'Test the monotonic() clock'

def test_monotonic(self):

    a = monotonic()
    b = monotonic()
    self.assertGreaterEqual(b, a)
    a = monotonic()
    time.sleep(0.1)
    b = monotonic()
    self.assertGreaterEqual(b, a)
    self.assertGreaterEqual((b - a), 0.09)
    self.assertLessEqual((b - a), 0.2)
