C++ Google Mock - EXPECT_CALL() - 期望在不直接调用时不起作用

Question

我对 Google Mock 还是很陌生，所以边学边学。我刚刚添加了一些单元测试，但遇到了一个问题，我无法让 ON_CALL() 正确地 stub 从方法内部调用的方法。

下面的代码概述了我所拥有的；

class simpleClass
{
    public:
        bool simpleFn1()  { return simpleFn2(); }
        virtual bool simpleFn2()  { return FALSE; }
}

在我的单元测试中我有:

class simpleClassMocked : public simpleClass
{
    private:
        MOCK_METHOD0(simpleFn2, bool());
}

class simpleClassTests : public ::testing::Test
{
}

TEST_F(simpleClassTests, testSimpleFn2)
{
    shared_ptr<simpleClassMocked> pSimpleClass = shared_ptr< simpleClassMocked >(new simpleClassMocked());

    ON_CALL(*pSimpleClass, simpleF2()).WillByDefault(Return(TRUE));

    // This works as expected - simpleFn2() gets stubbed
    pSimpleClass->simpleFn2();

    // This doesn't work as expected - when simpleFn1 calls simpleFn2 it's not the stubbed expectation???
    pSimpleClass->simpleFn1();
}

我想我一定遗漏了一些明显的东西，有人可以帮忙吗？谢谢!

Answer 1

您必须将该方法标记为virtual 并在simpleClassMocked 类中添加相应的MOCK 函数

class simpleClass
{
    public:
        virtual bool simpleFn1()  { return simpleFn2(); }
        virtual bool simpleFn2()  { return FALSE; }
}

此外，您需要将 Mock 方法放在 public 区域

class simpleClassMocked : public simpleClass
{
    public:
        MOCK_METHOD0(simpleFn2, bool());
        MOCK_METHOD0(simpleFn1, bool());
}

现在可以了