def METHOD_NAME():
    """Test areas of patches."""
    y = [0, 0, 0, 1, 1, 1, 3, 3, 3]
    x = [3, 4, 6, 3, 4, 6, 3, 4, 6]
    graph = DualStructuredQuadGraph((y, x), shape=(3, 3))
    assert graph.area_of_cell == approx([2.25])