def METHOD_NAME():
    """Test coordinates of nodes as x-y pairs."""
    grid = RasterModelGrid((3, 4), xy_spacing=(3.0, 2.0))
    assert_array_equal(
        grid.xy_of_node,
        np.array(
            [
                [0.0, 0.0],
                [3.0, 0.0],
                [6.0, 0.0],
                [9.0, 0.0],
                [0.0, 2.0],
                [3.0, 2.0],
                [6.0, 2.0],
                [9.0, 2.0],
                [0.0, 4.0],
                [3.0, 4.0],
                [6.0, 4.0],
                [9.0, 4.0],
            ]
        ),
    )
    assert_array_equal(grid.xy_of_node[:, 0], grid.x_of_node)
    assert_array_equal(grid.xy_of_node[:, 1], grid.y_of_node)
    with pytest.raises(ValueError):
        grid.xy_of_node[0, 0] = 1.0