def test_unexpired_shift(self):
     eo = EOffer(0, None, None)
     eo.refresh(0)
     self.assertTrue(eo.expired_shift(42))
     self.assertFalse(eo.expired_shift(-42))
 def test_unexpired_shift(self):
   eo = EOffer(0, None, None)
   eo.refresh(0)
   self.assertTrue(eo.expired_shift(42))
   self.assertFalse(eo.expired_shift(-42))