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348 lines
12 KiB
C++
348 lines
12 KiB
C++
$$ -*- mode: c++; -*-
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$$ This is a Pump source file. Please use Pump to convert
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$$ it to gmock-generated-function-mockers.h.
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$$
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$var n = 10 $$ The maximum arity we support.
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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 function mockers of various arities.
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#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
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#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
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#include "gmock/gmock-spec-builders.h"
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#include "gmock/internal/gmock-internal-utils.h"
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#if GTEST_HAS_STD_FUNCTION_
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# include <functional>
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#endif
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namespace testing {
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namespace internal {
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template <typename F>
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class FunctionMockerBase;
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// Note: class FunctionMocker really belongs to the ::testing
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// namespace. However if we define it in ::testing, MSVC will
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// complain when classes in ::testing::internal declare it as a
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// friend class template. To workaround this compiler bug, we define
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// FunctionMocker in ::testing::internal and import it into ::testing.
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template <typename F>
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class FunctionMocker;
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$range i 0..n
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$for i [[
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$range j 1..i
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$var typename_As = [[$for j [[, typename A$j]]]]
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$var As = [[$for j, [[A$j]]]]
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$var as = [[$for j, [[internal::forward<A$j>(a$j)]]]]
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$var Aas = [[$for j, [[A$j a$j]]]]
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$var ms = [[$for j, [[m$j]]]]
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$var matchers = [[$for j, [[const Matcher<A$j>& m$j]]]]
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template <typename R$typename_As>
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class FunctionMocker<R($As)> : public
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internal::FunctionMockerBase<R($As)> {
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public:
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typedef R F($As);
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typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;
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MockSpec<F> With($matchers) {
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return MockSpec<F>(this, ::testing::make_tuple($ms));
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}
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R Invoke($Aas) {
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// Even though gcc and MSVC don't enforce it, 'this->' is required
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// by the C++ standard [14.6.4] here, as the base class type is
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// dependent on the template argument (and thus shouldn't be
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// looked into when resolving InvokeWith).
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return this->InvokeWith(ArgumentTuple($as));
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}
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};
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]]
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// Removes the given pointer; this is a helper for the expectation setter method
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// for parameterless matchers.
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//
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// We want to make sure that the user cannot set a parameterless expectation on
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// overloaded methods, including methods which are overloaded on const. Example:
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//
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// class MockClass {
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// MOCK_METHOD0(GetName, string&());
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// MOCK_CONST_METHOD0(GetName, const string&());
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// };
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//
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// TEST() {
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// // This should be an error, as it's not clear which overload is expected.
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// EXPECT_CALL(mock, GetName).WillOnce(ReturnRef(value));
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// }
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//
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// Here are the generated expectation-setter methods:
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//
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// class MockClass {
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// // Overload 1
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// MockSpec<string&()> gmock_GetName() { ... }
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// // Overload 2. Declared const so that the compiler will generate an
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// // error when trying to resolve between this and overload 4 in
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// // 'gmock_GetName(WithoutMatchers(), nullptr)'.
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// MockSpec<string&()> gmock_GetName(
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// const WithoutMatchers&, const Function<string&()>*) const {
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// // Removes const from this, calls overload 1
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// return AdjustConstness_(this)->gmock_GetName();
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// }
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//
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// // Overload 3
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// const string& gmock_GetName() const { ... }
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// // Overload 4
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// MockSpec<const string&()> gmock_GetName(
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// const WithoutMatchers&, const Function<const string&()>*) const {
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// // Does not remove const, calls overload 3
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// return AdjustConstness_const(this)->gmock_GetName();
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// }
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// }
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//
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template <typename MockType>
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const MockType* AdjustConstness_const(const MockType* mock) {
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return mock;
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}
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// Removes const from and returns the given pointer; this is a helper for the
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// expectation setter method for parameterless matchers.
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template <typename MockType>
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MockType* AdjustConstness_(const MockType* mock) {
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return const_cast<MockType*>(mock);
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}
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} // namespace internal
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// The style guide prohibits "using" statements in a namespace scope
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// inside a header file. However, the FunctionMocker class template
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// is meant to be defined in the ::testing namespace. The following
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// line is just a trick for working around a bug in MSVC 8.0, which
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// cannot handle it if we define FunctionMocker in ::testing.
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using internal::FunctionMocker;
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// GMOCK_RESULT_(tn, F) expands to the result type of function type F.
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// We define this as a variadic macro in case F contains unprotected
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// commas (the same reason that we use variadic macros in other places
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// in this file).
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// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
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#define GMOCK_RESULT_(tn, ...) \
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tn ::testing::internal::Function<__VA_ARGS__>::Result
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// The type of argument N of the given function type.
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// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
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#define GMOCK_ARG_(tn, N, ...) \
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tn ::testing::internal::Function<__VA_ARGS__>::Argument##N
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// The matcher type for argument N of the given function type.
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// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
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#define GMOCK_MATCHER_(tn, N, ...) \
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const ::testing::Matcher<GMOCK_ARG_(tn, N, __VA_ARGS__)>&
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// The variable for mocking the given method.
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// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
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#define GMOCK_MOCKER_(arity, constness, Method) \
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GTEST_CONCAT_TOKEN_(gmock##constness##arity##_##Method##_, __LINE__)
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$for i [[
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$range j 1..i
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$var arg_as = [[$for j, [[GMOCK_ARG_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
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$var as = [[$for j, \
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[[::testing::internal::forward<GMOCK_ARG_(tn, $j, __VA_ARGS__)>(gmock_a$j)]]]]
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$var matcher_arg_as = [[$for j, \
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[[GMOCK_MATCHER_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
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$var matcher_as = [[$for j, [[gmock_a$j]]]]
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$var anything_matchers = [[$for j, \
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[[::testing::A<GMOCK_ARG_(tn, $j, __VA_ARGS__)>()]]]]
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// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
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#define GMOCK_METHOD$i[[]]_(tn, constness, ct, Method, ...) \
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GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
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$arg_as) constness { \
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GTEST_COMPILE_ASSERT_((::testing::tuple_size< \
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tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value == $i), \
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this_method_does_not_take_$i[[]]_argument[[$if i != 1 [[s]]]]); \
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GMOCK_MOCKER_($i, constness, Method).SetOwnerAndName(this, #Method); \
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return GMOCK_MOCKER_($i, constness, Method).Invoke($as); \
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} \
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::testing::MockSpec<__VA_ARGS__> \
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gmock_##Method($matcher_arg_as) constness { \
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GMOCK_MOCKER_($i, constness, Method).RegisterOwner(this); \
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return GMOCK_MOCKER_($i, constness, Method).With($matcher_as); \
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} \
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::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
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const ::testing::internal::WithoutMatchers&, \
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constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
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return ::testing::internal::AdjustConstness_##constness(this)-> \
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gmock_##Method($anything_matchers); \
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} \
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mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_($i, constness, Method)
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]]
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$for i [[
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#define MOCK_METHOD$i(m, ...) GMOCK_METHOD$i[[]]_(, , , m, __VA_ARGS__)
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]]
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$for i [[
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#define MOCK_CONST_METHOD$i(m, ...) GMOCK_METHOD$i[[]]_(, const, , m, __VA_ARGS__)
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]]
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$for i [[
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#define MOCK_METHOD$i[[]]_T(m, ...) GMOCK_METHOD$i[[]]_(typename, , , m, __VA_ARGS__)
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]]
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$for i [[
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#define MOCK_CONST_METHOD$i[[]]_T(m, ...) \
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GMOCK_METHOD$i[[]]_(typename, const, , m, __VA_ARGS__)
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]]
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$for i [[
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#define MOCK_METHOD$i[[]]_WITH_CALLTYPE(ct, m, ...) \
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GMOCK_METHOD$i[[]]_(, , ct, m, __VA_ARGS__)
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]]
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$for i [[
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#define MOCK_CONST_METHOD$i[[]]_WITH_CALLTYPE(ct, m, ...) \
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GMOCK_METHOD$i[[]]_(, const, ct, m, __VA_ARGS__)
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]]
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$for i [[
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#define MOCK_METHOD$i[[]]_T_WITH_CALLTYPE(ct, m, ...) \
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GMOCK_METHOD$i[[]]_(typename, , ct, m, __VA_ARGS__)
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]]
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$for i [[
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#define MOCK_CONST_METHOD$i[[]]_T_WITH_CALLTYPE(ct, m, ...) \
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GMOCK_METHOD$i[[]]_(typename, const, ct, m, __VA_ARGS__)
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]]
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// A MockFunction<F> class has one mock method whose type is F. It is
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// useful when you just want your test code to emit some messages and
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// have Google Mock verify the right messages are sent (and perhaps at
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// the right times). For example, if you are exercising code:
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//
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// Foo(1);
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// Foo(2);
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// Foo(3);
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//
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// and want to verify that Foo(1) and Foo(3) both invoke
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// mock.Bar("a"), but Foo(2) doesn't invoke anything, you can write:
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//
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// TEST(FooTest, InvokesBarCorrectly) {
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// MyMock mock;
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// MockFunction<void(string check_point_name)> check;
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// {
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// InSequence s;
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//
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// EXPECT_CALL(mock, Bar("a"));
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// EXPECT_CALL(check, Call("1"));
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// EXPECT_CALL(check, Call("2"));
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// EXPECT_CALL(mock, Bar("a"));
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// }
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// Foo(1);
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// check.Call("1");
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// Foo(2);
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// check.Call("2");
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// Foo(3);
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// }
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//
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// The expectation spec says that the first Bar("a") must happen
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// before check point "1", the second Bar("a") must happen after check
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// point "2", and nothing should happen between the two check
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// points. The explicit check points make it easy to tell which
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// Bar("a") is called by which call to Foo().
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//
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// MockFunction<F> can also be used to exercise code that accepts
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// std::function<F> callbacks. To do so, use AsStdFunction() method
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// to create std::function proxy forwarding to original object's Call.
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// Example:
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//
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// TEST(FooTest, RunsCallbackWithBarArgument) {
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// MockFunction<int(string)> callback;
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// EXPECT_CALL(callback, Call("bar")).WillOnce(Return(1));
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// Foo(callback.AsStdFunction());
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// }
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template <typename F>
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class MockFunction;
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$for i [[
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$range j 0..i-1
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$var ArgTypes = [[$for j, [[A$j]]]]
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$var ArgValues = [[$for j, [[::std::move(a$j)]]]]
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$var ArgDecls = [[$for j, [[A$j a$j]]]]
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template <typename R$for j [[, typename A$j]]>
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class MockFunction<R($ArgTypes)> {
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public:
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MockFunction() {}
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MOCK_METHOD$i[[]]_T(Call, R($ArgTypes));
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#if GTEST_HAS_STD_FUNCTION_
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::std::function<R($ArgTypes)> AsStdFunction() {
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return [this]($ArgDecls) -> R {
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return this->Call($ArgValues);
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};
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}
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#endif // GTEST_HAS_STD_FUNCTION_
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private:
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GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
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};
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]]
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} // namespace testing
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#endif // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
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