test: Draft test example.

[rainwoodman]

For coverage on all of the attribute setters and the translation from info dict to the attributes.

#25

[rainwoodman]

@dahlb please a look if you like this approach, and we can make adjustments before I farm this out to testing real devices.

[dahlb]

it looks promising and does a nice job of mocking the api in a simple way.

I'm new to the unittest package, but I found this https://docs.python.org/3/library/unittest.html which suggests replacing
assert device.pm1 is None
with
self.assertIs(device.pm1, None)

[rainwoodman]

This is where pytest kicks in -- when we run unittests with pytest as the test driver, then pytest replaces stock assert function to include the context of the current running test as well the values of the expression nodes (just like self.assert* do).

Another advantage of pytest as the test driver is that we are not writing the if __name__ == '__main__': section which wasrequired by the stock unittest due to lack of a test driver. In addition, I recall the test fixtures (and parameterized tests) of pytest is a bit easier to use than unittest, though I don't think we will be using those any time soon.

[dahlb]

I was able to use the stock version with

python3 -m unittest tests/*.py

without adding any main stuff, but pytest didn't work in my virtual env, I'll try to look at test harness choices tonight along with a github hook for running them

[rainwoodman]

I am using the home assistant core env if that helps. If we will use the unittest driver (e.g pytest doesn’t work for you) I think we shall stick with the unittest syntax for assertions.

…

On Tue, Dec 10, 2024 at 11:24 AM Bren Dahl ***@***.***> wrote: I was able to use the stock version with python3 -m unittest tests/*.py without adding any *main* stuff, but pytest didn't work in my virtual env, I'll try to look at test harness choices tonight along with a github hook for running them — Reply to this email directly, view it on GitHub <#27 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AABBWTDPFQRLXZB6VDOXYFD2E45VPAVCNFSM6AAAAABTEB4TAWVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDKMZSGY3TGNRYGU> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[dahlb]

I figured out my env issue and got pytest working, just need to find a github hook to use

[rainwoodman]

I think we just add a new github workflow (forking lint.yaml).