def METHOD_NAME(self):
    # fmt: off
    data = np.array([
        [10, 9], [9, 18], [16, 13], [11, 15], [12, 14], [18, 12], [2, 14],
        [6, 18], [9, 9], [10, 8], [6, 17], [5, 3], [13, 19], [3, 18],
        [8, 17], [9, 7], [3, 0], [13, 18], [15, 4], [13, 16]
    ])
    exp = np.array([
        [9, 18], [13, 19], [18, 12], [15, 4], [3, 0], [5, 3], [2, 14],
        [3, 18], [6, 18], [9, 18]
    ])
    # fmt: on
    res = polygon_to_array(compute_concave_polygon(data))
    np.testing.assert_array_equal(res, exp)