def test_move_5(self):
board = Board("""
1 2 3 4
5 6 7 8
9 10 11 .
13 14 12 15
""")
board.move(15)
expected = Board("""
1 2 3 4
5 6 7 8
9 10 11 15
13 14 12 .
""")
self.assertEqual(str(expected), str(board))
def test_move_4(self):
board = Board("""
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 .
""")
board.move(1)
expected = Board("""
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 .
""")
self.assertEqual(str(expected), str(board))
