We test the following cases:
1 - Are return values set with fake.return_val saved in history?
2 - Are return values of a RETURN_SEQ saved in history?
3 - Are return values return by a CUSTOM_FAKE_SEQ saved in history?
Using a function that sets a value on a variable via a char pointer, we
test the following:
1 - Does the custom fakes are called in the expected order?
2 - When the sequence length is exhausted, do we only call the last
custom fake in the sequence from then on?
