def test_write_message_no_subscribers(mock_connection):
ac = ActiveConnections()
c = MockConnection()
ac.connections = [c]
ac.write_message({'user': '******'})
assert mock_connection.call_count == 0, 'Called when noone subscribed'
def test_write_message(mock_connection):
ac = ActiveConnections()
c = MockConnection()
c.subscriptions = ['someuser']
ac.connections = [c]
ac.write_message({'user': '******'})
mock_connection.assert_called_once_with(json.dumps({'user': '******'}))
