def test_to_interface_check(self):
with self.assertRaises(ValueError): # to_interface is an interface
pure_interface.register_adapter(TalkerToSpeaker3, Talker, Talker)
with self.assertRaises(ValueError): # to_interface is not concrete
pure_interface.register_adapter(TalkerToSpeaker3, Talker,
TalkerToSpeaker)
def test_from_type_check(self):
with self.assertRaises(ValueError): # must be callable
pure_interface.register_adapter(TalkerToSpeaker3, 6, ISpeaker)
with self.assertRaises(ValueError): # already adapted
pure_interface.register_adapter(TalkerToSpeaker, Talker, ISpeaker)
def test_adapter_check(self):
with self.assertRaises(ValueError):
pure_interface.register_adapter(5, Talker, ISpeaker)
def test_adapter_call_check(self):
pure_interface.register_adapter(bad_adapter, Talker4, ISpeaker)
talker = Talker4()
with self.assertRaises(ValueError):
ISpeaker.adapt(talker, interface_only=False)