[issue12314] regrtest checks (os.environ, sys.path, etc.) are hard to use

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

> maybe there's some way to reuse unittest's assertEqual machinery?
Hum, I think the diff functionality is cleanly separated in a (private) method, so we could get diff for free.

> I also wonder if the whole environment-changed thing should be moved
> into unittest so it could wrap around individual test methods.
Yeah, I was thinking about a WatchfulTestRunner that would perform the same checks.  It annoys me to have two diverging sets of features to run tests: either checks with regrtest, or failfast, discovery and granularity with unittest.

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nosy: +ezio.melotti, michael.foord

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<http://bugs.python.org/issue12314>
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