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Viewing changes to bzrlib/tests/__init__.py

  • Committer: Andrew Bennetts
  • Date: 2007-10-26 07:25:44 UTC
  • mto: This revision was merged to the branch mainline in revision 2946.
  • Revision ID: andrew.bennetts@canonical.com-20071026072544-1c9p65ogzvtb61ay
Override warnings.filters in callCatchWarnings, to insulate it from -Werror.

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bzrlib/tests/__init__.py
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        :returns: ([warning_object, ...], fn_result)
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        """
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        # XXX: This is not perfect, because it doesn't override the warnings
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        # filters, and they'll often want to show a warning only once per
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        # source origin.  That might be a problem for repeated tests of
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        # similar situations.  -- mbp 20071024
 
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        # XXX: This is not perfect, because it completely overrides the
 
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        # warnings filters, and some code may depend on suppressing particular
 
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        # warnings.  It's the easiest way to insulate ourselves from -Werror,
 
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        # though.  -- Andrew, 20071062
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        wlist = []
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        def _catcher(message, category, filename, lineno, file=None):
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            # despite the name, 'message' is normally(?) a Warning subclass
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            # instance
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            wlist.append(message)
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        saved_showwarning = warnings.showwarning
 
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        saved_filters = warnings.filters
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        try:
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            warnings.showwarning = _catcher
 
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            warnings.filters = []
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            result = fn(*args, **kw)
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        finally:
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            warnings.showwarning = saved_showwarning
 
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            warnings.filters = saved_filters
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        return wlist, result
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    def callDeprecated(self, expected, callable, *args, **kwargs):