def test_minor(self) -> None:
        a = Matrix([[1, 2, 3], [2, 4, 5], [6, 7, 8]], 3, 3)
        minors = [[-3, -14, -10], [-5, -10, -5], [-2, -1, 0]]
        for x in range(a.height()):
            for y in range(a.width()):
                self.assertEqual(minors[x][y], a.minor(x, y))