data-structure-typed/test/integration/bst.test.ts

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import {BST, BSTNode} from 'bst-typed';
describe('Individual package BST operations test', () => {
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it('should perform various operations on a Binary Search Tree with numeric values', () => {
const bst = new BST();
expect(bst).toBeInstanceOf(BST);
bst.add(11, 11);
bst.add(3, 3);
const idsOrVals = [15, 1, 8, 13, 16, 2, 6, 9, 12, 14, 4, 7, 10, 5];
bst.addMany(idsOrVals, idsOrVals);
expect(bst.root).toBeInstanceOf(BSTNode);
if (bst.root) expect(bst.root.key).toBe(11);
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expect(bst.size).toBe(16);
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expect(bst.has(6)).toBe(true);
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const node6 = bst.get(6);
expect(node6 && bst.getHeight(6)).toBe(2);
expect(node6 && bst.getDepth(6)).toBe(3);
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const nodeId10 = bst.get(10);
expect(nodeId10?.key).toBe(10);
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const nodeVal9 = bst.get(9, 'val');
expect(nodeVal9?.key).toBe(9);
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const leftMost = bst.getLeftMost();
expect(leftMost?.key).toBe(1);
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const node15 = bst.get(15);
const minNodeBySpecificNode = node15 && bst.getLeftMost(node15);
expect(minNodeBySpecificNode?.key).toBe(12);
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const subTreeSum = node15 && bst.subTreeSum(15);
expect(subTreeSum).toBe(70);
const lesserSum = bst.lesserSum(10);
expect(lesserSum).toBe(45);
expect(node15).toBeInstanceOf(BSTNode);
const node11 = bst.get(11);
expect(node11).toBeInstanceOf(BSTNode);
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const dfsInorderNodes = bst.dfs('in', 'node');
expect(dfsInorderNodes[0].key).toBe(1);
expect(dfsInorderNodes[dfsInorderNodes.length - 1].key).toBe(16);
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bst.perfectlyBalance();
expect(bst.isPerfectlyBalanced()).toBe(true);
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const bfsNodesAfterBalanced = bst.bfs('node');
expect(bfsNodesAfterBalanced[0].key).toBe(8);
expect(bfsNodesAfterBalanced[bfsNodesAfterBalanced.length - 1].key).toBe(16);
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const removed11 = bst.remove(11);
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expect(removed11).toBeInstanceOf(Array);
expect(removed11[0]).toBeDefined();
expect(removed11[0].deleted).toBeDefined();
if (removed11[0].deleted) expect(removed11[0].deleted.key).toBe(11);
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expect(bst.isAVLBalanced()).toBe(true);
expect(bst.getHeight(15)).toBe(1);
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const removed1 = bst.remove(1);
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expect(removed1).toBeInstanceOf(Array);
expect(removed1[0]).toBeDefined();
expect(removed1[0].deleted).toBeDefined();
if (removed1[0].deleted) expect(removed1[0].deleted.key).toBe(1);
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expect(bst.isAVLBalanced()).toBe(true);
expect(bst.getHeight()).toBe(4);
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const removed4 = bst.remove(4);
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expect(removed4).toBeInstanceOf(Array);
expect(removed4[0]).toBeDefined();
expect(removed4[0].deleted).toBeDefined();
if (removed4[0].deleted) expect(removed4[0].deleted.key).toBe(4);
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expect(bst.isAVLBalanced()).toBe(true);
expect(bst.getHeight()).toBe(4);
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const removed10 = bst.remove(10);
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expect(removed10).toBeInstanceOf(Array);
expect(removed10[0]).toBeDefined();
expect(removed10[0].deleted).toBeDefined();
if (removed10[0].deleted) expect(removed10[0].deleted.key).toBe(10);
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expect(bst.isAVLBalanced()).toBe(false);
expect(bst.getHeight()).toBe(4);
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const removed15 = bst.remove(15);
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expect(removed15).toBeInstanceOf(Array);
expect(removed15[0]).toBeDefined();
expect(removed15[0].deleted).toBeDefined();
if (removed15[0].deleted) expect(removed15[0].deleted.key).toBe(15);
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expect(bst.isAVLBalanced()).toBe(true);
expect(bst.getHeight()).toBe(3);
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const removed5 = bst.remove(5);
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expect(removed5).toBeInstanceOf(Array);
expect(removed5[0]).toBeDefined();
expect(removed5[0].deleted).toBeDefined();
if (removed5[0].deleted) expect(removed5[0].deleted.key).toBe(5);
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expect(bst.isAVLBalanced()).toBe(true);
expect(bst.getHeight()).toBe(3);
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const removed13 = bst.remove(13);
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expect(removed13).toBeInstanceOf(Array);
expect(removed13[0]).toBeDefined();
expect(removed13[0].deleted).toBeDefined();
if (removed13[0].deleted) expect(removed13[0].deleted.key).toBe(13);
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expect(bst.isAVLBalanced()).toBe(true);
expect(bst.getHeight()).toBe(3);
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const removed3 = bst.remove(3);
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expect(removed3).toBeInstanceOf(Array);
expect(removed3[0]).toBeDefined();
expect(removed3[0].deleted).toBeDefined();
if (removed3[0].deleted) expect(removed3[0].deleted.key).toBe(3);
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expect(bst.isAVLBalanced()).toBe(false);
expect(bst.getHeight()).toBe(3);
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const removed8 = bst.remove(8);
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expect(removed8).toBeInstanceOf(Array);
expect(removed8[0]).toBeDefined();
expect(removed8[0].deleted).toBeDefined();
if (removed8[0].deleted) expect(removed8[0].deleted.key).toBe(8);
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expect(bst.isAVLBalanced()).toBe(true);
expect(bst.getHeight()).toBe(3);
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const removed6 = bst.remove(6);
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expect(removed6).toBeInstanceOf(Array);
expect(removed6[0]).toBeDefined();
expect(removed6[0].deleted).toBeDefined();
if (removed6[0].deleted) expect(removed6[0].deleted.key).toBe(6);
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expect(bst.remove(6).length).toBe(0);
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expect(bst.isAVLBalanced()).toBe(false);
expect(bst.getHeight()).toBe(3);
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const removed7 = bst.remove(7);
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expect(removed7).toBeInstanceOf(Array);
expect(removed7[0]).toBeDefined();
expect(removed7[0].deleted).toBeDefined();
if (removed7[0].deleted) expect(removed7[0].deleted.key).toBe(7);
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expect(bst.isAVLBalanced()).toBe(false);
expect(bst.getHeight()).toBe(3);
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const removed9 = bst.remove(9);
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expect(removed9).toBeInstanceOf(Array);
expect(removed9[0]).toBeDefined();
expect(removed9[0].deleted).toBeDefined();
if (removed9[0].deleted) expect(removed9[0].deleted.key).toBe(9);
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expect(bst.isAVLBalanced()).toBe(false);
expect(bst.getHeight()).toBe(3);
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const removed14 = bst.remove(14);
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expect(removed14).toBeInstanceOf(Array);
expect(removed14[0]).toBeDefined();
expect(removed14[0].deleted).toBeDefined();
if (removed14[0].deleted) expect(removed14[0].deleted.key).toBe(14);
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expect(bst.isAVLBalanced()).toBe(false);
expect(bst.getHeight()).toBe(2);
expect(bst.isAVLBalanced()).toBe(false);
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const bfsIDs = bst.bfs();
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expect(bfsIDs[0]).toBe(2);
expect(bfsIDs[1]).toBe(12);
expect(bfsIDs[2]).toBe(16);
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const bfsNodes = bst.bfs('node');
expect(bfsNodes[0].key).toBe(2);
expect(bfsNodes[1].key).toBe(12);
expect(bfsNodes[2].key).toBe(16);
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});
it('should perform various operations on a Binary Search Tree with object values', () => {
const objBST = new BST<BSTNode<{key: number; keyA: number}>>();
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expect(objBST).toBeInstanceOf(BST);
objBST.add(11, {key: 11, keyA: 11});
objBST.add(3, {key: 3, keyA: 3});
const values = [
{key: 15, keyA: 15},
{key: 1, keyA: 1},
{key: 8, keyA: 8},
{key: 13, keyA: 13},
{key: 16, keyA: 16},
{key: 2, keyA: 2},
{key: 6, keyA: 6},
{key: 9, keyA: 9},
{key: 12, keyA: 12},
{key: 14, keyA: 14},
{key: 4, keyA: 4},
{key: 7, keyA: 7},
{key: 10, keyA: 10},
{key: 5, keyA: 5}
];
objBST.addMany(
values.map(item => item.key),
values
);
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expect(objBST.root).toBeInstanceOf(BSTNode);
if (objBST.root) expect(objBST.root.key).toBe(11);
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expect(objBST.has(6)).toBe(true);
const node6 = objBST.get(6);
expect(node6 && objBST.getHeight(node6)).toBe(2);
expect(node6 && objBST.getDepth(node6)).toBe(3);
const nodeId10 = objBST.get(10, 'key');
expect(nodeId10?.key).toBe(10);
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const nodeVal9 = objBST.get(9, 'key');
expect(nodeVal9?.key).toBe(9);
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const leftMost = objBST.getLeftMost();
expect(leftMost?.key).toBe(1);
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const node15 = objBST.get(15);
expect(node15?.val).toEqual({key: 15, keyA: 15});
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const minNodeBySpecificNode = node15 && objBST.getLeftMost(node15);
expect(minNodeBySpecificNode?.key).toBe(12);
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const subTreeSum = node15 && objBST.subTreeSum(node15);
expect(subTreeSum).toBe(70);
const lesserSum = objBST.lesserSum(10);
expect(lesserSum).toBe(45);
expect(node15).toBeInstanceOf(BSTNode);
const node11 = objBST.get(11);
expect(node11).toBeInstanceOf(BSTNode);
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const dfsInorderNodes = objBST.dfs('in', 'node');
expect(dfsInorderNodes[0].key).toBe(1);
expect(dfsInorderNodes[dfsInorderNodes.length - 1].key).toBe(16);
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objBST.perfectlyBalance();
expect(objBST.isPerfectlyBalanced()).toBe(true);
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const bfsNodesAfterBalanced = objBST.bfs('node');
expect(bfsNodesAfterBalanced[0].key).toBe(8);
expect(bfsNodesAfterBalanced[bfsNodesAfterBalanced.length - 1].key).toBe(16);
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const removed11 = objBST.remove(11);
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expect(removed11).toBeInstanceOf(Array);
expect(removed11[0]).toBeDefined();
expect(removed11[0].deleted).toBeDefined();
if (removed11[0].deleted) expect(removed11[0].deleted.key).toBe(11);
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expect(objBST.isAVLBalanced()).toBe(true);
expect(node15 && objBST.getHeight(node15)).toBe(2);
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const removed1 = objBST.remove(1);
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expect(removed1).toBeInstanceOf(Array);
expect(removed1[0]).toBeDefined();
expect(removed1[0].deleted).toBeDefined();
if (removed1[0].deleted) expect(removed1[0].deleted.key).toBe(1);
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expect(objBST.isAVLBalanced()).toBe(true);
expect(objBST.getHeight()).toBe(4);
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const removed4 = objBST.remove(4);
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expect(removed4).toBeInstanceOf(Array);
expect(removed4[0]).toBeDefined();
expect(removed4[0].deleted).toBeDefined();
if (removed4[0].deleted) expect(removed4[0].deleted.key).toBe(4);
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expect(objBST.isAVLBalanced()).toBe(true);
expect(objBST.getHeight()).toBe(4);
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const removed10 = objBST.remove(10);
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expect(removed10).toBeInstanceOf(Array);
expect(removed10[0]).toBeDefined();
expect(removed10[0].deleted).toBeDefined();
if (removed10[0].deleted) expect(removed10[0].deleted.key).toBe(10);
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expect(objBST.isAVLBalanced()).toBe(false);
expect(objBST.getHeight()).toBe(4);
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const removed15 = objBST.remove(15);
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expect(removed15).toBeInstanceOf(Array);
expect(removed15[0]).toBeDefined();
expect(removed15[0].deleted).toBeDefined();
if (removed15[0].deleted) expect(removed15[0].deleted.key).toBe(15);
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expect(objBST.isAVLBalanced()).toBe(true);
expect(objBST.getHeight()).toBe(3);
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const removed5 = objBST.remove(5);
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expect(removed5).toBeInstanceOf(Array);
expect(removed5[0]).toBeDefined();
expect(removed5[0].deleted).toBeDefined();
if (removed5[0].deleted) expect(removed5[0].deleted.key).toBe(5);
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expect(objBST.isAVLBalanced()).toBe(true);
expect(objBST.getHeight()).toBe(3);
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const removed13 = objBST.remove(13);
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expect(removed13).toBeInstanceOf(Array);
expect(removed13[0]).toBeDefined();
expect(removed13[0].deleted).toBeDefined();
if (removed13[0].deleted) expect(removed13[0].deleted.key).toBe(13);
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expect(objBST.isAVLBalanced()).toBe(true);
expect(objBST.getHeight()).toBe(3);
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const removed3 = objBST.remove(3);
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expect(removed3).toBeInstanceOf(Array);
expect(removed3[0]).toBeDefined();
expect(removed3[0].deleted).toBeDefined();
if (removed3[0].deleted) expect(removed3[0].deleted.key).toBe(3);
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expect(objBST.isAVLBalanced()).toBe(false);
expect(objBST.getHeight()).toBe(3);
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const removed8 = objBST.remove(8);
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expect(removed8).toBeInstanceOf(Array);
expect(removed8[0]).toBeDefined();
expect(removed8[0].deleted).toBeDefined();
if (removed8[0].deleted) expect(removed8[0].deleted.key).toBe(8);
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expect(objBST.isAVLBalanced()).toBe(true);
expect(objBST.getHeight()).toBe(3);
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const removed6 = objBST.remove(6);
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expect(removed6).toBeInstanceOf(Array);
expect(removed6[0]).toBeDefined();
expect(removed6[0].deleted).toBeDefined();
if (removed6[0].deleted) expect(removed6[0].deleted.key).toBe(6);
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expect(objBST.remove(6).length).toBe(0);
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expect(objBST.isAVLBalanced()).toBe(false);
expect(objBST.getHeight()).toBe(3);
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const removed7 = objBST.remove(7);
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expect(removed7).toBeInstanceOf(Array);
expect(removed7[0]).toBeDefined();
expect(removed7[0].deleted).toBeDefined();
if (removed7[0].deleted) expect(removed7[0].deleted.key).toBe(7);
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expect(objBST.isAVLBalanced()).toBe(false);
expect(objBST.getHeight()).toBe(3);
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const removed9 = objBST.remove(9);
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expect(removed9).toBeInstanceOf(Array);
expect(removed9[0]).toBeDefined();
expect(removed9[0].deleted).toBeDefined();
if (removed9[0].deleted) expect(removed9[0].deleted.key).toBe(9);
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expect(objBST.isAVLBalanced()).toBe(false);
expect(objBST.getHeight()).toBe(3);
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const removed14 = objBST.remove(14);
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expect(removed14).toBeInstanceOf(Array);
expect(removed14[0]).toBeDefined();
expect(removed14[0].deleted).toBeDefined();
if (removed14[0].deleted) expect(removed14[0].deleted.key).toBe(14);
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expect(objBST.isAVLBalanced()).toBe(false);
expect(objBST.getHeight()).toBe(2);
expect(objBST.isAVLBalanced()).toBe(false);
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const bfsIDs = objBST.bfs();
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expect(bfsIDs[0]).toBe(2);
expect(bfsIDs[1]).toBe(12);
expect(bfsIDs[2]).toBe(16);
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const bfsNodes = objBST.bfs('node');
expect(bfsNodes[0].key).toBe(2);
expect(bfsNodes[1].key).toBe(12);
expect(bfsNodes[2].key).toBe(16);
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});
});