Discovery API must support additional switches (such as -k=test_ for pytest).

[d3r3kk]

Our new test discovery API must support extra switches that our users will want to configure their test platform with.

For example, the -k=[pattern] switch that tells Pytest what to look for as test identifier.

[DonJayamanne]

Doesn't this already work? I was expecting the ts code to pass the arguments as is to the python code, if that's not the case then this needs to be done, else its a regression.

There are a number of other arguments that users will add into "python.unitTest.pyTestArgs" that will need to be used when discovering tests.

Just passing all of the arguments that the TS code had should suffice. I was under the impression that is what was being done.

#3911 (comment)
#4033 (comment)

Not doing this will potentially break existing pytests.
This works with the existing code.

/cc @ericsnowcurrently

[DonJayamanne]

Closing this as it has been account for, and the existing tests will ensure this does not get missed in #4795