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))
