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))