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from pandas import MultiIndex
class TestIsLexsorted:
def test_is_lexsorted(self):
levels = [[0, 1], [0, 1, 2]]
index = MultiIndex(
levels=levels, codes=[[0, 0, 0, 1, 1, 1], [0, 1, 2, 0, 1, 2]]
)
assert index._is_lexsorted()
index = MultiIndex(
levels=levels, codes=[[0, 0, 0, 1, 1, 1], [0, 1, 2, 0, 2, 1]]
)
assert not index._is_lexsorted()
index = MultiIndex(
levels=levels, codes=[[0, 0, 1, 0, 1, 1], [0, 1, 0, 2, 2, 1]]
)
assert not index._is_lexsorted()
assert index._lexsort_depth == 0
class TestLexsortDepth:
def test_lexsort_depth(self):
# Test that lexsort_depth return the correct sortorder
# when it was given to the MultiIndex const.
# GH#28518
levels = [[0, 1], [0, 1, 2]]
index = MultiIndex(
levels=levels, codes=[[0, 0, 0, 1, 1, 1], [0, 1, 2, 0, 1, 2]], sortorder=2
)
assert index._lexsort_depth == 2
index = MultiIndex(
levels=levels, codes=[[0, 0, 0, 1, 1, 1], [0, 1, 2, 0, 2, 1]], sortorder=1
)
assert index._lexsort_depth == 1
index = MultiIndex(
levels=levels, codes=[[0, 0, 1, 0, 1, 1], [0, 1, 0, 2, 2, 1]], sortorder=0
)
assert index._lexsort_depth == 0