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Tests for Trial's interaction with the Python warning system.
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        A test case which is used by L{FlushWarningsTests} to verify behavior
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        After a particular warning event has been returned by
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        Any warnings emitted by a test which are not flushed are emitted to the
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        Any warnings emitted by a test which are flushed are not emitted to the
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        If a warnings filter has been installed which turns warnings into
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        If a warnings filter has been installed which turns warnings into
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        Any warnings emitted after a call to L{TestCase.flushWarnings} can be
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        The list returned by L{TestCase.flushWarnings} includes only those
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        Warnings emitted by a function the source code of which is not
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import warnings
def foo():
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        Warnings emitted by a function defined in a file which has been renamed
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        This is testing the code which specifically supports working around the
        unfortunate behavior of CPython to write a .py source file name into
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        L{_collectWarnings} returns the result of calling the callable passed to
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        Subsequent emissions of a warning from a particular source site can be
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        L{_collectWarnings}'s behavior is not altered by the presence of an
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        If the dictionary passed to L{_setWarningRegistryToNone} changes size
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        This might be caused by C{sys.modules} containing something that's not
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        tAcs eZdZfdZRS(cSs||jd<dS(Nt_key(t__dict__(RR((sC/usr/lib/python2.7/dist-packages/twisted/trial/test/test_warning.pyt__init__scsd|j<dS(N(RVR(RR|titem(R~(sC/usr/lib/python2.7/dist-packages/twisted/trial/test/test_warning.pyt__setattr__s(RRRR((R~(sC/usr/lib/python2.7/dist-packages/twisted/trial/test/test_warning.pyRs	N(RRRRtkeys(RRtkey1tkey2tkey3tkey4((R~sC/usr/lib/python2.7/dist-packages/twisted/trial/test/test_warning.pyt+test_setWarningRegistryChangeWhileIteratings				
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