import unittest


class TestIslandPerimeter(unittest.TestCase):

    def test_island_perimeter(self):
        solution = Solution()
        self.assertRaises(TypeError, solution.island_perimeter, None)
        data = [[1, 0]]
        expected = 4
        self.assertEqual(solution.island_perimeter(data), expected)
        data = [[0, 1, 0, 0],
                [1, 1, 1, 0],
                [0, 1, 0, 0],
                [1, 1, 0, 0]]
        expected = 16
        self.assertEqual(solution.island_perimeter(data), expected)
        print('Success: test_island_perimeter')


def main():
    test = TestIslandPerimeter()
    test.test_island_perimeter()


if __name__ == '__main__':
    main()