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30 // Author: wan@google.com (Zhanyong Wan)
32 // Google Mock - a framework for writing C++ mock classes.
34 // This file implements some actions that depend on gmock-generated-actions.h.
36 #ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
37 #define GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
41 #include "gmock/gmock-generated-actions.h"
46 // Implements the Invoke(f) action. The template argument
47 // FunctionImpl is the implementation type of f, which can be either a
48 // function pointer or a functor. Invoke(f) can be used as an
49 // Action<F> as long as f's type is compatible with F (i.e. f can be
50 // assigned to a tr1::function<F>).
51 template <typename FunctionImpl
>
54 // The c'tor makes a copy of function_impl (either a function
55 // pointer or a functor).
56 explicit InvokeAction(FunctionImpl function_impl
)
57 : function_impl_(function_impl
) {}
59 template <typename Result
, typename ArgumentTuple
>
60 Result
Perform(const ArgumentTuple
& args
) {
61 return InvokeHelper
<Result
, ArgumentTuple
>::Invoke(function_impl_
, args
);
65 FunctionImpl function_impl_
;
67 GTEST_DISALLOW_ASSIGN_(InvokeAction
);
70 // Implements the Invoke(object_ptr, &Class::Method) action.
71 template <class Class
, typename MethodPtr
>
72 class InvokeMethodAction
{
74 InvokeMethodAction(Class
* obj_ptr
, MethodPtr method_ptr
)
75 : method_ptr_(method_ptr
), obj_ptr_(obj_ptr
) {}
77 template <typename Result
, typename ArgumentTuple
>
78 Result
Perform(const ArgumentTuple
& args
) const {
79 return InvokeHelper
<Result
, ArgumentTuple
>::InvokeMethod(
80 obj_ptr_
, method_ptr_
, args
);
84 // The order of these members matters. Reversing the order can trigger
85 // warning C4121 in MSVC (see
86 // http://computer-programming-forum.com/7-vc.net/6fbc30265f860ad1.htm ).
87 const MethodPtr method_ptr_
;
88 Class
* const obj_ptr_
;
90 GTEST_DISALLOW_ASSIGN_(InvokeMethodAction
);
93 // An internal replacement for std::copy which mimics its behavior. This is
94 // necessary because Visual Studio deprecates ::std::copy, issuing warning 4996.
95 // However Visual Studio 2010 and later do not honor #pragmas which disable that
97 template<typename InputIterator
, typename OutputIterator
>
98 inline OutputIterator
CopyElements(InputIterator first
,
100 OutputIterator output
) {
101 for (; first
!= last
; ++first
, ++output
) {
107 } // namespace internal
109 // Various overloads for Invoke().
111 // Creates an action that invokes 'function_impl' with the mock
112 // function's arguments.
113 template <typename FunctionImpl
>
114 PolymorphicAction
<internal::InvokeAction
<FunctionImpl
> > Invoke(
115 FunctionImpl function_impl
) {
116 return MakePolymorphicAction(
117 internal::InvokeAction
<FunctionImpl
>(function_impl
));
120 // Creates an action that invokes the given method on the given object
121 // with the mock function's arguments.
122 template <class Class
, typename MethodPtr
>
123 PolymorphicAction
<internal::InvokeMethodAction
<Class
, MethodPtr
> > Invoke(
124 Class
* obj_ptr
, MethodPtr method_ptr
) {
125 return MakePolymorphicAction(
126 internal::InvokeMethodAction
<Class
, MethodPtr
>(obj_ptr
, method_ptr
));
129 // WithoutArgs(inner_action) can be used in a mock function with a
130 // non-empty argument list to perform inner_action, which takes no
131 // argument. In other words, it adapts an action accepting no
132 // argument to one that accepts (and ignores) arguments.
133 template <typename InnerAction
>
134 inline internal::WithArgsAction
<InnerAction
>
135 WithoutArgs(const InnerAction
& action
) {
136 return internal::WithArgsAction
<InnerAction
>(action
);
139 // WithArg<k>(an_action) creates an action that passes the k-th
140 // (0-based) argument of the mock function to an_action and performs
141 // it. It adapts an action accepting one argument to one that accepts
142 // multiple arguments. For convenience, we also provide
143 // WithArgs<k>(an_action) (defined below) as a synonym.
144 template <int k
, typename InnerAction
>
145 inline internal::WithArgsAction
<InnerAction
, k
>
146 WithArg(const InnerAction
& action
) {
147 return internal::WithArgsAction
<InnerAction
, k
>(action
);
150 // The ACTION*() macros trigger warning C4100 (unreferenced formal
151 // parameter) in MSVC with -W4. Unfortunately they cannot be fixed in
152 // the macro definition, as the warnings are generated when the macro
153 // is expanded and macro expansion cannot contain #pragma. Therefore
154 // we suppress them here.
156 # pragma warning(push)
157 # pragma warning(disable:4100)
160 // Action ReturnArg<k>() returns the k-th argument of the mock function.
161 ACTION_TEMPLATE(ReturnArg
,
162 HAS_1_TEMPLATE_PARAMS(int, k
),
163 AND_0_VALUE_PARAMS()) {
164 return ::testing::get
<k
>(args
);
167 // Action SaveArg<k>(pointer) saves the k-th (0-based) argument of the
168 // mock function to *pointer.
169 ACTION_TEMPLATE(SaveArg
,
170 HAS_1_TEMPLATE_PARAMS(int, k
),
171 AND_1_VALUE_PARAMS(pointer
)) {
172 *pointer
= ::testing::get
<k
>(args
);
175 // Action SaveArgPointee<k>(pointer) saves the value pointed to
176 // by the k-th (0-based) argument of the mock function to *pointer.
177 ACTION_TEMPLATE(SaveArgPointee
,
178 HAS_1_TEMPLATE_PARAMS(int, k
),
179 AND_1_VALUE_PARAMS(pointer
)) {
180 *pointer
= *::testing::get
<k
>(args
);
183 // Action SetArgReferee<k>(value) assigns 'value' to the variable
184 // referenced by the k-th (0-based) argument of the mock function.
185 ACTION_TEMPLATE(SetArgReferee
,
186 HAS_1_TEMPLATE_PARAMS(int, k
),
187 AND_1_VALUE_PARAMS(value
)) {
188 typedef typename ::testing::tuple_element
<k
, args_type
>::type argk_type
;
189 // Ensures that argument #k is a reference. If you get a compiler
190 // error on the next line, you are using SetArgReferee<k>(value) in
191 // a mock function whose k-th (0-based) argument is not a reference.
192 GTEST_COMPILE_ASSERT_(internal::is_reference
<argk_type
>::value
,
193 SetArgReferee_must_be_used_with_a_reference_argument
);
194 ::testing::get
<k
>(args
) = value
;
197 // Action SetArrayArgument<k>(first, last) copies the elements in
198 // source range [first, last) to the array pointed to by the k-th
199 // (0-based) argument, which can be either a pointer or an
200 // iterator. The action does not take ownership of the elements in the
202 ACTION_TEMPLATE(SetArrayArgument
,
203 HAS_1_TEMPLATE_PARAMS(int, k
),
204 AND_2_VALUE_PARAMS(first
, last
)) {
205 // Visual Studio deprecates ::std::copy, so we use our own copy in that case.
207 internal::CopyElements(first
, last
, ::testing::get
<k
>(args
));
209 ::std::copy(first
, last
, ::testing::get
<k
>(args
));
213 // Action DeleteArg<k>() deletes the k-th (0-based) argument of the mock
215 ACTION_TEMPLATE(DeleteArg
,
216 HAS_1_TEMPLATE_PARAMS(int, k
),
217 AND_0_VALUE_PARAMS()) {
218 delete ::testing::get
<k
>(args
);
221 // This action returns the value pointed to by 'pointer'.
222 ACTION_P(ReturnPointee
, pointer
) { return *pointer
; }
224 // Action Throw(exception) can be used in a mock function of any type
225 // to throw the given exception. Any copyable value can be thrown.
226 #if GTEST_HAS_EXCEPTIONS
228 // Suppresses the 'unreachable code' warning that VC generates in opt modes.
230 # pragma warning(push) // Saves the current warning state.
231 # pragma warning(disable:4702) // Temporarily disables warning 4702.
233 ACTION_P(Throw
, exception
) { throw exception
; }
235 # pragma warning(pop) // Restores the warning state.
238 #endif // GTEST_HAS_EXCEPTIONS
241 # pragma warning(pop)
244 } // namespace testing
246 #endif // GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_