def test_del_none_from_one_down(self):
n1 = 3
ls = OrderedList(False)
ls.add(n1)
ls.delete(1)
data = ls.get_head_tail() + ls.get_list()
res = [n1, n1, n1]
self.assertEqual(data, res)
def test_del_one_from_one_up(self):
n1 = 3
ls = OrderedList(True)
ls.add(n1)
ls.delete(n1)
data = ls.get_head_tail() + ls.get_list()
res = [None, None]
self.assertEqual(data, res)
def test_del_one_last_from_many(self):
n1 = 1
n2 = 2
n3 = 3
ls = OrderedList(True)
ls.add(n1)
ls.add(n2)
ls.add(n3)
ls.delete(3)
data = ls.get_head_tail() + ls.get_list()
res = [n1, n2, 1, 2]
self.assertEqual(data, res)
def test_del_one_middle_from_many_down(self):
n1 = 2
n2 = 2
n3 = 3
ls = OrderedList(False)
ls.add(n1)
ls.add(n2)
ls.add(n3)
ls.delete(n2)
data = ls.get_head_tail() + ls.get_list()
res = [n3, n2, n3, n2]
self.assertEqual(data, res)
def test_del_one_first_from_many_up(self):
n1 = 2
n2 = 1
n3 = 3
ls = OrderedList(True)
ls.add(n1)
ls.add(n2)
ls.add(n3)
ls.delete(n2)
data = ls.get_head_tail() + ls.get_list()
res = [n1, n3, n1, n3]
self.assertEqual(data, res)
def test_random_del_down(self): # не работает с удалением всех элементов
for t in range(1000):
ls = OrderedList(False)
node_count = random.randint(0, 10)
l = []
for i in range(node_count):
node = random.randint(-100, 100)
ls.add(node)
l.append(node)
l = sorted(l, reverse=True)
del_node = random.randint(-100, 100)
ls.delete(del_node)
data = data = ls.get_head_tail() + ls.get_list()
try:
l.remove(del_node)
except:
pass
if l:
res = [l[0], l[-1]] + l
else:
res = [None, None]
self.assertEqual(data, res)
def test_random_del_up(self):
for t in range(1000):
ls = OrderedList(True)
node_count = random.randint(0, 10)
l = []
for i in range(node_count):
node = random.randint(-100, 100)
ls.add(node)
l.append(node)
l = sorted(l)
del_node = random.randint(-100, 100)
ls.delete(del_node)
data = data = ls.get_head_tail() + ls.get_list()
try:
l.remove(del_node)
except:
pass
if l:
res = [l[0], l[-1]] + l
else:
res = [None, None]
self.assertEqual(data, res)