test_cmontecarlo.py: partial coverage of cmontecarlo.c

[kdexd]

Complete refactor of cmontecarlo tests was started in #530, followed by #544 (Refer checklists).

While most of the work is classified as "Done", there are a group of tests which have very complex underlying methods. They are kept under the "Difficult to Test" category block comment in test_cmontecarlo.py.

These tests are:

• montecarlo_one_packet
• montecarlo_one_packet_loop
• montecarlo_main_loop
• montecarlo_event_handler

Current implementation is in this manner:

@pytest.mark.skipif(True, reason="Yet to be written.")
def test_any_of_these_mentioned (params):
    pass

One more method is untested:

• macro_atom
macro_atom uses certain parameters of StorageModel for calculations, which are not yet set to default values in the fixture. They should be added in and this method be tested as well. To safely close this issue, a PR is expected to have the five tests mentioned here, in passing conditions.

[kdexd]

I just edited the title for it to fit in one line ! 😅

[unoebauer]

@chvogl is working on this

[unoebauer]

@chvogl has introduced some unit tests for the C-part. Thus, closing this one!