def test_messages_service(self, skip=False):
if not skip:
self._init_memphis()
service = IStatusMessage(self.request)
self.assertTrue(IStatusMessage.providedBy(service))
self.assertEqual(service.messages(), ())
# add simple msg
service.add('Test')
msgs = service.messages()
self.assertTrue(len(msgs) == 1)
self.assertTrue(u'Test' in msgs[0])
# only one message
service.add('Test')
msgs = service.messages()
self.assertTrue(len(msgs) == 1)
# clear
msgs = service.clear()
self.assertTrue(len(msgs) == 1)
self.assertTrue(u'Test' in msgs[0])
self.assertEqual(service.messages(), ())
self.assertEqual(service.clear(), ())
