def setUp(self):
"""
Configure L{twisted.python.components.registerAdapter} to mutate an
alternate registry to improve test isolation.
"""
# Create a brand new, empty registry and put it onto the components
# module where registerAdapter will use it. Also ensure that it goes
# away at the end of the test.
scratchRegistry = AdapterRegistry()
self.patch(components, 'globalRegistry', scratchRegistry)
# Hook the new registry up to the adapter lookup system and ensure that
# association is also discarded after the test.
hook = _addHook(scratchRegistry)
self.addCleanup(_removeHook, hook)
def setUp(self):
"""
Configure L{twisted.python.components.registerAdapter} to mutate an
alternate registry to improve test isolation.
"""
# Create a brand new, empty registry and put it onto the components
# module where registerAdapter will use it. Also ensure that it goes
# away at the end of the test.
scratchRegistry = AdapterRegistry()
self.patch(components, 'globalRegistry', scratchRegistry)
# Hook the new registry up to the adapter lookup system and ensure that
# association is also discarded after the test.
hook = _addHook(scratchRegistry)
self.addCleanup(_removeHook, hook)
def _registryActive(registry):
"""
A context manager that activates and deactivates a zope adapter registry
for the duration of the call.
For example, if you wanted to have a function that could adapt C{IFoo} to
C{IBar}, but doesn't expose that adapter outside of itself::
def convertToBar(maybeFoo):
with _registryActive(_registryAdapting((IFoo, IBar, fooToBar))):
return IBar(maybeFoo)
@note: This isn't thread safe, so other threads will be affected as well.
@param registry: The registry to activate.
@type registry: L{AdapterRegistry}
@rtype:
"""
hook = _addHook(registry)
yield
_removeHook(hook)
def _registryActive(registry):
"""
A context manager that activates and deactivates a zope adapter registry
for the duration of the call.
For example, if you wanted to have a function that could adapt C{IFoo} to
C{IBar}, but doesn't expose that adapter outside of itself::
def convertToBar(maybeFoo):
with _registryActive(_registryAdapting((IFoo, IBar, fooToBar))):
return IBar(maybeFoo)
@note: This isn't thread safe, so other threads will be affected as well.
@param registry: The registry to activate.
@type registry: L{AdapterRegistry}
@rtype:
"""
hook = _addHook(registry)
yield
_removeHook(hook)
