def test_to_timestamp(self):
intv = Interval('1982', freq='A')
start_ts = intv.to_timestamp(which_end='S')
aliases = ['s', 'StarT', 'BEGIn']
for a in aliases:
self.assertEquals(start_ts, intv.to_timestamp(which_end=a))
end_ts = intv.to_timestamp(which_end='E')
aliases = ['e', 'end', 'FINIsH']
for a in aliases:
self.assertEquals(end_ts, intv.to_timestamp(which_end=a))
from_lst = ['A', 'Q', 'M', 'W', 'B',
'D', 'H', 'Min', 'S']
for i, fcode in enumerate(from_lst):
intv = Interval('1982', freq=fcode)
result = intv.to_timestamp().to_interval(fcode)
self.assertEquals(result, intv)
self.assertEquals(intv.start_time(), intv.to_timestamp('S'))
self.assertEquals(intv.end_time(), intv.to_timestamp('E'))
