[issue30523] unittest: add --list-tests option to only display the list of test names, don't run tests

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

The main problem is doctests. Numerous "doctest.DocTestCase.runTest" look useless and confusing.

Running tests instead of listing them is bad.

It is not clear why in one cases --list-tests outputs full qualified test names, while in other cases it outputs only class and method names.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30523>
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