[issue11049] add tests for test.support

[Roundup Robot]

Roundup Robot <devnull at psf.upfronthosting.co.za> added the comment:

New changeset 0018a28583f4 by Eli Bendersky in branch 'default':
Issue #11049: skip a test that fails on some buildbots
http://hg.python.org/cpython/rev/0018a28583f4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11049>
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