class AddDifferentValuesToDescListTestCase(unittest.TestCase):
def setUp(self) -> None:
self.ol = OrderedList(False)
def test(self):
self.assertEqual(0, self.ol.len())
self.assertEqual(0, self.ol.len_reverse())
self.assertIsNone(self.ol.head)
self.assertIsNone(self.ol.tail)
self.ol.add(100)
self.ol.add(5)
self.ol.add(34)
self.ol.add(210)
self.ol.add(34)
self.ol.add(20)
self.ol.add(0)
self.assertEqual(7, self.ol.len())
self.assertEqual(7, self.ol.len_reverse())
self.assertEqual(210, self.ol.head.value)
self.assertEqual(100, self.ol.head.next.value)
self.assertEqual(self.ol.find(210), self.ol.head)
self.assertEqual(self.ol.find(0), self.ol.tail)
nodes = []
for i in self.ol.get_all():
nodes.append(i.value)
self.assertListEqual(nodes, [210, 100, 34, 34, 20, 5, 0])
class DeleteFromMiddleDescListWithMultipleValuesTestCase(unittest.TestCase):
def setUp(self) -> None:
self.ol = OrderedList(False)
for i in range(0, 6):
self.ol.add(i)
def test(self):
self.assertEqual(6, self.ol.len())
self.assertEqual(6, self.ol.len_reverse())
nodes = []
for i in self.ol.get_all():
nodes.append(i.value)
self.assertListEqual(nodes, [5, 4, 3, 2, 1, 0])
self.ol.delete(3)
self.assertEqual(5, self.ol.len())
self.assertEqual(5, self.ol.len_reverse())
nodes = []
for i in self.ol.get_all():
nodes.append(i.value)
self.assertListEqual(nodes, [5, 4, 2, 1, 0])
node_4 = self.ol.find(4)
node_2 = self.ol.find(2)
self.assertEqual(node_2, node_4.next)
self.assertEqual(node_4, node_2.prev)
class AddToEndDescListWithMultipleValuesTestCase(unittest.TestCase):
def setUp(self) -> None:
self.ol = OrderedList(False)
for i in range(1, 7):
self.ol.add(i)
def test(self):
self.assertEqual(6, self.ol.len())
self.assertEqual(6, self.ol.len_reverse())
self.assertEqual(1, self.ol.tail.value)
self.assertEqual(2, self.ol.tail.prev.value)
self.assertEqual(1, self.ol.tail.prev.next.value)
self.assertIsNone(self.ol.tail.next)
self.ol.add(0)
self.assertEqual(7, self.ol.len())
self.assertEqual(7, self.ol.len_reverse())
self.assertEqual(0, self.ol.tail.value)
self.assertEqual(1, self.ol.tail.prev.value)
self.assertEqual(0, self.ol.tail.prev.next.value)
self.assertEqual(self.ol.find(0), self.ol.tail)
self.assertIsNone(self.ol.tail.next)
class AddToHeadDescListWithMultipleValuesTestCase(unittest.TestCase):
def setUp(self) -> None:
self.ol = OrderedList(False)
for i in range(0, 6):
self.ol.add(i)
def test(self):
self.assertEqual(6, self.ol.len())
self.assertEqual(6, self.ol.len_reverse())
self.assertEqual(5, self.ol.head.value)
self.assertEqual(4, self.ol.head.next.value)
self.assertEqual(5, self.ol.head.next.prev.value)
self.assertEqual(0, self.ol.tail.value)
self.assertEqual(1, self.ol.tail.prev.value)
self.assertEqual(0, self.ol.tail.prev.next.value)
self.assertIsNone(self.ol.head.prev)
self.assertIsNone(self.ol.tail.next)
self.ol.add(100)
self.assertEqual(7, self.ol.len())
self.assertEqual(7, self.ol.len_reverse())
self.assertEqual(100, self.ol.head.value)
self.assertEqual(5, self.ol.head.next.value)
self.assertEqual(100, self.ol.head.next.prev.value)
self.assertEqual(self.ol.find(100), self.ol.head)
nodes = []
for i in self.ol.get_all():
nodes.append(i.value)
self.assertListEqual(nodes, [100, 5, 4, 3, 2, 1, 0])
class FindAscTestCase(unittest.TestCase):
def setUp(self) -> None:
self.ol = OrderedList(True)
for i in range(0, 6):
self.ol.add(i)
def test(self):
self.assertEqual(6, self.ol.len())
self.assertEqual(6, self.ol.len_reverse())
self.assertIsInstance(self.ol.find(0), Node)
self.assertIsInstance(self.ol.find(5), Node)
self.assertIsInstance(self.ol.find(3), Node)
self.assertEqual(6, self.ol.len())
self.assertEqual(6, self.ol.len_reverse())
def test_empty(self):
self.ol = OrderedList(True)
self.assertIsNone(self.ol.find(3))
def test_find_by_value_descending(self):
ol = OrderedList(asc=True)
items = [4, 6, 2, 8, 5]
for item in items:
ol.add(item)
node = ol.find(4)
self.assertEqual(node.value, 4)
class DeleteFromMiddleAscListWithMultipleValuesTestCase(unittest.TestCase):
def setUp(self) -> None:
self.ol = OrderedList(True)
for i in range(0, 6):
self.ol.add(i)
def test(self):
self.assertEqual(6, self.ol.len())
self.assertEqual(6, self.ol.len_reverse())
self.assertEqual(0, self.ol.head.value)
self.assertEqual(5, self.ol.tail.value)
self.assertIsNone(self.ol.head.prev)
self.assertIsNone(self.ol.tail.next)
self.ol.delete(2)
self.ol.delete(4)
self.assertEqual(4, self.ol.len())
self.assertEqual(4, self.ol.len_reverse())
self.assertEqual(self.ol.find(3).prev, self.ol.find(1))
self.assertEqual(self.ol.find(3).next, self.ol.find(5))
