def test_register_handler_twice(self):
"""
Multiple registrations have no effect.
"""
dispatcher = self.dispatcher
element = uml2.Class()
# Add some properties:
element.ownedOperation = uml2.Operation()
p = element.ownedOperation[0].formalParameter = uml2.Parameter()
dispatcher.register_handler(self._handler, element,
'ownedOperation.parameter.name')
n_handlers = len(dispatcher._handlers)
self.assertEquals(0, len(self.events))
dispatcher.register_handler(self._handler, element,
'ownedOperation.parameter.name')
self.assertEquals(n_handlers, len(dispatcher._handlers))
dispatcher.register_handler(self._handler, element,
'ownedOperation.parameter.name')
self.assertEquals(n_handlers, len(dispatcher._handlers))
dispatcher.register_handler(self._handler, element,
'ownedOperation.parameter.name')
self.assertEquals(n_handlers, len(dispatcher._handlers))
p.name = 'func'
self.assertEquals(1, len(self.events))
def test_register_handler(self):
dispatcher = self.dispatcher
element = uml2.Class()
dispatcher.register_handler(self._handler, element, 'ownedOperation.parameter.name')
assert len(dispatcher._handlers) == 1
assert list(dispatcher._handlers.keys())[0] == (element, uml2.Class.ownedOperation)
# Add some properties:
# 1:
element.ownedOperation = uml2.Operation()
# 2:
p = element.ownedOperation[0].formalParameter = uml2.Parameter()
# 3:
p.name = 'func'
dispatcher.register_handler(self._handler, element, 'ownedOperation.parameter.name')
self.assertEquals(3, len(self.events))
self.assertEquals(3, len(dispatcher._handlers))
def test_unregister_handler(self):
# First some setup:
dispatcher = self.dispatcher
element = uml2.Class()
o = element.ownedOperation = uml2.Operation()
p = element.ownedOperation[0].formalParameter = uml2.Parameter()
p.name = 'func'
dispatcher.register_handler(self._handler, element, 'ownedOperation.parameter.name')
assert len(dispatcher._handlers) == 3
assert dispatcher._handlers[element, uml2.Class.ownedOperation]
assert dispatcher._handlers[o, uml2.Operation.parameter]
assert dispatcher._handlers[p, uml2.Parameter.name]
dispatcher.unregister_handler(self._handler)
assert len(dispatcher._handlers) == 0, dispatcher._handlers
assert len(dispatcher._reverse) == 0, dispatcher._reverse
#assert dispatcher._handlers.keys()[0] == (element, uml2.Class.ownedOperation)
# Should not fail here too:
dispatcher.unregister_handler(self._handler)
def test_notification(self):
"""
Test notifications with Class object.
"""
dispatcher = self.dispatcher
element = uml2.Class()
o = element.ownedOperation = uml2.Operation()
p = element.ownedOperation[0].formalParameter = uml2.Parameter()
p.name = 'func'
dispatcher.register_handler(self._handler, element, 'ownedOperation.parameter.name')
assert len(dispatcher._handlers) == 3
assert not self.events
element.ownedOperation = uml2.Operation()
assert len(self.events) == 1, self.events
assert len(dispatcher._handlers) == 4
p.name = 'othername'
assert len(self.events) == 2, self.events
del element.ownedOperation[o]
assert len(dispatcher._handlers) == 2