How can i mock a member function of A class in a B class's function? about trompeloeil HOT 3 OPEN

You need to make the A member accessible in the test so that you can place an expectation on it. One traditional technique for this is dependency injection, i.e. you create your B with the mocked A for the test.

from trompeloeil.

Yeah, I know what you mean, but that's a real huge workload, because there's a lot of historical code (T_T). And they are running at product....
So, i want to found some solution that can integrated unit testing without requiring too many source code changes。
There are many codes like demo in historical code。Although not the best, but it work。 So i can not change every class to dependency injection。
Thanks。

from trompeloeil.

Well, the library can only work within the rules of the language. For this to work you need:

1. To ensure that in the test, the member m_pObj points to a mock object.
2. Access to the mock object from the test code, and its type known, at compile time, in the test to be a mock.

With those you can place expectations on the mock and test your code. If those are not acceptable, then I'm afraid I cannot help.

from trompeloeil.