| 1 | /* eslint-disable @typescript-eslint/no-unsafe-member-access */ |
| 2 | import { expect } from 'expect'; |
| 3 | |
| 4 | import { Queue } from '../../src/utils/Queue'; |
| 5 | |
| 6 | describe('Queue test suite', () => { |
| 7 | it('Verify enqueue() behavior', () => { |
| 8 | const queue = new Queue(); |
| 9 | let rtSize = queue.enqueue(1); |
| 10 | expect(queue.size).toBe(1); |
| 11 | expect(rtSize).toBe(queue.size); |
| 12 | expect((queue as any).head).toBe(0); |
| 13 | expect((queue as any).tail).toBe(1); |
| 14 | expect((queue as any).items).toStrictEqual({ 0: 1 }); |
| 15 | rtSize = queue.enqueue(2); |
| 16 | expect(queue.size).toBe(2); |
| 17 | expect(rtSize).toBe(queue.size); |
| 18 | expect((queue as any).head).toBe(0); |
| 19 | expect((queue as any).tail).toBe(2); |
| 20 | expect((queue as any).items).toStrictEqual({ 0: 1, 1: 2 }); |
| 21 | rtSize = queue.enqueue(3); |
| 22 | expect(queue.size).toBe(3); |
| 23 | expect(rtSize).toBe(queue.size); |
| 24 | expect((queue as any).head).toBe(0); |
| 25 | expect((queue as any).tail).toBe(3); |
| 26 | expect((queue as any).items).toStrictEqual({ 0: 1, 1: 2, 2: 3 }); |
| 27 | }); |
| 28 | |
| 29 | it('Verify dequeue() behavior', () => { |
| 30 | const queue = new Queue(); |
| 31 | queue.enqueue(1); |
| 32 | queue.enqueue(2); |
| 33 | queue.enqueue(3); |
| 34 | let rtItem = queue.dequeue(); |
| 35 | expect(queue.size).toBe(2); |
| 36 | expect(rtItem).toBe(1); |
| 37 | expect((queue as any).head).toBe(1); |
| 38 | expect((queue as any).tail).toBe(3); |
| 39 | expect((queue as any).items).toStrictEqual({ 1: 2, 2: 3 }); |
| 40 | rtItem = queue.dequeue(); |
| 41 | expect(queue.size).toBe(1); |
| 42 | expect(rtItem).toBe(2); |
| 43 | expect((queue as any).head).toBe(2); |
| 44 | expect((queue as any).tail).toBe(3); |
| 45 | expect((queue as any).items).toStrictEqual({ 2: 3 }); |
| 46 | rtItem = queue.dequeue(); |
| 47 | expect(queue.size).toBe(0); |
| 48 | expect(rtItem).toBe(3); |
| 49 | expect((queue as any).head).toBe(0); |
| 50 | expect((queue as any).tail).toBe(0); |
| 51 | expect((queue as any).items).toStrictEqual({}); |
| 52 | }); |
| 53 | }); |