import unittest
import ohno


class test_ohno(unittest.TestCase):
    def test_simple(self):
        board = ohno.Board(4)
        board.set_initial([[-1, -1, -1, -1],
                           [-1, -1, -1, -1],
                           [-1, -1, -1, -1],
                           [-1, -1, -1, -1]])
        solved = board.solve()
        self.assertEqual(len(solved), 1)


if __name__ == '__main__':
    unittest.main()