def METHOD_NAME(self):
    values = self.getTrackalertPrometheusValues()
    self.checkTrackalertValues(values)
    custom_count = float(values['trackalert_commands_total{cmd="custom"}'])
    # add one message before checking stats again
    self.trackalertCustomFunc("foobar")
    values = self.getTrackalertPrometheusValues()
    self.assertGreater(float(values['trackalert_commands_total{cmd="custom"}']), custom_count)
    self.assertGreater(float(values['trackalert_worker_response_duration_seconds_bucket{le="+Inf"}']), 0)