[issue11963] Use real assert* for test_trigger_memory_error (test_parser)

[Ezio Melotti]

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

I think the patch is OK.
FWIW I tried to replace sys.stderr with a StringIO to see if it was possible to keep using assertRaises and then read the value from the StringIO but that didn't work.

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nosy: +ezio.melotti

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<http://bugs.python.org/issue11963>
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