使用Google Mock和boost :: bind

Question

我有一个构造函数需要Boost函数的类，我想用Google Mock来测试它。下面的代码显示了一个示例类和我试图测试一下：

MyClass.h：

#include <boost/function.hpp> 
class MyClass 
{ 
public: 
    MyClass(boost::function<void()> callback); 
    void callCallback(); 
private: 
    boost::function<void()> m_callback; 
}; 

MyClassTest.cpp：

#include <gtest/gtest.h> 
#include <gmock/gmock.h> 
#include <boost/bind.hpp> 
#include "MyClass.h" 
class CallbackMock 
{ 
public: 
    MOCK_METHOD0(callback, void()); 
}; 

TEST(MyClassShould, CallItsCallback) 
{ 
    CallbackMock callbackMock; 
    MyClass myClass(boost::bind(&CallbackMock::callback, callbackMock)); 
    EXPECT_CALL(callbackMock, callback()).Times(1); 
    myClass.callCallback(); 
} 

试图编译MyClassTest.cpp在Visual Studio 2008给出以下错误：

...gmock/gmock-generated-function-mockers.h(76) : error C2248: 'testing::internal::FunctionMockerBase::FunctionMockerBase' : cannot access private member declared in class 'testing::internal::FunctionMockerBase' 1> with 1> [ 1>
F=void (void) 1> ] 1>
.../gmock-spec-builders.h(1656) : see declaration of 'testing::internal::FunctionMockerBase::FunctionMockerBase' 1> with 1> [ 1>
F=void (void) 1> ] 1>
This diagnostic occurred in the compiler generated function 'testing::internal::FunctionMocker::FunctionMocker(const testing::internal::FunctionMocker &)' 1> with 1> [ 1>
Function=void (void) 1> ]

该错误源自含有嘘声的行T ::绑定。用void callback（）{}替换模拟方法消除了编译错误（但也消除了使用Google Mock，达到目的）。我正在尝试做什么而不修改被测试的类？

Answer 1

我觉得这条线是错误的：

MyClass myClass(boost::bind(&CallbackMock::callback, callbackMock));

最后一个参数应该是&callbackMock

Answer 2

的原因是，谷歌模拟嘲笑是不可拷贝 - 这是由设计。当您尝试通过值将其传递到boost::bind时，编译器无法生成复制构造函数。你应该把模拟地址传递到bind：

MyClass myClass(boost::bind(&CallbackMock::callback, &callbackMock));