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from pandas import Categorical import pandas._testing as tm class TestCategoricalSubclassing: def test_constructor(self): sc = tm.SubclassedCategorical(["a", "b", "c"]) assert isinstance(sc, tm.SubclassedCategorical) tm.assert_categorical_equal(sc, Categorical(["a", "b", "c"])) def test_from_codes(self): sc = tm.SubclassedCategorical.from_codes([1, 0, 2], ["a", "b", "c"]) assert isinstance(sc, tm.SubclassedCategorical) exp = Categorical.from_codes([1, 0, 2], ["a", "b", "c"]) tm.assert_categorical_equal(sc, exp) def test_map(self): sc = tm.SubclassedCategorical(["a", "b", "c"]) res = sc.map(lambda x: x.upper()) assert isinstance(res, tm.SubclassedCategorical) exp = Categorical(["A", "B", "C"]) tm.assert_categorical_equal(res, exp)
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