def test_is_tile_movable_2(self):
board = Board("""
1 2 3 4
5 6 7 8
9 10 11 12
13 14 . 15
""")
self.assertFalse(board.is_tile_movable(12))
def test_is_tile_movable_1(self):
board = Board("""
1 2 3 4
5 6 7 8
9 10 11 12
13 14 . 15
""")
self.assertTrue(board.is_tile_movable(15))
