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17 changes: 10 additions & 7 deletionsData-Structures/Tree/BinarySearchTree.js
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66 changes: 66 additions & 0 deletionsData-Structures/Tree/test/BinarySearchTree.test.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,66 @@ | ||
| import { Tree } from '../BinarySearchTree.js' | ||
| describe('Binary Search Tree', () => { | ||
| let tree | ||
| beforeEach(() => { | ||
| tree = new Tree() | ||
| tree.addValue(10) | ||
| tree.addValue(5) | ||
| tree.addValue(15) | ||
| tree.addValue(3) | ||
| tree.addValue(8) | ||
| }) | ||
| test('should add values to the tree', () => { | ||
| tree.addValue(12) | ||
| expect(tree.search(12)).toBe(12) | ||
| expect(tree.search(5)).toBe(5) | ||
| expect(tree.search(15)).toBe(15) | ||
| }) | ||
| test('should perform in-order traversal', () => { | ||
| const values = [] | ||
| const output = (val) => values.push(val) | ||
| tree.traverse(output) | ||
| expect(values).toEqual([3, 5, 8, 10, 15]) | ||
| }) | ||
| test('should remove leaf nodes correctly', () => { | ||
| tree.removeValue(5) | ||
| expect(tree.search(5)).toBeNull() | ||
| }) | ||
| test('should remove nodes with one child correctly', () => { | ||
| tree.addValue(12) | ||
| tree.removeValue(15) | ||
| expect(tree.search(15)).toBeNull() | ||
| expect(tree.search(12)).toBe(12) | ||
| }) | ||
| test('should remove nodes with two children correctly', () => { | ||
| tree.addValue(18) | ||
| tree.removeValue(15) | ||
| expect(tree.search(15)).toBeNull() | ||
| expect(tree.search(18)).toBe(18) | ||
| }) | ||
| test('should return null for non-existent values', () => { | ||
| expect(tree.search(20)).toBeNull() | ||
| expect(tree.search(0)).toBeNull() | ||
| }) | ||
| test('should handle removal of root node correctly', () => { | ||
| tree.removeValue(10) | ||
| expect(tree.search(10)).toBeNull() | ||
| }) | ||
| test('should handle empty tree gracefully', () => { | ||
| const newTree = new Tree() | ||
| newTree.removeValue(22) // Should not throw | ||
| expect(newTree.search(22)).toBeNull() | ||
| }) | ||
| }) |
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