def test_datetimeindex_union_join_empty(self):
dti = DatetimeIndex(start="1/1/2001", end="2/1/2001", freq="D")
empty = Index([])
result = dti.union(empty)
self.assert_(isinstance(result, DatetimeIndex))
self.assert_(result is result)
result = dti.join(empty)
self.assert_(isinstance(result, DatetimeIndex))
def test_datetimeindex_union_join_empty(self):
dti = DatetimeIndex(start='1/1/2001', end='2/1/2001', freq='D')
empty = Index([])
result = dti.union(empty)
tm.assertIsInstance(result, DatetimeIndex)
self.assertIs(result, result)
result = dti.join(empty)
tm.assertIsInstance(result, DatetimeIndex)
def test_datetimeindex_union_join_empty(self):
dti = DatetimeIndex(start='1/1/2001', end='2/1/2001', freq='D')
empty = Index([])
result = dti.union(empty)
assert isinstance(result, DatetimeIndex)
assert result is result
result = dti.join(empty)
assert isinstance(result, DatetimeIndex)
def test_datetimeindex_union_join_empty(self):
dti = DatetimeIndex(start='1/1/2001', end='2/1/2001', freq='D')
empty = Index([])
result = dti.union(empty)
assert isinstance(result, DatetimeIndex)
self.assertIs(result, result)
result = dti.join(empty)
assert isinstance(result, DatetimeIndex)