Method test_label_from_attrs

xarray/tests/test_plot.py:192–220

(self)

        assert isinstance(self.darray.plot, DataArrayPlotAccessor)

    def test_label_from_attrs(self) -> None:
        da = self.darray.copy()
        assert "" == label_from_attrs(da)

        da.name = 0
        assert "0" == label_from_attrs(da)

        da.name = "a"
        da.attrs["units"] = "a_units"
        da.attrs["long_name"] = "a_long_name"
        da.attrs["standard_name"] = "a_standard_name"
        assert "a_long_name [a_units]" == label_from_attrs(da)

        da.attrs.pop("long_name")
        assert "a_standard_name [a_units]" == label_from_attrs(da)
        da.attrs.pop("units")
        assert "a_standard_name" == label_from_attrs(da)

        da.attrs["units"] = "a_units"
        da.attrs.pop("standard_name")
        assert "a [a_units]" == label_from_attrs(da)

        da.attrs.pop("units")
        assert "a" == label_from_attrs(da)

        # Latex strings can be longer without needing a new line:
        long_latex_name = r"$Ra_s = \mathrm{mean}(\epsilon_k) / \mu M^2_\infty$"
        da.attrs = dict(long_name=long_latex_name)
        assert label_from_attrs(da) == long_latex_name

    def test1d(self) -> None:
        self.darray[:, 0, 0].plot()  # type: ignore[call-arg]