def test_previous_next_reference_date(self): from_date = Date(3, Sep, 2011) to_date = Date(15, Dec, 2011) tenor = Period(1, Months) calendar = UnitedKingdom() convention = Following termination_convention = Following rule = Forward fwd_schedule = Schedule(from_date, to_date, tenor, calendar, convention, termination_convention, rule) expected_date = Date(5, Sep, 2011) print expected_date, fwd_schedule.next_date(from_date) self.assert_(expected_date == fwd_schedule.next_date(from_date)) rule = Backward bwd_schedule = Schedule(from_date, to_date, tenor, calendar, convention, termination_convention, rule) expected_date = Date(15, Nov, 2011) self.assert_(expected_date == bwd_schedule.previous_date(to_date))