Google Mock:对具有不同参数的同一功能有多种期望 [英] Google Mock: multiple expectations on same function with different parameters

问题描述

考虑以下情况:预期某个模拟函数将被多次调用，每次在某个参数中具有不同的值.我想验证该函数确实在某个值列表(例如1,2,5)中的每个值确实被调用过一次.

Consider the case where a certain mocked function is expected to be called several times, each time with a different value in a certain parameter. I would like to validate that the function was indeed called once and only once per value in a certain list of values (e.g. 1,2,5).

另一方面，我想避免定义一个顺序，因为该顺序决定了一定的顺序，这是我想保留的实现细节.

On the other hand, I would like to refrain from defining a sequence as that would dictate a certain order, which is an implementation detail I would like to keep free.

在这种情况下是否有匹配器或其他解决方案?

Is there some kind of matcher, or other solution for this case?

我不确定这是否会以任何方式影响解决方案，但我确实打算将WillOnce(Return(x))与上面列表中的每个值使用不同的x.

I'm not sure if this influences the solution in any way but I do intend to use WillOnce(Return(x)) with a different x per value in the list above.

推荐答案

默认情况下，可以按任何顺序满足gMock期望(正是出于您提到的原因-因此您不必过度指定测试).

By default gMock expectations can be satisfied in any order (precisely for the reason you mention -- so you don't over specify your tests).

在您的情况下，您只需要以下内容:

In your case, you just want something like:

EXPECT_CALL(foo, DoThis(1));
EXPECT_CALL(foo, DoThis(2));
EXPECT_CALL(foo, DoThis(5));

类似的东西:

foo.DoThis(5);
foo.DoThis(1);
foo.DoThis(2);

将满足那些期望.

(此外:如果您没有要限制订单，则应使用InSequence:

(Aside: If you did want to constrain the order, you should use InSequence: https://github.com/google/googletest/blob/master/googlemock/docs/cook_book.md#expecting-ordered-calls-orderedcalls)

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