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  • Committer: Robert Collins
  • Date: 2010-05-06 07:48:22 UTC
  • mto: This revision was merged to the branch mainline in revision 5223.
  • Revision ID: robertc@robertcollins.net-20100506074822-0bsgf2j4h8jx0xkk
Added ``bzrlib.tests.matchers`` as a place to put matchers, along with
our first in-tree matcher. See the module docstring for details.
(Robert Collins)

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bzrlib/tests/matchers.py
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"""
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__all__ = [
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    'ReturnsUnlockable',
 
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    'ReturnsCallableLeavingObjectUnlocked',
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    ]
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from testtools.matchers import Mismatch, Matcher
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class ReturnsUnlockable(Matcher):
 
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class ReturnsCallableLeavingObjectUnlocked(Matcher):
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    """A matcher that checks for the pattern we want lock* methods to have:
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    They should return an object with an unlock() method.
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    Calling that method should unlock the original object.
 
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    They should return a callable.
 
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    Calling that callable should unlock the original object.
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    :ivar lockable_thing: The object which can be locked that will be
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        inspected.
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        self.lockable_thing = lockable_thing
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    def __str__(self):
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        return ('ReturnsUnlockable(lockable_thing=%s)' % 
 
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        return ('ReturnsCallableLeavingObjectUnlocked(lockable_thing=%s)' % 
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            self.lockable_thing)
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    def match(self, lock_method):
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        lock_method().unlock()
 
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        lock_method()()
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        if self.lockable_thing.is_locked():
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            return _IsLocked(self.lockable_thing)
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        return None