Method test_lazy_load

xarray/tests/test_dataset.py:5733–5746

(self)

        assert data.sizes == roundtripped.sizes

    def test_lazy_load(self) -> None:
        store = InaccessibleVariableDataStore()
        create_test_data().dump_to_store(store)

        for decode_cf in [True, False]:
            ds = open_dataset(store, decode_cf=decode_cf)
            with pytest.raises(UnexpectedDataAccess):
                ds.load()
            with pytest.raises(UnexpectedDataAccess):
                _ = ds["var1"].values

            # these should not raise UnexpectedDataAccess:
            ds.isel(time=10)
            ds.isel(time=slice(10), dim1=[0]).isel(dim1=0, dim2=-1)

    def test_lazy_load_duck_array(self) -> None:
        store = AccessibleAsDuckArrayDataStore()