def test_mirror():
tree = Tree()
l = [38, 13, 51, 10, 25, 40, 84, 12, 37, 66, 89, 95]
length = len(l)
while len(l) > 0:
key = l.pop(0)
value = chr(key)
tree.insert(key, value)
level_order = tree.level_order()
assert level_order == [38, 13, 51, 10, 25, 40, 84, 12, 37, 66, 89, 95]
tree.mirror()
level_order = tree.level_order()
pre_order = tree.pre_order()
assert level_order == [38, 51, 13, 84, 40, 25, 10, 89, 66, 37, 12, 95]
assert pre_order == [38, 51, 84, 89, 95, 66, 40, 13, 25, 37, 10, 12]
def test_in_order_pre_order_level_order():
tree = Tree()
l = [38, 13, 51, 10, 25, 40, 84, 12, 37, 66, 89, 95]
length = len(l)
while len(l) > 0:
key = l.pop(0)
value = chr(key)
tree.insert(key, value)
in_order = tree.in_order()
pre_order = tree.pre_order()
level_order = tree.level_order()
assert in_order == [10, 12, 13, 25, 37, 38, 40, 51, 66, 84, 89, 95]
assert pre_order == [38, 13, 10, 12, 25, 37, 51, 40, 84, 66, 89, 95]
assert level_order == [38, 13, 51, 10, 25, 40, 84, 12, 37, 66, 89, 95]