def test_create_categorical(self): # GH#17513 The public CI constructor doesn't hit this code path with # instances of CategoricalIndex, but we still want to test the code ci = CategoricalIndex(["a", "b", "c"]) # First ci is self, second ci is data. result = CategoricalIndex._create_categorical(ci, ci) expected = Categorical(["a", "b", "c"]) tm.assert_categorical_equal(result, expected)