'For two instances of L{DelayedCall} C{a} and C{b}, C{a > b} is true
if and only if C{a} is scheduled to run after C{b}.'

def test_gt(self):

    (zero, one) = (self.zero, self.one)
    self.assertTrue((one > zero))
    self.assertFalse((zero > one))
    self.assertFalse((zero > zero))
    self.assertFalse((one > one))
