path: root/googlemock/include/gmock/gmock-generated-function-mockers.h.pump

$$ -*- mode: c++; -*-
$$ This is a Pump source file.  Please use Pump to convert
$$ it to gmock-generated-function-mockers.h.
$$
$var n = 10  $$ The maximum arity we support.
// Copyright 2007, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Author: wan@google.com (Zhanyong Wan)

// Google Mock - a framework for writing C++ mock classes.
//
// This file implements function mockers of various arities.

#ifndef GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_
#define GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_

#include "gmock/gmock-spec-builders.h"
#include "gmock/internal/gmock-internal-utils.h"

#if GTEST_HAS_STD_FUNCTION_
# include <functional>
#endif

namespace testing {
namespace internal {

template <typename F>
class FunctionMockerBase;

// Note: class FunctionMocker really belongs to the ::testing
// namespace.  However if we define it in ::testing, MSVC will
// complain when classes in ::testing::internal declare it as a
// friend class template.  To workaround this compiler bug, we define
// FunctionMocker in ::testing::internal and import it into ::testing.
template <typename F>
class FunctionMocker;


$range i 0..n
$for i [[
$range j 1..i
$var typename_As = [[$for j [[, typename A$j]]]]
$var As = [[$for j, [[A$j]]]]
$var as = [[$for j, [[internal::forward<A$j>(a$j)]]]]
$var Aas = [[$for j, [[A$j a$j]]]]
$var ms = [[$for j, [[m$j]]]]
$var matchers = [[$for j, [[const Matcher<A$j>& m$j]]]]
template <typename R$typename_As>
class FunctionMocker<R($As)> : public
    internal::FunctionMockerBase<R($As)> {
 public:
  typedef R F($As);
  typedef typename internal::Function<F>::ArgumentTuple ArgumentTuple;

  MockSpec<F> With($matchers) {
    return MockSpec<F>(this, ::testing::make_tuple($ms));
  }

  R Invoke($Aas) {
    // Even though gcc and MSVC don't enforce it, 'this->' is required
    // by the C++ standard [14.6.4] here, as the base class type is
    // dependent on the template argument (and thus shouldn't be
    // looked into when resolving InvokeWith).
    return this->InvokeWith(ArgumentTuple($as));
  }
};


]]
// Removes the given pointer; this is a helper for the expectation setter method
// for parameterless matchers.
//
// We want to make sure that the user cannot set a parameterless expectation on
// overloaded methods, including methods which are overloaded on const. Example:
//
//   class MockClass {
//     MOCK_METHOD0(GetName, string&());
//     MOCK_CONST_METHOD0(GetName, const string&());
//   };
//
//   TEST() {
//     // This should be an error, as it's not clear which overload is expected.
//     EXPECT_CALL(mock, GetName).WillOnce(ReturnRef(value));
//   }
//
// Here are the generated expectation-setter methods:
//
//   class MockClass {
//     // Overload 1
//     MockSpec<string&()> gmock_GetName() { ... }
//     // Overload 2. Declared const so that the compiler will generate an
//     // error when trying to resolve between this and overload 4 in
//     // 'gmock_GetName(WithoutMatchers(), nullptr)'.
//     MockSpec<string&()> gmock_GetName(
//         const WithoutMatchers&, const Function<string&()>*) const {
//       // Removes const from this, calls overload 1
//       return AdjustConstness_(this)->gmock_GetName();
//     }
//
//     // Overload 3
//     const string& gmock_GetName() const { ... }
//     // Overload 4
//     MockSpec<const string&()> gmock_GetName(
//         const WithoutMatchers&, const Function<const string&()>*) const {
//       // Does not remove const, calls overload 3
//       return AdjustConstness_const(this)->gmock_GetName();
//     }
//   }
//
template <typename MockType>
const MockType* AdjustConstness_const(const MockType* mock) {
  return mock;
}

// Removes const from and returns the given pointer; this is a helper for the 
// expectation setter method for parameterless matchers.
template <typename MockType>
MockType* AdjustConstness_(const MockType* mock) {
  return const_cast<MockType*>(mock);
}

}  // namespace internal

// The style guide prohibits "using" statements in a namespace scope
// inside a header file.  However, the FunctionMocker class template
// is meant to be defined in the ::testing namespace.  The following
// line is just a trick for working around a bug in MSVC 8.0, which
// cannot handle it if we define FunctionMocker in ::testing.
using internal::FunctionMocker;

// GMOCK_RESULT_(tn, F) expands to the result type of function type F.
// We define this as a variadic macro in case F contains unprotected
// commas (the same reason that we use variadic macros in other places
// in this file).
// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
#define GMOCK_RESULT_(tn, ...) \
    tn ::testing::internal::Function<__VA_ARGS__>::Result

// The type of argument N of the given function type.
// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
#define GMOCK_ARG_(tn, N, ...) \
    tn ::testing::internal::Function<__VA_ARGS__>::Argument##N

// The matcher type for argument N of the given function type.
// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
#define GMOCK_MATCHER_(tn, N, ...) \
    const ::testing::Matcher<GMOCK_ARG_(tn, N, __VA_ARGS__)>&

// The variable for mocking the given method.
// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
#define GMOCK_MOCKER_(arity, constness, Method) \
    GTEST_CONCAT_TOKEN_(gmock##constness##arity##_##Method##_, __LINE__)


$for i [[
$range j 1..i
$var arg_as = [[$for j, [[GMOCK_ARG_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
$var as = [[$for j, \
  [[::testing::internal::forward<GMOCK_ARG_(tn, $j, __VA_ARGS__)>(gmock_a$j)]]]]
$var matcher_arg_as = [[$for j, \
                     [[GMOCK_MATCHER_(tn, $j, __VA_ARGS__) gmock_a$j]]]]
$var matcher_as = [[$for j, [[gmock_a$j]]]]
$var anything_matchers = [[$for j, \
                     [[::testing::A<GMOCK_ARG_(tn, $j, __VA_ARGS__)>()]]]]
// INTERNAL IMPLEMENTATION - DON'T USE IN USER CODE!!!
#define GMOCK_METHOD$i[[]]_(tn, constness, ct, Method, ...) \
  GMOCK_RESULT_(tn, __VA_ARGS__) ct Method( \
      $arg_as) constness { \
    GTEST_COMPILE_ASSERT_((::testing::tuple_size<                          \
        tn ::testing::internal::Function<__VA_ARGS__>::ArgumentTuple>::value == $i), \
        this_method_does_not_take_$i[[]]_argument[[$if i != 1 [[s]]]]); \
    GMOCK_MOCKER_($i, constness, Method).SetOwnerAndName(this, #Method); \
    return GMOCK_MOCKER_($i, constness, Method).Invoke($as); \
  } \
  ::testing::MockSpec<__VA_ARGS__> \
      gmock_##Method($matcher_arg_as) constness { \
    GMOCK_MOCKER_($i, constness, Method).RegisterOwner(this); \
    return GMOCK_MOCKER_($i, constness, Method).With($matcher_as); \
  } \
  ::testing::MockSpec<__VA_ARGS__> gmock_##Method( \
      const ::testing::internal::WithoutMatchers&, \
      constness ::testing::internal::Function<__VA_ARGS__>* ) const { \
        return ::testing::internal::AdjustConstness_##constness(this)-> \
            gmock_##Method($anything_matchers); \
      } \
  mutable ::testing::FunctionMocker<__VA_ARGS__> GMOCK_MOCKER_($i, constness, Method)


]]
$for i [[
#define MOCK_METHOD$i(m, ...) GMOCK_METHOD$i[[]]_(, , , m, __VA_ARGS__)

]]


$for i [[
#define MOCK_CONST_METHOD$i(m, ...) GMOCK_METHOD$i[[]]_(, const, , m, __VA_ARGS__)

]]


$for i [[
#define MOCK_METHOD$i[[]]_T(m, ...) GMOCK_METHOD$i[[]]_(typename, , , m, __VA_ARGS__)

]]


$for i [[
#define MOCK_CONST_METHOD$i[[]]_T(m, ...) \
    GMOCK_METHOD$i[[]]_(typename, const, , m, __VA_ARGS__)

]]


$for i [[
#define MOCK_METHOD$i[[]]_WITH_CALLTYPE(ct, m, ...) \
    GMOCK_METHOD$i[[]]_(, , ct, m, __VA_ARGS__)

]]


$for i [[
#define MOCK_CONST_METHOD$i[[]]_WITH_CALLTYPE(ct, m, ...) \
    GMOCK_METHOD$i[[]]_(, const, ct, m, __VA_ARGS__)

]]


$for i [[
#define MOCK_METHOD$i[[]]_T_WITH_CALLTYPE(ct, m, ...) \
    GMOCK_METHOD$i[[]]_(typename, , ct, m, __VA_ARGS__)

]]


$for i [[
#define MOCK_CONST_METHOD$i[[]]_T_WITH_CALLTYPE(ct, m, ...) \
    GMOCK_METHOD$i[[]]_(typename, const, ct, m, __VA_ARGS__)

]]

// A MockFunction<F> class has one mock method whose type is F.  It is
// useful when you just want your test code to emit some messages and
// have Google Mock verify the right messages are sent (and perhaps at
// the right times).  For example, if you are exercising code:
//
//   Foo(1);
//   Foo(2);
//   Foo(3);
//
// and want to verify that Foo(1) and Foo(3) both invoke
// mock.Bar("a"), but Foo(2) doesn't invoke anything, you can write:
//
// TEST(FooTest, InvokesBarCorrectly) {
//   MyMock mock;
//   MockFunction<void(string check_point_name)> check;
//   {
//     InSequence s;
//
//     EXPECT_CALL(mock, Bar("a"));
//     EXPECT_CALL(check, Call("1"));
//     EXPECT_CALL(check, Call("2"));
//     EXPECT_CALL(mock, Bar("a"));
//   }
//   Foo(1);
//   check.Call("1");
//   Foo(2);
//   check.Call("2");
//   Foo(3);
// }
//
// The expectation spec says that the first Bar("a") must happen
// before check point "1", the second Bar("a") must happen after check
// point "2", and nothing should happen between the two check
// points. The explicit check points make it easy to tell which
// Bar("a") is called by which call to Foo().
//
// MockFunction<F> can also be used to exercise code that accepts
// std::function<F> callbacks. To do so, use AsStdFunction() method
// to create std::function proxy forwarding to original object's Call.
// Example:
//
// TEST(FooTest, RunsCallbackWithBarArgument) {
//   MockFunction<int(string)> callback;
//   EXPECT_CALL(callback, Call("bar")).WillOnce(Return(1));
//   Foo(callback.AsStdFunction());
// }
template <typename F>
class MockFunction;


$for i [[
$range j 0..i-1
$var ArgTypes = [[$for j, [[A$j]]]]
$var ArgValues = [[$for j, [[::std::move(a$j)]]]]
$var ArgDecls = [[$for j, [[A$j a$j]]]]
template <typename R$for j [[, typename A$j]]>
class MockFunction<R($ArgTypes)> {
 public:
  MockFunction() {}

  MOCK_METHOD$i[[]]_T(Call, R($ArgTypes));

#if GTEST_HAS_STD_FUNCTION_
  ::std::function<R($ArgTypes)> AsStdFunction() {
    return [this]($ArgDecls) -> R {
      return this->Call($ArgValues);
    };
  }
#endif  // GTEST_HAS_STD_FUNCTION_

 private:
  GTEST_DISALLOW_COPY_AND_ASSIGN_(MockFunction);
};


]]
}  // namespace testing

#endif  // GMOCK_INCLUDE_GMOCK_GMOCK_GENERATED_FUNCTION_MOCKERS_H_