def test_intersection_cases(self):
base = period_range('6/1/2000', '6/30/2000', freq='D', name='idx')
# if target has the same name, it is preserved
rng2 = period_range('5/15/2000', '6/20/2000', freq='D', name='idx')
expected2 = period_range('6/1/2000', '6/20/2000', freq='D', name='idx')
# if target name is different, it will be reset
rng3 = period_range('5/15/2000', '6/20/2000', freq='D', name='other')
expected3 = period_range('6/1/2000', '6/20/2000', freq='D', name=None)
rng4 = period_range('7/1/2000', '7/31/2000', freq='D', name='idx')
expected4 = PeriodIndex([], name='idx', freq='D')
for (rng, expected) in [(rng2, expected2), (rng3, expected3),
(rng4, expected4)]:
result = base.intersection(rng)
tm.assert_index_equal(result, expected)
self.assertEqual(result.name, expected.name)
self.assertEqual(result.freq, expected.freq)
# non-monotonic
base = PeriodIndex(
['2011-01-05', '2011-01-04', '2011-01-02', '2011-01-03'],
freq='D',
name='idx')
rng2 = PeriodIndex(
['2011-01-04', '2011-01-02', '2011-02-02', '2011-02-03'],
freq='D',
name='idx')
expected2 = PeriodIndex(['2011-01-04', '2011-01-02'],
freq='D',
name='idx')
rng3 = PeriodIndex(
['2011-01-04', '2011-01-02', '2011-02-02', '2011-02-03'],
freq='D',
name='other')
expected3 = PeriodIndex(['2011-01-04', '2011-01-02'],
freq='D',
name=None)
rng4 = period_range('7/1/2000', '7/31/2000', freq='D', name='idx')
expected4 = PeriodIndex([], freq='D', name='idx')
for (rng, expected) in [(rng2, expected2), (rng3, expected3),
(rng4, expected4)]:
result = base.intersection(rng)
tm.assert_index_equal(result, expected)
self.assertEqual(result.name, expected.name)
self.assertEqual(result.freq, 'D')
# empty same freq
rng = date_range('6/1/2000', '6/15/2000', freq='T')
result = rng[0:0].intersection(rng)
self.assertEqual(len(result), 0)
result = rng.intersection(rng[0:0])
self.assertEqual(len(result), 0)
def test_intersection_cases(self, sort):
base = period_range('6/1/2000', '6/30/2000', freq='D', name='idx')
# if target has the same name, it is preserved
rng2 = period_range('5/15/2000', '6/20/2000', freq='D', name='idx')
expected2 = period_range('6/1/2000', '6/20/2000', freq='D',
name='idx')
# if target name is different, it will be reset
rng3 = period_range('5/15/2000', '6/20/2000', freq='D', name='other')
expected3 = period_range('6/1/2000', '6/20/2000', freq='D',
name=None)
rng4 = period_range('7/1/2000', '7/31/2000', freq='D', name='idx')
expected4 = PeriodIndex([], name='idx', freq='D')
for (rng, expected) in [(rng2, expected2), (rng3, expected3),
(rng4, expected4)]:
result = base.intersection(rng, sort=sort)
tm.assert_index_equal(result, expected)
assert result.name == expected.name
assert result.freq == expected.freq
# non-monotonic
base = PeriodIndex(['2011-01-05', '2011-01-04', '2011-01-02',
'2011-01-03'], freq='D', name='idx')
rng2 = PeriodIndex(['2011-01-04', '2011-01-02',
'2011-02-02', '2011-02-03'],
freq='D', name='idx')
expected2 = PeriodIndex(['2011-01-04', '2011-01-02'], freq='D',
name='idx')
rng3 = PeriodIndex(['2011-01-04', '2011-01-02', '2011-02-02',
'2011-02-03'],
freq='D', name='other')
expected3 = PeriodIndex(['2011-01-04', '2011-01-02'], freq='D',
name=None)
rng4 = period_range('7/1/2000', '7/31/2000', freq='D', name='idx')
expected4 = PeriodIndex([], freq='D', name='idx')
for (rng, expected) in [(rng2, expected2), (rng3, expected3),
(rng4, expected4)]:
result = base.intersection(rng, sort=sort)
if sort is None:
expected = expected.sort_values()
tm.assert_index_equal(result, expected)
assert result.name == expected.name
assert result.freq == 'D'
# empty same freq
rng = date_range('6/1/2000', '6/15/2000', freq='T')
result = rng[0:0].intersection(rng)
assert len(result) == 0
result = rng.intersection(rng[0:0])
assert len(result) == 0
def test_intersection_cases(self, sort):
base = period_range("6/1/2000", "6/30/2000", freq="D", name="idx")
# if target has the same name, it is preserved
rng2 = period_range("5/15/2000", "6/20/2000", freq="D", name="idx")
expected2 = period_range("6/1/2000", "6/20/2000", freq="D", name="idx")
# if target name is different, it will be reset
rng3 = period_range("5/15/2000", "6/20/2000", freq="D", name="other")
expected3 = period_range("6/1/2000", "6/20/2000", freq="D", name=None)
rng4 = period_range("7/1/2000", "7/31/2000", freq="D", name="idx")
expected4 = PeriodIndex([], name="idx", freq="D")
for (rng, expected) in [
(rng2, expected2),
(rng3, expected3),
(rng4, expected4),
]:
result = base.intersection(rng, sort=sort)
tm.assert_index_equal(result, expected)
assert result.name == expected.name
assert result.freq == expected.freq
# non-monotonic
base = PeriodIndex(
["2011-01-05", "2011-01-04", "2011-01-02", "2011-01-03"],
freq="D",
name="idx",
)
rng2 = PeriodIndex(
["2011-01-04", "2011-01-02", "2011-02-02", "2011-02-03"],
freq="D",
name="idx",
)
expected2 = PeriodIndex(["2011-01-04", "2011-01-02"],
freq="D",
name="idx")
rng3 = PeriodIndex(
["2011-01-04", "2011-01-02", "2011-02-02", "2011-02-03"],
freq="D",
name="other",
)
expected3 = PeriodIndex(["2011-01-04", "2011-01-02"],
freq="D",
name=None)
rng4 = period_range("7/1/2000", "7/31/2000", freq="D", name="idx")
expected4 = PeriodIndex([], freq="D", name="idx")
for (rng, expected) in [
(rng2, expected2),
(rng3, expected3),
(rng4, expected4),
]:
result = base.intersection(rng, sort=sort)
if sort is None:
expected = expected.sort_values()
tm.assert_index_equal(result, expected)
assert result.name == expected.name
assert result.freq == "D"
# empty same freq
rng = date_range("6/1/2000", "6/15/2000", freq="T")
result = rng[0:0].intersection(rng)
assert len(result) == 0
result = rng.intersection(rng[0:0])
assert len(result) == 0