def test_interval_constructor(self):
i1 = Interval('1/1/2005', freq='M')
i2 = Interval('Jan 2005')
self.assertEquals(i1, i2)
i1 = Interval('2005', freq='A')
i2 = Interval('2005')
i3 = Interval('2005', freq='a')
self.assertEquals(i1, i2)
self.assertEquals(i1, i3)
i4 = Interval('2005', freq='M')
i5 = Interval('2005', freq='m')
self.assert_(i1 != i4)
self.assertEquals(i4, i5)
i1 = Interval.now('Q')
i2 = Interval(datetime.now(), freq='Q')
i3 = Interval.now('q')
self.assertEquals(i1, i2)
self.assertEquals(i1, i3)
# Biz day construction, roll forward if non-weekday
i1 = Interval('3/10/12', freq='B')
i2 = Interval('3/12/12', freq='D')
self.assertEquals(i1, i2.resample('B'))
i3 = Interval('3/10/12', freq='b')
self.assertEquals(i1, i3)
i1 = Interval(year=2005, quarter=1, freq='Q')
i2 = Interval('1/1/2005', freq='Q')
self.assertEquals(i1, i2)
i1 = Interval(year=2005, quarter=3, freq='Q')
i2 = Interval('9/1/2005', freq='Q')
self.assertEquals(i1, i2)
i1 = Interval(year=2005, month=3, day=1, freq='D')
i2 = Interval('3/1/2005', freq='D')
self.assertEquals(i1, i2)
i3 = Interval(year=2005, month=3, day=1, freq='d')
self.assertEquals(i1, i3)
i1 = Interval(year=2012, month=3, day=10, freq='B')
i2 = Interval('3/12/12', freq='B')
self.assertEquals(i1, i2)
i1 = Interval('2005Q1')
i2 = Interval(year=2005, quarter=1, freq='Q')
i3 = Interval('2005q1')
self.assertEquals(i1, i2)
self.assertEquals(i1, i3)
i1 = Interval('05Q1')
self.assertEquals(i1, i2)
lower = Interval('05q1')
self.assertEquals(i1, lower)
i1 = Interval('1Q2005')
self.assertEquals(i1, i2)
lower = Interval('1q2005')
self.assertEquals(i1, lower)
i1 = Interval('1Q05')
self.assertEquals(i1, i2)
lower = Interval('1q05')
self.assertEquals(i1, lower)
i1 = Interval('4Q1984')
self.assertEquals(i1.year, 1984)
lower = Interval('4q1984')
self.assertEquals(i1, lower)
i1 = Interval('1982', freq='min')
i2 = Interval('1982', freq='MIN')
self.assertEquals(i1, i2)
i2 = Interval('1982', freq=('Min', 1))
self.assertEquals(i1, i2)
