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// Copyright 2007, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Author: wan@google.com (Zhanyong Wan)
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// Google Mock - a framework for writing C++ mock classes.
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//
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// This file implements some actions that depend on gmock-generated-actions.h.
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#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
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#define GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
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#include <algorithm>
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#include "gmock/gmock-generated-actions.h"
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namespace testing {
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namespace internal {
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// Implements the Invoke(f) action. The template argument
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// FunctionImpl is the implementation type of f, which can be either a
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// function pointer or a functor. Invoke(f) can be used as an
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// Action<F> as long as f's type is compatible with F (i.e. f can be
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// assigned to a tr1::function<F>).
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template <typename FunctionImpl>
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class InvokeAction {
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public:
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// The c'tor makes a copy of function_impl (either a function
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// pointer or a functor).
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explicit InvokeAction(FunctionImpl function_impl)
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: function_impl_(function_impl) {}
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template <typename Result, typename ArgumentTuple>
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Result Perform(const ArgumentTuple& args) {
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return InvokeHelper<Result, ArgumentTuple>::Invoke(function_impl_, args);
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}
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private:
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FunctionImpl function_impl_;
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GTEST_DISALLOW_ASSIGN_(InvokeAction);
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};
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// Implements the Invoke(object_ptr, &Class::Method) action.
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template <class Class, typename MethodPtr>
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class InvokeMethodAction {
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public:
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InvokeMethodAction(Class* obj_ptr, MethodPtr method_ptr)
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: method_ptr_(method_ptr), obj_ptr_(obj_ptr) {}
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template <typename Result, typename ArgumentTuple>
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Result Perform(const ArgumentTuple& args) const {
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return InvokeHelper<Result, ArgumentTuple>::InvokeMethod(
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obj_ptr_, method_ptr_, args);
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}
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private:
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// The order of these members matters. Reversing the order can trigger
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// warning C4121 in MSVC (see
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// http://computer-programming-forum.com/7-vc.net/6fbc30265f860ad1.htm ).
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const MethodPtr method_ptr_;
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Class* const obj_ptr_;
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GTEST_DISALLOW_ASSIGN_(InvokeMethodAction);
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};
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// An internal replacement for std::copy which mimics its behavior. This is
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// necessary because Visual Studio deprecates ::std::copy, issuing warning 4996.
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// However Visual Studio 2010 and later do not honor #pragmas which disable that
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// warning.
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template<typename InputIterator, typename OutputIterator>
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inline OutputIterator CopyElements(InputIterator first,
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InputIterator last,
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OutputIterator output) {
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for (; first != last; ++first, ++output) {
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*output = *first;
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}
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return output;
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}
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} // namespace internal
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// Various overloads for Invoke().
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// Creates an action that invokes 'function_impl' with the mock
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// function's arguments.
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template <typename FunctionImpl>
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PolymorphicAction<internal::InvokeAction<FunctionImpl> > Invoke(
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FunctionImpl function_impl) {
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return MakePolymorphicAction(
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internal::InvokeAction<FunctionImpl>(function_impl));
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}
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// Creates an action that invokes the given method on the given object
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// with the mock function's arguments.
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template <class Class, typename MethodPtr>
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PolymorphicAction<internal::InvokeMethodAction<Class, MethodPtr> > Invoke(
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Class* obj_ptr, MethodPtr method_ptr) {
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return MakePolymorphicAction(
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internal::InvokeMethodAction<Class, MethodPtr>(obj_ptr, method_ptr));
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}
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// WithoutArgs(inner_action) can be used in a mock function with a
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// non-empty argument list to perform inner_action, which takes no
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// argument. In other words, it adapts an action accepting no
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// argument to one that accepts (and ignores) arguments.
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template <typename InnerAction>
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inline internal::WithArgsAction<InnerAction>
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WithoutArgs(const InnerAction& action) {
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return internal::WithArgsAction<InnerAction>(action);
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}
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// WithArg<k>(an_action) creates an action that passes the k-th
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// (0-based) argument of the mock function to an_action and performs
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// it. It adapts an action accepting one argument to one that accepts
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// multiple arguments. For convenience, we also provide
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// WithArgs<k>(an_action) (defined below) as a synonym.
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template <int k, typename InnerAction>
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inline internal::WithArgsAction<InnerAction, k>
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WithArg(const InnerAction& action) {
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return internal::WithArgsAction<InnerAction, k>(action);
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}
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// The ACTION*() macros trigger warning C4100 (unreferenced formal
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// parameter) in MSVC with -W4. Unfortunately they cannot be fixed in
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// the macro definition, as the warnings are generated when the macro
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// is expanded and macro expansion cannot contain #pragma. Therefore
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// we suppress them here.
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable:4100)
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#endif
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// Action ReturnArg<k>() returns the k-th argument of the mock function.
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ACTION_TEMPLATE(ReturnArg,
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HAS_1_TEMPLATE_PARAMS(int, k),
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AND_0_VALUE_PARAMS()) {
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return ::testing::get<k>(args);
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}
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// Action SaveArg<k>(pointer) saves the k-th (0-based) argument of the
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// mock function to *pointer.
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ACTION_TEMPLATE(SaveArg,
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HAS_1_TEMPLATE_PARAMS(int, k),
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AND_1_VALUE_PARAMS(pointer)) {
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*pointer = ::testing::get<k>(args);
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}
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// Action SaveArgPointee<k>(pointer) saves the value pointed to
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// by the k-th (0-based) argument of the mock function to *pointer.
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ACTION_TEMPLATE(SaveArgPointee,
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HAS_1_TEMPLATE_PARAMS(int, k),
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AND_1_VALUE_PARAMS(pointer)) {
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*pointer = *::testing::get<k>(args);
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}
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// Action SetArgReferee<k>(value) assigns 'value' to the variable
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// referenced by the k-th (0-based) argument of the mock function.
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ACTION_TEMPLATE(SetArgReferee,
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HAS_1_TEMPLATE_PARAMS(int, k),
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AND_1_VALUE_PARAMS(value)) {
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typedef typename ::testing::tuple_element<k, args_type>::type argk_type;
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// Ensures that argument #k is a reference. If you get a compiler
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// error on the next line, you are using SetArgReferee<k>(value) in
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// a mock function whose k-th (0-based) argument is not a reference.
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GTEST_COMPILE_ASSERT_(internal::is_reference<argk_type>::value,
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SetArgReferee_must_be_used_with_a_reference_argument);
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::testing::get<k>(args) = value;
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}
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// Action SetArrayArgument<k>(first, last) copies the elements in
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// source range [first, last) to the array pointed to by the k-th
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// (0-based) argument, which can be either a pointer or an
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// iterator. The action does not take ownership of the elements in the
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// source range.
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ACTION_TEMPLATE(SetArrayArgument,
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HAS_1_TEMPLATE_PARAMS(int, k),
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AND_2_VALUE_PARAMS(first, last)) {
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// Visual Studio deprecates ::std::copy, so we use our own copy in that case.
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#ifdef _MSC_VER
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internal::CopyElements(first, last, ::testing::get<k>(args));
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#else
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::std::copy(first, last, ::testing::get<k>(args));
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#endif
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}
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// Action DeleteArg<k>() deletes the k-th (0-based) argument of the mock
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// function.
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ACTION_TEMPLATE(DeleteArg,
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HAS_1_TEMPLATE_PARAMS(int, k),
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AND_0_VALUE_PARAMS()) {
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delete ::testing::get<k>(args);
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}
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// This action returns the value pointed to by 'pointer'.
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ACTION_P(ReturnPointee, pointer) { return *pointer; }
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// Action Throw(exception) can be used in a mock function of any type
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// to throw the given exception. Any copyable value can be thrown.
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#if GTEST_HAS_EXCEPTIONS
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// Suppresses the 'unreachable code' warning that VC generates in opt modes.
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# ifdef _MSC_VER
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# pragma warning(push) // Saves the current warning state.
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# pragma warning(disable:4702) // Temporarily disables warning 4702.
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# endif
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ACTION_P(Throw, exception) { throw exception; }
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# ifdef _MSC_VER
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# pragma warning(pop) // Restores the warning state.
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# endif
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#endif // GTEST_HAS_EXCEPTIONS
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#ifdef _MSC_VER
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# pragma warning(pop)
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#endif
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} // namespace testing
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#endif // GMOCK_INCLUDE_GMOCK_GMOCK_MORE_ACTIONS_H_
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