realmock | express randomjson 模拟后端服务，前端服务器 | Application Framework library

If I'm understanding your situation correctly, you have a class you're testing which takes the IIterface as a dependency and you want to ensure the MethodToBeTested(int) method is being called by the class you're testing.

This can be done using the .ForPartsOf() method of generating the mock. This generates a "partial mock", which will call the underlying class implementation unless you provide an override. It comes with a big requirement, though: The methods you want to override (or ensure were called) must be virtual (or abstract if defined in a base class).

Once you have the mock, then you can use .Received() to assert that methods on the mock were called (or not called, if you use .DidNotReceive()).

You don't actually need to override the behavior of MethodToBeTested(int) if you want the base implementation to be used.

Here's a concrete example, based on your sample code:

For the dependency, you have a RealClass that implements the interface IIterface and you want to ensure MethodToBeTested(int) was called. So those might look like this: