def test_get_indexer_non_unique(self):
idx1 = CategoricalIndex(list("aabcde"), categories=list("edabc"))
idx2 = CategoricalIndex(list("abf"))
for indexer in [idx2, list("abf"), Index(list("abf"))]:
msg = "Reindexing only valid with uniquely valued Index objects"
with pytest.raises(InvalidIndexError, match=msg):
idx1.get_indexer(indexer)
r1, _ = idx1.get_indexer_non_unique(indexer)
expected = np.array([0, 1, 2, -1], dtype=np.intp)
tm.assert_almost_equal(r1, expected)
