Method test_coordinates_encoding

xarray/tests/test_backends.py:1377–1410

(self)

        assert_identical(actual, original["variable"])

    def test_coordinates_encoding(self) -> None:
        def equals_latlon(obj):
            return obj in {"lat lon", "lon lat"}

        original = Dataset(
            {"temp": ("x", [0, 1]), "precip": ("x", [0, -1])},
            {"lat": ("x", [2, 3]), "lon": ("x", [4, 5])},
        )
        with self.roundtrip(original) as actual:
            assert_identical(actual, original)
        with self.roundtrip(original, open_kwargs=dict(decode_coords=False)) as ds:
            assert equals_latlon(ds["temp"].attrs["coordinates"])
            assert equals_latlon(ds["precip"].attrs["coordinates"])
            assert "coordinates" not in ds.attrs
            assert "coordinates" not in ds["lat"].attrs
            assert "coordinates" not in ds["lon"].attrs

        modified = original.drop_vars(["temp", "precip"])
        with self.roundtrip(modified) as actual:
            assert_identical(actual, modified)
        with self.roundtrip(modified, open_kwargs=dict(decode_coords=False)) as ds:
            assert equals_latlon(ds.attrs["coordinates"])
            assert "coordinates" not in ds["lat"].attrs
            assert "coordinates" not in ds["lon"].attrs

        original["temp"].encoding["coordinates"] = "lat"
        with self.roundtrip(original) as actual:
            assert_identical(actual, original)
        original["precip"].encoding["coordinates"] = "lat"
        with self.roundtrip(original, open_kwargs=dict(decode_coords=True)) as ds:
            assert "lon" not in ds["temp"].encoding["coordinates"]
            assert "lon" not in ds["precip"].encoding["coordinates"]
            assert "coordinates" not in ds["lat"].encoding
            assert "coordinates" not in ds["lon"].encoding

    def test_roundtrip_endian(self) -> None:
        skip_if_zarr_format_3("zarr v3 has not implemented endian support yet")