def test_initiallySchedulesOneDataCall(self):
        """
        When a H2Connection is established it schedules one call to be run as
        soon as the reactor has time.
        """
        reactor = task.Clock()
        a = H2Connection(reactor)

        calls = reactor.getDelayedCalls()
        self.assertEqual(len(calls), 1)
        call = calls[0]

        # Validate that the call is scheduled for right now, but hasn't run,
        # and that it's correct.
        self.assertTrue(call.active())
        self.assertEqual(call.time, 0)
        self.assertEqual(call.func, a._sendPrioritisedData)
        self.assertEqual(call.args, ())
        self.assertEqual(call.kw, {})

        When a H2Connection is established it schedules one call to be run as
        soon as the reactor has time.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/test/test_http2.py