def test_get_movable_tiles_2(self):
board = Board("""
1 2 3 4
5 6 7 8
9 10 . 12
13 14 11 15
""")
self.assertEqual([7, 10, 12, 11], board.get_movable_tiles())
def test_get_movable_tiles_1(self):
board = Board("""
1 2 3 4
5 6 7 8
9 10 11 12
13 14 . 15
""")
self.assertEqual([11, 14, 15], board.get_movable_tiles())
