22007d3fd294033132be4fffb0fbdd10c8dd46de,pandas/tests/reshape/concat/test_categorical.py,TestCategoricalConcat,test_categorical_index_preserver,#TestCategoricalConcat#,123

Before Change

        df3 = DataFrame(
            {"A": a, "B": Categorical(b, categories=list("abe"))}
        ).set_index("B")
        msg = "categories must match existing categories when appending"
        with pytest.raises(TypeError, match=msg):
            pd.concat([df2, df3])

    def test_concat_categorical_tz(self):
        // GH-23816
        a = Series(pd.date_range("2017-01-01", periods=2, tz="US/Pacific"))
        b = Series(["a", "b"], dtype="category")

After Change

            {"A": a, "B": Categorical(b, categories=list("abe"))}
        ).set_index("B")
        result = pd.concat([df2, df3])
        expected = pd.concat(
            [
                df2.set_axis(df2.index.astype(object), 0),
                df3.set_axis(df3.index.astype(object), 0),
            ]
        )
        tm.assert_frame_equal(result, expected)

    def test_concat_categorical_tz(self):
        // GH-23816

Instances