests that DoDefault() does the default action for the mock method.
740 MOCK_METHOD1(IntFunc, int(bool flag)); // NOLINT
741 MOCK_METHOD0(Foo, MyNonDefaultConstructible());
742 MOCK_METHOD0(MakeUnique, std::unique_ptr<int>());
743 MOCK_METHOD0(MakeUniqueBase, std::unique_ptr<Base>());
744 MOCK_METHOD0(MakeVectorUnique, std::vector<std::unique_ptr<int>>());
745 MOCK_METHOD1(TakeUnique, int(std::unique_ptr<int>));
746 MOCK_METHOD2(TakeUnique,
747 int(const std::unique_ptr<int>&, std::unique_ptr<int>));
750 GTEST_DISALLOW_COPY_AND_ASSIGN_(MockClass);
753 // Tests that DoDefault() returns the built-in default value for the
754 // return type by default.
755 TEST(DoDefaultTest, ReturnsBuiltInDefaultValueByDefault) {
757 EXPECT_CALL(mock, IntFunc(_))
758 .WillOnce(DoDefault());
759 EXPECT_EQ(0, mock.IntFunc(true));
762 // Tests that DoDefault() throws (when exceptions are enabled) or aborts
763 // the process when there is no built-in default value for the return type.
764 TEST(DoDefaultDeathTest, DiesForUnknowType) {
766 EXPECT_CALL(mock, Foo())
767 .WillRepeatedly(DoDefault());
768 #if GTEST_HAS_EXCEPTIONS
769 EXPECT_ANY_THROW(mock.Foo());
771 EXPECT_DEATH_IF_SUPPORTED({
777 // Tests that using DoDefault() inside a composite action leads to a
780 void VoidFunc(bool /* flag */) {}
782 TEST(DoDefaultDeathTest, DiesIfUsedInCompositeAction) {
784 EXPECT_CALL(mock, IntFunc(_))
785 .WillRepeatedly(DoAll(Invoke(VoidFunc),
788 // Ideally we should verify the error message as well. Sadly,
789 // EXPECT_DEATH() can only capture stderr, while Google Mock's
790 // errors are printed on stdout. Therefore we have to settle for
791 // not verifying the message.
792 EXPECT_DEATH_IF_SUPPORTED({
797 // Tests that DoDefault() returns the default value set by
798 // DefaultValue<T>::Set() when it's not overridden by an ON_CALL().
799 TEST(DoDefaultTest, ReturnsUserSpecifiedPerTypeDefaultValueWhenThereIsOne) {
800 DefaultValue<int>::Set(1);
802 EXPECT_CALL(mock, IntFunc(_))
803 .WillOnce(DoDefault());
804 EXPECT_EQ(1, mock.IntFunc(false));
805 DefaultValue<int>::Clear();
808 // Tests that DoDefault() does the action specified by ON_CALL().
809 TEST(DoDefaultTest, DoesWhatOnCallSpecifies) {
811 ON_CALL(mock, IntFunc(_))
812 .WillByDefault(Return(2));
813 EXPECT_CALL(mock, IntFunc(_))
814 .WillOnce(DoDefault());
815 EXPECT_EQ(2, mock.IntFunc(false));
818 // Tests that using DoDefault() in ON_CALL() leads to a run-time failure.
819 TEST(DoDefaultTest, CannotBeUsedInOnCall) {
821 EXPECT_NONFATAL_FAILURE({ // NOLINT
822 ON_CALL(mock, IntFunc(_))
823 .WillByDefault(DoDefault());
824 }, "DoDefault() cannot be used in ON_CALL()");
827 // Tests that SetArgPointee<N>(v) sets the variable pointed to by
828 // the N-th (0-based) argument to v.
829 TEST(SetArgPointeeTest, SetsTheNthPointee) {
830 typedef void MyFunction(bool, int*, char*);
831 Action<MyFunction> a = SetArgPointee<1>(2);
835 a.Perform(std::make_tuple(true, &n, &ch));
839 a = SetArgPointee<2>('a');
842 a.Perform(std::make_tuple(true, &n, &ch));
847 // Tests that SetArgPointee<N>() accepts a string literal.
848 TEST(SetArgPointeeTest, AcceptsStringLiteral) {
849 typedef void MyFunction(std::string*, const char**);
850 Action<MyFunction> a = SetArgPointee<0>("hi");
852 const char* ptr = nullptr;
853 a.Perform(std::make_tuple(&str, &ptr));
854 EXPECT_EQ("hi", str);
855 EXPECT_TRUE(ptr == nullptr);
857 a = SetArgPointee<1>("world");
859 a.Perform(std::make_tuple(&str, &ptr));
861 EXPECT_STREQ("world", ptr);
864 TEST(SetArgPointeeTest, AcceptsWideStringLiteral) {
865 typedef void MyFunction(const wchar_t**);
866 Action<MyFunction> a = SetArgPointee<0>(L"world");
867 const wchar_t* ptr = nullptr;
868 a.Perform(std::make_tuple(&ptr));
869 EXPECT_STREQ(L"world", ptr);
871 # if GTEST_HAS_STD_WSTRING
873 typedef void MyStringFunction(std::wstring*);
874 Action<MyStringFunction> a2 = SetArgPointee<0>(L"world");
875 std::wstring str = L"";
876 a2.Perform(std::make_tuple(&str));
877 EXPECT_EQ(L"world", str);
882 // Tests that SetArgPointee<N>() accepts a char pointer.
883 TEST(SetArgPointeeTest, AcceptsCharPointer) {
884 typedef void MyFunction(bool, std::string*, const char**);
885 const char* const hi = "hi";
886 Action<MyFunction> a = SetArgPointee<1>(hi);
888 const char* ptr = nullptr;
889 a.Perform(std::make_tuple(true, &str, &ptr));
890 EXPECT_EQ("hi", str);
891 EXPECT_TRUE(ptr == nullptr);
893 char world_array[] = "world";
894 char* const world = world_array;
895 a = SetArgPointee<2>(world);
897 a.Perform(std::make_tuple(true, &str, &ptr));
899 EXPECT_EQ(world, ptr);
902 TEST(SetArgPointeeTest, AcceptsWideCharPointer) {
903 typedef void MyFunction(bool, const wchar_t**);
904 const wchar_t* const hi = L"hi";
905 Action<MyFunction> a = SetArgPointee<1>(hi);
906 const wchar_t* ptr = nullptr;
907 a.Perform(std::make_tuple(true, &ptr));
910 # if GTEST_HAS_STD_WSTRING
912 typedef void MyStringFunction(bool, std::wstring*);
913 wchar_t world_array[] = L"world";
914 wchar_t* const world = world_array;
915 Action<MyStringFunction> a2 = SetArgPointee<1>(world);
917 a2.Perform(std::make_tuple(true, &str));
918 EXPECT_EQ(world_array, str);
922 // Tests that SetArgumentPointee<N>(v) sets the variable pointed to by
923 // the N-th (0-based) argument to v.
924 TEST(SetArgumentPointeeTest, SetsTheNthPointee) {
925 typedef void MyFunction(bool, int*, char*);
926 Action<MyFunction> a = SetArgumentPointee<1>(2);
930 a.Perform(std::make_tuple(true, &n, &ch));
934 a = SetArgumentPointee<2>('a');
937 a.Perform(std::make_tuple(true, &n, &ch));
942 // Sample functions and functors for testing Invoke() and etc.
943 int Nullary() { return 1; }
945 class NullaryFunctor {
947 int operator()() { return 2; }
951 void VoidNullary() { g_done = true; }
953 class VoidNullaryFunctor {
955 void operator()() { g_done = true; }
958 short Short(short n) { return n; } // NOLINT
959 char Char(char ch) { return ch; }
961 const char* CharPtr(const char* s) { return s; }
963 bool Unary(int x) { return x < 0; }
965 const char* Binary(const char* input, short n) { return input + n; } // NOLINT
967 void VoidBinary(int, char) { g_done = true; }
969 int Ternary(int x, char y, short z) { return x + y + z; } // NOLINT
971 int SumOf4(int a, int b, int c, int d) { return a + b + c + d; }
975 Foo() : value_(123) {}
977 int Nullary() const { return value_; }
983 // Tests InvokeWithoutArgs(function).
984 TEST(InvokeWithoutArgsTest, Function) {
985 // As an action that takes one argument.
986 Action<int(int)> a = InvokeWithoutArgs(Nullary); // NOLINT
987 EXPECT_EQ(1, a.Perform(std::make_tuple(2)));
989 // As an action that takes two arguments.
990 Action<int(int, double)> a2 = InvokeWithoutArgs(Nullary); // NOLINT
991 EXPECT_EQ(1, a2.Perform(std::make_tuple(2, 3.5)));
993 // As an action that returns void.
994 Action<void(int)> a3 = InvokeWithoutArgs(VoidNullary); // NOLINT
996 a3.Perform(std::make_tuple(1));
1000 // Tests InvokeWithoutArgs(functor).
1001 TEST(InvokeWithoutArgsTest, Functor) {
1002 // As an action that takes no argument.
1003 Action<int()> a = InvokeWithoutArgs(NullaryFunctor()); // NOLINT
1004 EXPECT_EQ(2, a.Perform(std::make_tuple()));
1006 // As an action that takes three arguments.
1007 Action<int(int, double, char)> a2 = // NOLINT
1008 InvokeWithoutArgs(NullaryFunctor());
1009 EXPECT_EQ(2, a2.Perform(std::make_tuple(3, 3.5, 'a')));
1011 // As an action that returns void.
1012 Action<void()> a3 = InvokeWithoutArgs(VoidNullaryFunctor());
1014 a3.Perform(std::make_tuple());
1015 EXPECT_TRUE(g_done);
1018 // Tests InvokeWithoutArgs(obj_ptr, method).
1019 TEST(InvokeWithoutArgsTest, Method) {
1021 Action<int(bool, char)> a = // NOLINT
1022 InvokeWithoutArgs(&foo, &Foo::Nullary);
1023 EXPECT_EQ(123, a.Perform(std::make_tuple(true, 'a')));
1026 // Tests using IgnoreResult() on a polymorphic action.
1027 TEST(IgnoreResultTest, PolymorphicAction) {
1028 Action<void(int)> a = IgnoreResult(Return(5)); // NOLINT
1029 a.Perform(std::make_tuple(1));
1032 // Tests using IgnoreResult() on a monomorphic action.
1039 TEST(IgnoreResultTest, MonomorphicAction) {
1041 Action<void()> a = IgnoreResult(Invoke(ReturnOne));
1042 a.Perform(std::make_tuple());
1043 EXPECT_TRUE(g_done);
1046 // Tests using IgnoreResult() on an action that returns a class type.
1048 MyNonDefaultConstructible ReturnMyNonDefaultConstructible(double /* x */) {
1050 return MyNonDefaultConstructible(42);
1053 TEST(IgnoreResultTest, ActionReturningClass) {
1055 Action<void(int)> a =
1056 IgnoreResult(Invoke(ReturnMyNonDefaultConstructible)); // NOLINT
1057 a.Perform(std::make_tuple(2));
1058 EXPECT_TRUE(g_done);
1061 TEST(AssignTest, Int) {
1063 Action<void(int)> a = Assign(&x, 5);
1064 a.Perform(std::make_tuple(0));
1068 TEST(AssignTest, String) {
1070 Action<void(void)> a = Assign(&x, "Hello, world");
1071 a.Perform(std::make_tuple());
1072 EXPECT_EQ("Hello, world", x);
1075 TEST(AssignTest, CompatibleTypes) {
1077 Action<void(int)> a = Assign(&x, 5);
1078 a.Perform(std::make_tuple(0));
1079 EXPECT_DOUBLE_EQ(5, x);
1083 // Tests using WithArgs and with an action that takes 1 argument.
1084 TEST(WithArgsTest, OneArg) {
1085 Action<bool(double x, int n)> a = WithArgs<1>(Invoke(Unary)); // NOLINT
1086 EXPECT_TRUE(a.Perform(std::make_tuple(1.5, -1)));
1087 EXPECT_FALSE(a.Perform(std::make_tuple(1.5, 1)));
1090 // Tests using WithArgs with an action that takes 2 arguments.
1091 TEST(WithArgsTest, TwoArgs) {
1092 Action<const char*(const char* s, double x, short n)> a = // NOLINT
1093 WithArgs<0, 2>(Invoke(Binary));
1094 const char s[] = "Hello";
1095 EXPECT_EQ(s + 2, a.Perform(std::make_tuple(CharPtr(s), 0.5, Short(2))));
1099 std::string operator()() const { return {}; }
1100 template <typename... I>
1101 std::string operator()(const char* a, I... i) const {
1102 return a + ConcatAll()(i...);
1106 // Tests using WithArgs with an action that takes 10 arguments.
1107 TEST(WithArgsTest, TenArgs) {
1108 Action<std::string(const char*, const char*, const char*, const char*)> a =
1109 WithArgs<0, 1, 2, 3, 2, 1, 0, 1, 2, 3>(Invoke(ConcatAll{}));
1110 EXPECT_EQ("0123210123",
1111 a.Perform(std::make_tuple(CharPtr("0"), CharPtr("1"), CharPtr("2"),
1115 // Tests using WithArgs with an action that is not Invoke().
1116 class SubtractAction : public ActionInterface<int(int, int)> {
1118 int Perform(const std::tuple<int, int>& args) override {
1119 return std::get<0>(args) - std::get<1>(args);
1123 TEST(WithArgsTest, NonInvokeAction) {
1124 Action<int(const std::string&, int, int)> a =
1125 WithArgs<2, 1>(MakeAction(new SubtractAction));
1126 std::tuple<std::string, int, int> dummy =
1127 std::make_tuple(std::string("hi"), 2, 10);
1128 EXPECT_EQ(8, a.Perform(dummy));
1131 // Tests using WithArgs to pass all original arguments in the original order.
1132 TEST(WithArgsTest, Identity) {
1133 Action<int(int x, char y, short z)> a = // NOLINT
1134 WithArgs<0, 1, 2>(Invoke(Ternary));
1135 EXPECT_EQ(123, a.Perform(std::make_tuple(100, Char(20), Short(3))));
1138 // Tests using WithArgs with repeated arguments.
1139 TEST(WithArgsTest, RepeatedArguments) {
1140 Action<int(bool, int m, int n)> a = // NOLINT
1141 WithArgs<1, 1, 1, 1>(Invoke(SumOf4));
1142 EXPECT_EQ(4, a.Perform(std::make_tuple(false, 1, 10)));
1145 // Tests using WithArgs with reversed argument order.
1146 TEST(WithArgsTest, ReversedArgumentOrder) {
1147 Action<const char*(short n, const char* input)> a = // NOLINT
1148 WithArgs<1, 0>(Invoke(Binary));
1149 const char s[] = "Hello";
1150 EXPECT_EQ(s + 2, a.Perform(std::make_tuple(Short(2), CharPtr(s))));
1153 // Tests using WithArgs with compatible, but not identical, argument types.
1154 TEST(WithArgsTest, ArgsOfCompatibleTypes) {
1155 Action<long(short x, char y, double z, char c)> a = // NOLINT
1156 WithArgs<0, 1, 3>(Invoke(Ternary));
1158 a.Perform(std::make_tuple(Short(100), Char(20), 5.6, Char(3))));
1161 // Tests using WithArgs with an action that returns void.
1162 TEST(WithArgsTest, VoidAction) {
1163 Action<void(double x, char c, int n)> a = WithArgs<2, 1>(Invoke(VoidBinary));
1165 a.Perform(std::make_tuple(1.5, 'a', 3));
1166 EXPECT_TRUE(g_done);
1169 TEST(WithArgsTest, ReturnReference) {
1170 Action<int&(int&, void*)> aa = WithArgs<0>([](int& a) -> int& { return a; });
1172 const int& res = aa.Perform(std::forward_as_tuple(i, nullptr));
1173 EXPECT_EQ(&i, &res);
1176 TEST(WithArgsTest, InnerActionWithConversion) {
1177 Action<Derived*()> inner = [] { return nullptr; };
1178 Action<Base*(double)> a = testing::WithoutArgs(inner);
1179 EXPECT_EQ(nullptr, a.Perform(std::make_tuple(1.1)));
1182 #if !GTEST_OS_WINDOWS_MOBILE
1184 class SetErrnoAndReturnTest : public testing::Test {
1186 void SetUp() override { errno = 0; }
1187 void TearDown() override { errno = 0; }
1190 TEST_F(SetErrnoAndReturnTest, Int) {
1191 Action<int(void)> a = SetErrnoAndReturn(ENOTTY, -5);
1192 EXPECT_EQ(-5, a.Perform(std::make_tuple()));
1193 EXPECT_EQ(ENOTTY, errno);
1196 TEST_F(SetErrnoAndReturnTest, Ptr) {
1198 Action<int*(void)> a = SetErrnoAndReturn(ENOTTY, &x);
1199 EXPECT_EQ(&x, a.Perform(std::make_tuple()));
1200 EXPECT_EQ(ENOTTY, errno);
1203 TEST_F(SetErrnoAndReturnTest, CompatibleTypes) {
1204 Action<double()> a = SetErrnoAndReturn(EINVAL, 5);
1205 EXPECT_DOUBLE_EQ(5.0, a.Perform(std::make_tuple()));
1206 EXPECT_EQ(EINVAL, errno);
1209 #endif // !GTEST_OS_WINDOWS_MOBILE
1213 // Tests that the result of ByRef() is copyable.
1214 TEST(ByRefTest, IsCopyable) {
1215 const std::string s1 = "Hi";
1216 const std::string s2 = "Hello";
1218 auto ref_wrapper = ByRef(s1);
1219 const std::string& r1 = ref_wrapper;
1220 EXPECT_EQ(&s1, &r1);
1222 // Assigns a new value to ref_wrapper.
1223 ref_wrapper = ByRef(s2);
1224 const std::string& r2 = ref_wrapper;
1225 EXPECT_EQ(&s2, &r2);
1227 auto ref_wrapper1 = ByRef(s1);
1228 // Copies ref_wrapper1 to ref_wrapper.
1229 ref_wrapper = ref_wrapper1;
1230 const std::string& r3 = ref_wrapper;
1231 EXPECT_EQ(&s1, &r3);
1234 // Tests using ByRef() on a const value.
1235 TEST(ByRefTest, ConstValue) {
1237 // int& ref = ByRef(n); // This shouldn't compile - we have a
1238 // negative compilation test to catch it.
1239 const int& const_ref = ByRef(n);
1240 EXPECT_EQ(&n, &const_ref);
1243 // Tests using ByRef() on a non-const value.
1244 TEST(ByRefTest, NonConstValue) {
1247 // ByRef(n) can be used as either an int&,
1248 int& ref = ByRef(n);
1249 EXPECT_EQ(&n, &ref);
1252 const int& const_ref = ByRef(n);
1253 EXPECT_EQ(&n, &const_ref);
1256 // Tests explicitly specifying the type when using ByRef().
1257 TEST(ByRefTest, ExplicitType) {
1259 const int& r1 = ByRef<const int>(n);
1262 // ByRef<char>(n); // This shouldn't compile - we have a negative
1263 // compilation test to catch it.
1266 Derived& r2 = ByRef<Derived>(d);
1269 const Derived& r3 = ByRef<const Derived>(d);
1272 Base& r4 = ByRef<Base>(d);
1275 const Base& r5 = ByRef<const Base>(d);
1278 // The following shouldn't compile - we have a negative compilation
1282 // ByRef<Derived>(b);
1285 // Tests that Google Mock prints expression ByRef(x) as a reference to x.
1286 TEST(ByRefTest, PrintsCorrectly) {
1288 ::std::stringstream expected, actual;
1289 testing::internal::UniversalPrinter<const int&>::Print(n, &expected);
1290 testing::internal::UniversalPrint(ByRef(n), &actual);
1291 EXPECT_EQ(expected.str(), actual.str());
1294 struct UnaryConstructorClass {
1295 explicit UnaryConstructorClass(int v) : value(v) {}
1299 // Tests using ReturnNew() with a unary constructor.
1300 TEST(ReturnNewTest, Unary) {
1301 Action<UnaryConstructorClass*()> a = ReturnNew<UnaryConstructorClass>(4000);
1302 UnaryConstructorClass* c = a.Perform(std::make_tuple());
1303 EXPECT_EQ(4000, c->value);
1307 TEST(ReturnNewTest, UnaryWorksWhenMockMethodHasArgs) {
1308 Action<UnaryConstructorClass*(bool, int)> a =
1309 ReturnNew<UnaryConstructorClass>(4000);
1310 UnaryConstructorClass* c = a.Perform(std::make_tuple(false, 5));
1311 EXPECT_EQ(4000, c->value);
1315 TEST(ReturnNewTest, UnaryWorksWhenMockMethodReturnsPointerToConst) {
1316 Action<const UnaryConstructorClass*()> a =
1317 ReturnNew<UnaryConstructorClass>(4000);
1318 const UnaryConstructorClass* c = a.Perform(std::make_tuple());
1319 EXPECT_EQ(4000, c->value);
1323 class TenArgConstructorClass {
1325 TenArgConstructorClass(int a1, int a2, int a3, int a4, int a5, int a6, int a7,
1326 int a8, int a9, int a10)
1327 : value_(a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10) {}
1331 // Tests using ReturnNew() with a 10-argument constructor.
1332 TEST(ReturnNewTest, ConstructorThatTakes10Arguments) {
1333 Action<TenArgConstructorClass*()> a = ReturnNew<TenArgConstructorClass>(
1334 1000000000, 200000000, 30000000, 4000000, 500000, 60000, 7000, 800, 90,
1336 TenArgConstructorClass* c = a.Perform(std::make_tuple());
1337 EXPECT_EQ(1234567890, c->value_);
1341 std::unique_ptr<int> UniquePtrSource() {
1342 return std::unique_ptr<int>(new int(19));
1345 std::vector<std::unique_ptr<int>> VectorUniquePtrSource() {
1346 std::vector<std::unique_ptr<int>> out;
1347 out.emplace_back(new int(7));
1351 TEST(MockMethodTest, CanReturnMoveOnlyValue_Return) {
1353 std::unique_ptr<int> i(new int(19));
1354 EXPECT_CALL(mock, MakeUnique()).WillOnce(Return(ByMove(std::move(i))));
1355 EXPECT_CALL(mock, MakeVectorUnique())
1356 .WillOnce(Return(ByMove(VectorUniquePtrSource())));
1357 Derived* d = new Derived;
1358 EXPECT_CALL(mock, MakeUniqueBase())
1359 .WillOnce(Return(ByMove(std::unique_ptr<Derived>(d))));
1361 std::unique_ptr<int> result1 = mock.MakeUnique();
1362 EXPECT_EQ(19, *result1);
1364 std::vector<std::unique_ptr<int>> vresult = mock.MakeVectorUnique();
1365 EXPECT_EQ(1u, vresult.size());
1366 EXPECT_NE(nullptr, vresult[0]);
1367 EXPECT_EQ(7, *vresult[0]);
1369 std::unique_ptr<Base> result2 = mock.MakeUniqueBase();
1370 EXPECT_EQ(d, result2.get());
1373 TEST(MockMethodTest, CanReturnMoveOnlyValue_DoAllReturn) {
1374 testing::MockFunction<void()> mock_function;
1376 std::unique_ptr<int> i(new int(19));
1377 EXPECT_CALL(mock_function, Call());
1378 EXPECT_CALL(mock, MakeUnique()).WillOnce(DoAll(
1379 InvokeWithoutArgs(&mock_function, &testing::MockFunction<void()>::Call),
1380 Return(ByMove(std::move(i)))));
1382 std::unique_ptr<int> result1 = mock.MakeUnique();
1383 EXPECT_EQ(19, *result1);
1386 TEST(MockMethodTest, CanReturnMoveOnlyValue_Invoke) {
1389 // Check default value
1390 DefaultValue<std::unique_ptr<int>>::SetFactory([] {
1391 return std::unique_ptr<int>(new int(42));
1393 EXPECT_EQ(42, *mock.MakeUnique());
1395 EXPECT_CALL(mock, MakeUnique()).WillRepeatedly(Invoke(UniquePtrSource));
1396 EXPECT_CALL(mock, MakeVectorUnique())
1397 .WillRepeatedly(Invoke(VectorUniquePtrSource));
1398 std::unique_ptr<int> result1 = mock.MakeUnique();
1399 EXPECT_EQ(19, *result1);
1400 std::unique_ptr<int> result2 = mock.MakeUnique();
1401 EXPECT_EQ(19, *result2);
1402 EXPECT_NE(result1, result2);
1404 std::vector<std::unique_ptr<int>> vresult = mock.MakeVectorUnique();
1405 EXPECT_EQ(1u, vresult.size());
1406 EXPECT_NE(nullptr, vresult[0]);
1407 EXPECT_EQ(7, *vresult[0]);
1410 TEST(MockMethodTest, CanTakeMoveOnlyValue) {
1412 auto make = [](int i) { return std::unique_ptr<int>(new int(i)); };
1414 EXPECT_CALL(mock, TakeUnique(_)).WillRepeatedly([](std::unique_ptr<int> i) {
1417 // DoAll() does not compile, since it would move from its arguments twice.
1418 // EXPECT_CALL(mock, TakeUnique(_, _))
1419 // .WillRepeatedly(DoAll(Invoke([](std::unique_ptr<int> j) {}),
1421 EXPECT_CALL(mock, TakeUnique(testing::Pointee(7)))
1422 .WillOnce(Return(-7))
1423 .RetiresOnSaturation();
1424 EXPECT_CALL(mock, TakeUnique(testing::IsNull()))
1425 .WillOnce(Return(-1))
1426 .RetiresOnSaturation();
1428 EXPECT_EQ(5, mock.TakeUnique(make(5)));
1429 EXPECT_EQ(-7, mock.TakeUnique(make(7)));
1430 EXPECT_EQ(7, mock.TakeUnique(make(7)));
1431 EXPECT_EQ(7, mock.TakeUnique(make(7)));
1432 EXPECT_EQ(-1, mock.TakeUnique({}));
1434 // Some arguments are moved, some passed by reference.
1435 auto lvalue = make(6);
1436 EXPECT_CALL(mock, TakeUnique(_, _))
1437 .WillOnce([](const std::unique_ptr<int>& i, std::unique_ptr<int> j) {
1440 EXPECT_EQ(42, mock.TakeUnique(lvalue, make(7)));
1442 // The unique_ptr can be saved by the action.
1443 std::unique_ptr<int> saved;
1444 EXPECT_CALL(mock, TakeUnique(_)).WillOnce([&saved](std::unique_ptr<int> i) {
1445 saved = std::move(i);
1448 EXPECT_EQ(0, mock.TakeUnique(make(42)));
1449 EXPECT_EQ(42, *saved);
1453 // Tests for std::function based action.
1455 int Add(int val, int& ref, int* ptr) { // NOLINT
1456 int result = val + ref + *ptr;
1462 int Deref(std::unique_ptr<int> ptr) { return *ptr; }
1465 template <typename T>
1466 T operator()(T t) { return 2 * t; }
1469 std::unique_ptr<int> UniqueInt(int i) {
1470 return std::unique_ptr<int>(new int(i));
1473 TEST(FunctorActionTest, ActionFromFunction) {
1474 Action<int(int, int&, int*)> a = &Add;
1475 int x = 1, y = 2, z = 3;
1476 EXPECT_EQ(6, a.Perform(std::forward_as_tuple(x, y, &z)));
1480 Action<int(std::unique_ptr<int>)> a1 = &Deref;
1481 EXPECT_EQ(7, a1.Perform(std::make_tuple(UniqueInt(7))));
1484 TEST(FunctorActionTest, ActionFromLambda) {
1485 Action<int(bool, int)> a1 = [](bool b, int i) { return b ? i : 0; };
1486 EXPECT_EQ(5, a1.Perform(std::make_tuple(true, 5)));
1487 EXPECT_EQ(0, a1.Perform(std::make_tuple(false, 5)));
1489 std::unique_ptr<int> saved;
1490 Action<void(std::unique_ptr<int>)> a2 = [&saved](std::unique_ptr<int> p) {
1491 saved = std::move(p);
1493 a2.Perform(std::make_tuple(UniqueInt(5)));
1494 EXPECT_EQ(5, *saved);
1497 TEST(FunctorActionTest, PolymorphicFunctor) {
1498 Action<int(int)> ai = Double();
1499 EXPECT_EQ(2, ai.Perform(std::make_tuple(1)));
1500 Action<double(double)> ad = Double(); // Double? Double double!
1501 EXPECT_EQ(3.0, ad.Perform(std::make_tuple(1.5)));
1504 TEST(FunctorActionTest, TypeConversion) {
1505 // Numeric promotions are allowed.
1506 const Action<bool(int)> a1 = [](int i) { return i > 1; };
1507 const Action<int(bool)> a2 = Action<int(bool)>(a1);
1508 EXPECT_EQ(1, a1.Perform(std::make_tuple(42)));
1509 EXPECT_EQ(0, a2.Perform(std::make_tuple(42)));
1511 // Implicit constructors are allowed.
1512 const Action<bool(std::string)> s1 = [](std::string s) { return !s.empty(); };
1513 const Action<int(const char*)> s2 = Action<int(const char*)>(s1);
1514 EXPECT_EQ(0, s2.Perform(std::make_tuple("")));
1515 EXPECT_EQ(1, s2.Perform(std::make_tuple("hello")));
1517 // Also between the lambda and the action itself.
1518 const Action<bool(std::string)> x1 = [](Unused) { return 42; };
1519 const Action<bool(std::string)> x2 = [] { return 42; };
1520 EXPECT_TRUE(x1.Perform(std::make_tuple("hello")));
1521 EXPECT_TRUE(x2.Perform(std::make_tuple("hello")));
1523 // Ensure decay occurs where required.
1524 std::function<int()> f = [] { return 7; };
1525 Action<int(int)> d = f;
1527 EXPECT_EQ(7, d.Perform(std::make_tuple(1)));
1529 // Ensure creation of an empty action succeeds.
1530 Action<void(int)>(nullptr);
1533 TEST(FunctorActionTest, UnusedArguments) {
1534 // Verify that users can ignore uninteresting arguments.
1535 Action<int(int, double y, double z)> a =
1536 [](int i, Unused, Unused) { return 2 * i; };
1537 std::tuple<int, double, double> dummy = std::make_tuple(3, 7.3, 9.44);
1538 EXPECT_EQ(6, a.Perform(dummy));
1541 // Test that basic built-in actions work with move-only arguments.
1542 TEST(MoveOnlyArgumentsTest, ReturningActions) {
1543 Action<int(std::unique_ptr<int>)> a = Return(1);
1544 EXPECT_EQ(1, a.Perform(std::make_tuple(nullptr)));
1546 a = testing::WithoutArgs([]() { return 7; });
1547 EXPECT_EQ(7, a.Perform(std::make_tuple(nullptr)));
1549 Action<void(std::unique_ptr<int>, int*)> a2 = testing::SetArgPointee<1>(3);
1551 a2.Perform(std::make_tuple(nullptr, &x));
1555 ACTION(ReturnArity) {
1556 return std::tuple_size<args_type>::value;
1559 TEST(ActionMacro, LargeArity) {
1561 1, testing::Action<int(int)>(ReturnArity()).Perform(std::make_tuple(0)));
1564 testing::Action<int(int, int, int, int, int, int, int, int, int, int)>(
1566 .Perform(std::make_tuple(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)));
1569 testing::Action<int(int, int, int, int, int, int, int, int, int, int, int,
1570 int, int, int, int, int, int, int, int, int)>(
1572 .Perform(std::make_tuple(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13,
1573 14, 15, 16, 17, 18, 19)));
1576 } // Unnamed namespace
1579 #if _MSC_VER == 1900
1580 # pragma warning(pop)