pytest's parametrize (beginner - intermediate) anthony explains #027

This was very helpful, thanks

rly halpfull, thanks

Thanks for the names triple tip, that helps a lot!

Your pytest videos are very nice, short and straight to the point. Thank you !!

Thanks; I am fan of using fixture_id
def _fixture_id(kwargs: Dict[str, Any]) -> str:
"""Returns a user-friendly test case from the parametrized kwargs.

Parameters
----------
kwargs : Dict[str, Any]
Key-value pairs of test resources.

Returns
-------
str
"""

return ", ".join(f"{k} : {v}" for (k, v) in kwargs.items())

and decorate the test with
@pytest.mark.parametrize(
"kwargs",
_load_test_cases_from_json(),
ids=_fixture_id,
)

This is is easy because u only have 1 input and 1 expected output. What precisely to do when u have 3 inputs and 1 output? e.g. testing a function which adds 3 numbers

The pytest.param is awesome to learn about! I love parametrizing tests at work, but it's not always immediately obvious which test case failed in a parametrized test with like ~10 cases. :--) Do you have any blog posts/videos that you've loved that dive deep into intermediate+ pytest usage? Or do i just rtfm

pytest xdist video? any other parallelization mechanism for pytest?

Short, concise and accurate! Well done man.

Is there any way to use the variable generated at run time ( suppose - self.id) to use as a parameter inside pytest.mark.parametrize?

How can I parametrize the whole class? Goal is to run the setup class and all the test cases for each value in the parametrized list

The pytest.mark.parametrize decorator takes any iterable as the second parameter which made it easy for working through a lot of input and output for a game which were present in a file. Thanks for this!💜

thanks, this made me look up the doc and found really cool parametrizing examples! BTW a parameter type-hinted as float actually accept an int as well, that surprised me too the first time I saw it (the numeric tower, PEP 484)