[issue6292] Fix tests to work with -OO

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

Rather than silently skipping stuff or writing to stderr, the patch
should, as much as possible, use the new test-skipping API in unittest.
Perhaps DocTestSuite could centralize some of the effort by inspecting
sys.flags and skipping accordingly (but users may also set __doc__
manually).

----------
nosy: +pitrou

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue6292>
_______________________________________