def METHOD_NAME(self):
    node = Dataset(source=self.source, time_key="day", data_key="data").interpolate()
    out = node.eval(node.source.coordinates.transpose("time", "lat", "lon")[:, [0, 2]])
    np.testing.assert_array_equal(out, self.data[:, [0, 2]])
    node.source.close_dataset()