Feature or enhancement

Proposal:

Theunittest.subTest context (i.e. the object you get usingwith'sas clause, currentlyNone) should get methods to manage cleanups:

• addCleanup
• enterContext
• doCleanups

And similar ones forIsolatedAsyncIOTestCase.

They should do the same thing as the same methods onTestCase, but with subtest scope.
Example usage:

forparamin'a','b','c':withself.subTest()assub:tempfile=make_tempfile()sub.addCleanup(os.unlink,tempfile)do_actual_test(tempfile,param)

SeeDiscuss thread for motivation/discussion.

Has this already been discussed elsewhere?

I have already discussed this feature proposal on Discourse

Links to previous discussion of this feature:

https://discuss.python.org/t/unittest-add-addcleanup-to-subtest/91827

Linked PRs

• gh-134079: AddaddCleanup,enterContext anddoCleanups tounittest.subTest and tests #134318