如何在Google Mock中使用可选参数模拟方法? [英] How to mock method with optional parameter in Google Mock?

问题描述

如何在 Google Mock 中模拟带有可选参数的方法? 例如:

How to mock a method with optional parameter in Google Mock? For example:

class A
{ 
public:
    void set_enable( bool enabled = true );
};

class MockA : public A
{
    MOCK_METHOD1( set_enable, void( bool ) );    // this is not working
};

推荐答案

这是Marko回答的替代方法:如果您不想更改原始代码，只需在模拟类中实现帮助程序即可:

This is an alternative of Marko's answer: If you don't want to change your original code, just implement the helper in the mock class:

class A
{ 
public:
    virtual void set_enable( bool enabled = true );
};

class MockA : public A
{
    MOCK_METHOD1( set_enable_impl, void( bool ) );
    virtual void set_enable( bool enabled = true )
    {
        set_enable_impl( enabled );
    {
};

例如，您仍然需要在测试中调用set_enable_impl

You still have to expect calls of set_enable_impl in your tests, for example

MockA mockA;
EXPECT_CALL(mockA, set_enable_impl(true)).Times(Exactly(1));
EXPECT_CALL(mockA, set_enable_impl(false)).Times(Exactly(1));

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