def test_intersection_monotonic(self, index2, keeps_name, sort):
index1 = Index([5, 3, 2, 4, 1], name="index")
expected = Index([5, 3, 4])
if keeps_name:
expected.name = "index"
result = index1.intersection(index2, sort=sort)
if sort is None:
expected = expected.sort_values()
tm.assert_index_equal(result, expected)
def test_symmetric_difference(self, sort):
# smoke
index1 = Index([5, 2, 3, 4], name="index1")
index2 = Index([2, 3, 4, 1])
result = index1.symmetric_difference(index2, sort=sort)
expected = Index([5, 1])
assert tm.equalContents(result, expected)
assert result.name is None
if sort is None:
expected = expected.sort_values()
tm.assert_index_equal(result, expected)
# __xor__ syntax
with tm.assert_produces_warning(FutureWarning):
expected = index1 ^ index2
assert tm.equalContents(result, expected)
assert result.name is None
