class RemoveRightLeafNodeTestCase(unittest.TestCase):
def setUp(self) -> None:
self.tree = BST(None)
self.tree.AddKeyValue(4, "value_4")
self.tree.AddKeyValue(2, "value_2")
self.tree.AddKeyValue(6, "value_6")
self.tree.AddKeyValue(5, "value_5")
self.tree.AddKeyValue(7, "value_7")
def test_left(self):
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(6, self.tree.Root.RightChild.NodeKey)
self.assertEqual(5, self.tree.Root.RightChild.LeftChild.NodeKey)
self.assertEqual(7, self.tree.Root.RightChild.RightChild.NodeKey)
self.tree.DeleteNodeByKey(5)
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(6, self.tree.Root.RightChild.NodeKey)
self.assertIsNone(self.tree.Root.RightChild.LeftChild)
self.assertEqual(7, self.tree.Root.RightChild.RightChild.NodeKey)
def test_right(self):
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(6, self.tree.Root.RightChild.NodeKey)
self.assertEqual(5, self.tree.Root.RightChild.LeftChild.NodeKey)
self.assertEqual(7, self.tree.Root.RightChild.RightChild.NodeKey)
self.tree.DeleteNodeByKey(7)
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(6, self.tree.Root.RightChild.NodeKey)
self.assertIsNone(self.tree.Root.RightChild.RightChild)
self.assertEqual(5, self.tree.Root.RightChild.LeftChild.NodeKey)
class RemoveFromTreeWithSeveralNodes(unittest.TestCase):
def setUp(self) -> None:
self.tree = BST(None)
self.tree.AddKeyValue(4, "value_4")
def test_left(self):
self.tree.AddKeyValue(2, "value_2")
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(2, self.tree.Root.LeftChild.NodeKey)
self.assertEqual(4, self.tree.Root.LeftChild.Parent.NodeKey)
self.tree.DeleteNodeByKey(2)
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertIsNone(self.tree.Root.LeftChild)
self.assertIsNone(self.tree.Root.RightChild)
def test_right(self):
self.tree.AddKeyValue(6, "value_2")
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(6, self.tree.Root.RightChild.NodeKey)
self.assertEqual(4, self.tree.Root.RightChild.Parent.NodeKey)
self.tree.DeleteNodeByKey(6)
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertIsNone(self.tree.Root.LeftChild)
self.assertIsNone(self.tree.Root.RightChild)
class RemoveLeftLeafNodeTestCase(unittest.TestCase):
def setUp(self) -> None:
self.tree = BST(None)
self.tree.AddKeyValue(4, "value_4")
self.tree.AddKeyValue(2, "value_2")
self.tree.AddKeyValue(6, "value_6")
self.tree.AddKeyValue(1, "value_1")
self.tree.AddKeyValue(3, "value_3")
def test_left(self):
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(2, self.tree.Root.LeftChild.NodeKey)
self.assertEqual(1, self.tree.Root.LeftChild.LeftChild.NodeKey)
self.assertEqual(3, self.tree.Root.LeftChild.RightChild.NodeKey)
self.tree.DeleteNodeByKey(1)
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(2, self.tree.Root.LeftChild.NodeKey)
self.assertIsNone(self.tree.Root.LeftChild.LeftChild)
self.assertEqual(3, self.tree.Root.LeftChild.RightChild.NodeKey)
def test_right(self):
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(2, self.tree.Root.LeftChild.NodeKey)
self.assertEqual(1, self.tree.Root.LeftChild.LeftChild.NodeKey)
self.assertEqual(3, self.tree.Root.LeftChild.RightChild.NodeKey)
self.tree.DeleteNodeByKey(3)
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(2, self.tree.Root.LeftChild.NodeKey)
self.assertIsNone(self.tree.Root.LeftChild.RightChild)
self.assertEqual(1, self.tree.Root.LeftChild.LeftChild.NodeKey)
class RemoveFromTreeWithSingleNodeTestCase(unittest.TestCase):
def setUp(self) -> None:
self.tree = BST(None)
self.tree.AddKeyValue(4, "value_4")
def test(self):
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertFalse(self.tree.DeleteNodeByKey(10))
self.assertTrue(self.tree.DeleteNodeByKey(4))
self.assertEqual(0, self.tree.Count())
class RemoveFromEmptyTreeTestCase(unittest.TestCase):
def setUp(self) -> None:
self.tree = BST(None)
def test(self):
self.assertIsNone(self.tree.Root)
self.assertFalse(self.tree.DeleteNodeByKey(4))
class RemoveLeftNotLeafNodeWithRightChildTestCase(unittest.TestCase):
def setUp(self) -> None:
self.tree = BST(None)
self.tree.AddKeyValue(4, "value_4")
self.tree.AddKeyValue(2, "value_2")
self.tree.AddKeyValue(6, "value_6")
self.tree.AddKeyValue(3, "value_3")
def test(self):
self.assertEqual(4, self.tree.Root.NodeKey)
self.assertEqual(2, self.tree.Root.LeftChild.NodeKey)
self.assertEqual(3, self.tree.Root.LeftChild.RightChild.NodeKey)
self.tree.DeleteNodeByKey(2)
self.assertEqual(4, self.tree.Root.LeftChild.Parent.NodeKey)
self.assertEqual(3, self.tree.Root.LeftChild.NodeKey)
self.assertIsNone(self.tree.Root.LeftChild.RightChild)
self.assertIsNone(self.tree.Root.LeftChild.LeftChild)
self.assertFalse(self.tree.FindNodeByKey(2).NodeHasKey)
class TestBST(unittest.TestCase):
def setUp(self):
# Создание дерева из 15 злементов начиная от корня (8)
self.tree = BST(BSTNode(8, 80, None))
self.tree.AddKeyValue(4, 40)
self.tree.AddKeyValue(12, 120)
self.tree.AddKeyValue(2, 20)
self.tree.AddKeyValue(6, 60)
self.tree.AddKeyValue(10, 100)
self.tree.AddKeyValue(14, 140)
self.tree.AddKeyValue(1, 10)
self.tree.AddKeyValue(3, 30)
self.tree.AddKeyValue(5, 50)
self.tree.AddKeyValue(7, 70)
self.tree.AddKeyValue(9, 90)
self.tree.AddKeyValue(11, 110)
self.tree.AddKeyValue(13, 130)
self.tree.AddKeyValue(15, 150)
def test_AddKeyValue(self):
# проверка добавления элементов и создания дерево из 15 узлов
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 1, 3, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
self.tree.AddKeyValue(12, 120)
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 1, 3, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
def test_FindNodeByKey(self):
# Проверка поиска элемента по ключу
self.assertEqual(self.tree.FindNodeByKey(12).NodeHasKey, True)
self.assertEqual(self.tree.FindNodeByKey(10).NodeHasKey, True)
self.assertEqual(self.tree.FindNodeByKey(25).NodeHasKey, False)
self.assertEqual(self.tree.FindNodeByKey(0).NodeHasKey, False)
def test_FinMinMax(self):
# Проверка нахождения максимального или минимального значения
self.assertEqual(self.tree.FinMinMax(self.tree.Root, True).NodeKey, 15)
self.assertEqual(self.tree.FinMinMax(self.tree.Root, False).NodeKey, 1)
self.assertEqual(
self.tree.FinMinMax(self.tree.Root.RightChild, True).NodeKey, 15)
self.assertEqual(
self.tree.FinMinMax(self.tree.Root.RightChild.LeftChild,
False).NodeKey, 9)
#self.assertEqual(self.tree.FinMinMax(9).key, 9)
# Проверка удаления элемента:
def test_DeleteNodeByKey_1(self):
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 1, 3, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
self.tree.DeleteNodeByKey(12)
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 1, 3, 6, 5, 7, 13, 10, 9, 11, 14, 15])
def test_DeleteNodeByKey_2(self):
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 1, 3, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
self.tree.DeleteNodeByKey(14)
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 1, 3, 6, 5, 7, 12, 10, 9, 11, 15, 13])
def test_DeleteNodeByKey_3(self):
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 1, 3, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
self.tree.DeleteNodeByKey(2)
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 3, 1, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
def test_DeleteNodeByKey_4(self):
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 1, 3, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
self.tree.DeleteNodeByKey(1)
self.assertEqual([node.NodeKey for node in self.tree.GetNodeList()],
[8, 4, 2, 3, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
def test_Count(self):
# проверка подсчёта количества узлов дерева
self.assertEqual(self.tree.Count(), 15)
self.tree = BST(BSTNode(8, 80, None))
self.assertEqual(self.tree.Count(), 1)
# проверка обходов дерева в глубину ------------------------------------------
def test_DeepAllNodes(self):
# проверка in-order
self.assertEqual(
[node.NodeKey for node in list(self.tree.DeepAllNodes(0))],
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15])
self.tree = BST(BSTNode(8, 80, None))
self.assertEqual(
[node.NodeKey for node in list(self.tree.DeepAllNodes(0))], [8])
def test_DeepAllNodes(self):
# проверка post-order
self.assertEqual(
[node.NodeKey for node in list(self.tree.DeepAllNodes(1))],
[1, 3, 2, 5, 7, 6, 4, 9, 11, 10, 13, 15, 14, 12, 8])
self.tree = BST(BSTNode(8, 80, None))
self.assertEqual(
[node.NodeKey for node in list(self.tree.DeepAllNodes(0))], [8])
def test_DeepAllNodes(self):
# проверка pre-order
self.assertEqual(
[node.NodeKey for node in list(self.tree.DeepAllNodes(2))],
[8, 4, 2, 1, 3, 6, 5, 7, 12, 10, 9, 11, 14, 13, 15])
self.tree = BST(BSTNode(8, 80, None))
self.assertEqual(
[node.NodeKey for node in list(self.tree.DeepAllNodes(0))], [8])
# проверка обхода дерева в ширину --------------------------------------------
def test_WideAllNodes(self):
self.assertEqual(
[node.NodeKey for node in list(self.tree.WideAllNodes())],
[8, 4, 12, 2, 6, 10, 14, 1, 3, 5, 7, 9, 11, 13, 15])
self.tree = BST(BSTNode(8, 80, None))
self.assertEqual(
[node.NodeKey for node in list(self.tree.DeepAllNodes(0))], [8])
class RemoveFromLargeTreeTestCase(unittest.TestCase):
def setUp(self) -> None:
self.tree = BST(None)
self.tree.AddKeyValue(8, "")
self.tree.AddKeyValue(4, "")
self.tree.AddKeyValue(12, "")
self.tree.AddKeyValue(2, "")
self.tree.AddKeyValue(6, "")
self.tree.AddKeyValue(1, "")
self.tree.AddKeyValue(5, "")
self.tree.AddKeyValue(7, "")
self.tree.AddKeyValue(10, "")
self.tree.AddKeyValue(14, "")
self.tree.AddKeyValue(11, "")
self.tree.AddKeyValue(13, "")
self.tree.AddKeyValue(15, "")
self.tree.AddKeyValue(16, "")
self.assertEqual(8, self.tree.Root.NodeKey)
self.assertEqual(4, self.tree.Root.LeftChild.NodeKey)
self.assertEqual(2, self.tree.Root.LeftChild.LeftChild.NodeKey)
self.assertEqual(1,
self.tree.Root.LeftChild.LeftChild.LeftChild.NodeKey)
self.assertEqual(6, self.tree.Root.LeftChild.RightChild.NodeKey)
self.assertEqual(
7, self.tree.Root.LeftChild.RightChild.RightChild.NodeKey)
self.assertEqual(5,
self.tree.Root.LeftChild.RightChild.LeftChild.NodeKey)
self.assertEqual(12, self.tree.Root.RightChild.NodeKey)
self.assertEqual(10, self.tree.Root.RightChild.LeftChild.NodeKey)
self.assertEqual(
11, self.tree.Root.RightChild.LeftChild.RightChild.NodeKey)
self.assertEqual(14, self.tree.Root.RightChild.RightChild.NodeKey)
self.assertEqual(
13, self.tree.Root.RightChild.RightChild.LeftChild.NodeKey)
self.assertEqual(
15, self.tree.Root.RightChild.RightChild.RightChild.NodeKey)
self.assertEqual(
16,
self.tree.Root.RightChild.RightChild.RightChild.RightChild.NodeKey)
def test_1(self):
self.tree.DeleteNodeByKey(1)
self.assertEqual(2, self.tree.Root.LeftChild.LeftChild.NodeKey)
self.assertIsNone(self.tree.Root.LeftChild.LeftChild.LeftChild)
def test_2(self):
self.tree.DeleteNodeByKey(2)
self.assertEqual(1, self.tree.Root.LeftChild.LeftChild.NodeKey)
def test_3(self):
self.tree.DeleteNodeByKey(4)
self.assertEqual(5, self.tree.Root.LeftChild.NodeKey)
self.assertEqual(2, self.tree.Root.LeftChild.LeftChild.NodeKey)
self.assertEqual(6, self.tree.Root.LeftChild.RightChild.NodeKey)
self.assertEqual(
7, self.tree.Root.LeftChild.RightChild.RightChild.NodeKey)
self.assertIsNone(self.tree.Root.LeftChild.RightChild.LeftChild)
def test_4(self):
self.tree.DeleteNodeByKey(6)
self.assertEqual(4, self.tree.Root.LeftChild.NodeKey)
self.assertEqual(7, self.tree.Root.LeftChild.RightChild.NodeKey)
self.assertEqual(5,
self.tree.Root.LeftChild.RightChild.LeftChild.NodeKey)
def test_5(self):
self.tree.DeleteNodeByKey(11)
self.assertEqual(10, self.tree.Root.RightChild.LeftChild.NodeKey)
self.assertIsNone(self.tree.Root.RightChild.LeftChild.RightChild)
def test_6(self):
self.tree.DeleteNodeByKey(10)
self.assertEqual(11, self.tree.Root.RightChild.LeftChild.NodeKey)
def test_7(self):
self.tree.DeleteNodeByKey(14)
self.assertEqual(15, self.tree.Root.RightChild.RightChild.NodeKey)
self.assertEqual(
16, self.tree.Root.RightChild.RightChild.RightChild.NodeKey)
self.assertEqual(
13, self.tree.Root.RightChild.RightChild.LeftChild.NodeKey)
