[issue11049] add tests for test.support

[Ezio Melotti]

Ezio Melotti <ezio.melotti at gmail.com> added the comment:

Several buildbot are failing after the commit:

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FAIL: test_get_original_stdout (test.test_support.TestSupport)
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Traceback (most recent call last):
  File "/var/lib/buildslave/3.x.murray-gentoo-wide/build/Lib/test/test_support.py", line 34, in test_get_original_stdout
    self.assertEqual(support.get_original_stdout(), sys.stdout)
AssertionError: <_io.TextIOWrapper name=1 mode='w' encoding='ANSI_X3.4-1968'> != <_io.StringIO object at 0xb715b46c>

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