Method test_reset_index_drop_convert

xarray/tests/test_dataset.py:3981–4003

(
        self,
        arg: str | list[str],
        drop: bool,
        dropped: list[str],
        converted: list[str],
        renamed: dict[str, str],
    )

        ],
    )
    def test_reset_index_drop_convert(
        self,
        arg: str | list[str],
        drop: bool,
        dropped: list[str],
        converted: list[str],
        renamed: dict[str, str],
    ) -> None:
        # regressions https://github.com/pydata/xarray/issues/6946 and
        # https://github.com/pydata/xarray/issues/6989
        # check that multi-index dimension or level coordinates are dropped, converted
        # from IndexVariable to Variable or renamed to dimension as expected
        midx = pd.MultiIndex.from_product([["a", "b"], [1, 2]], names=("foo", "bar"))
        midx_coords = Coordinates.from_pandas_multiindex(midx, "x")
        ds = xr.Dataset(coords=midx_coords)
        reset = ds.reset_index(arg, drop=drop)

        for name in dropped:
            assert name not in reset.variables
        for name in converted:
            assert_identical(reset[name].variable, ds[name].variable.to_base_variable())
        for old_name, new_name in renamed.items():
            assert_identical(ds[old_name].variable, reset[new_name].variable)

    def test_reorder_levels(self) -> None:
        ds = create_test_multiindex()