def test_open_already(self):
url = 'test-url'
# test
sender = Sender(url)
sender.is_open = Mock(return_value=True)
sender.open()
# validation
self.assertFalse(sender.connection.open.called)
def test_open(self, connection):
url = 'test-url'
# test
sender = Sender(url)
sender.is_open = Mock(return_value=False)
sender.open()
# validation
connection.return_value.open.assert_called_once_with()
