[poolifier.git] / tests / queue.test.js

const { expect } = require('expect')
const { Queue } = require('../lib/queue')

describe('Queue test suite', () => {
  it('Verify enqueue() behavior', () => {
    const queue = new Queue()
    let rtSize = queue.enqueue(1)
    expect(queue.size).toBe(1)
    expect(rtSize).toBe(queue.size)
    expect(queue.offset).toBe(0)
    expect(queue.maxSize).toBe(1)
    expect(queue.items).toStrictEqual([1])
    rtSize = queue.enqueue(2)
    expect(queue.size).toBe(2)
    expect(rtSize).toBe(queue.size)
    expect(queue.offset).toBe(0)
    expect(queue.maxSize).toBe(2)
    expect(queue.items).toStrictEqual([1, 2])
    rtSize = queue.enqueue(3)
    expect(queue.size).toBe(3)
    expect(rtSize).toBe(queue.size)
    expect(queue.offset).toBe(0)
    expect(queue.maxSize).toBe(3)
    expect(queue.items).toStrictEqual([1, 2, 3])
  })

  it('Verify dequeue() behavior', () => {
    const queue = new Queue()
    queue.enqueue(1)
    queue.enqueue(2)
    queue.enqueue(3)
    let rtItem = queue.dequeue()
    expect(queue.size).toBe(2)
    expect(rtItem).toBe(1)
    expect(queue.offset).toBe(1)
    expect(queue.maxSize).toBe(3)
    expect(queue.items).toStrictEqual([1, 2, 3])
    rtItem = queue.dequeue()
    expect(queue.size).toBe(1)
    expect(rtItem).toBe(2)
    expect(queue.offset).toBe(0)
    expect(queue.maxSize).toBe(3)
    expect(queue.items).toStrictEqual([3])
    rtItem = queue.dequeue()
    expect(queue.size).toBe(0)
    expect(rtItem).toBe(3)
    expect(queue.offset).toBe(0)
    expect(queue.maxSize).toBe(3)
    expect(queue.items).toStrictEqual([])
  })

  it('Verify clear() behavior', () => {
    const queue = new Queue()
    queue.enqueue(1)
    queue.enqueue(2)
    queue.enqueue(3)
    expect(queue.size).toBe(3)
    expect(queue.maxSize).toBe(3)
    queue.clear()
    expect(queue.size).toBe(0)
    expect(queue.maxSize).toBe(0)
    expect(queue.items).toStrictEqual([])
    expect(queue.offset).toBe(0)
  })
})
Commit	Line	Data
	1	const { expect } = require('expect')
	2	const { Queue } = require('../lib/queue')
	3
	4	describe('Queue test suite', () => {
	5	it('Verify enqueue() behavior', () => {
	6	const queue = new Queue()
	7	let rtSize = queue.enqueue(1)
	8	expect(queue.size).toBe(1)
	9	expect(rtSize).toBe(queue.size)
	10	expect(queue.offset).toBe(0)
	11	expect(queue.maxSize).toBe(1)
	12	expect(queue.items).toStrictEqual([1])
	13	rtSize = queue.enqueue(2)
	14	expect(queue.size).toBe(2)
	15	expect(rtSize).toBe(queue.size)
	16	expect(queue.offset).toBe(0)
	17	expect(queue.maxSize).toBe(2)
	18	expect(queue.items).toStrictEqual([1, 2])
	19	rtSize = queue.enqueue(3)
	20	expect(queue.size).toBe(3)
	21	expect(rtSize).toBe(queue.size)
	22	expect(queue.offset).toBe(0)
	23	expect(queue.maxSize).toBe(3)
	24	expect(queue.items).toStrictEqual([1, 2, 3])
	25	})
	26
	27	it('Verify dequeue() behavior', () => {
	28	const queue = new Queue()
	29	queue.enqueue(1)
	30	queue.enqueue(2)
	31	queue.enqueue(3)
	32	let rtItem = queue.dequeue()
	33	expect(queue.size).toBe(2)
	34	expect(rtItem).toBe(1)
	35	expect(queue.offset).toBe(1)
	36	expect(queue.maxSize).toBe(3)
	37	expect(queue.items).toStrictEqual([1, 2, 3])
	38	rtItem = queue.dequeue()
	39	expect(queue.size).toBe(1)
	40	expect(rtItem).toBe(2)
	41	expect(queue.offset).toBe(0)
	42	expect(queue.maxSize).toBe(3)
	43	expect(queue.items).toStrictEqual([3])
	44	rtItem = queue.dequeue()
	45	expect(queue.size).toBe(0)
	46	expect(rtItem).toBe(3)
	47	expect(queue.offset).toBe(0)
	48	expect(queue.maxSize).toBe(3)
	49	expect(queue.items).toStrictEqual([])
	50	})
	51
	52	it('Verify clear() behavior', () => {
	53	const queue = new Queue()
	54	queue.enqueue(1)
	55	queue.enqueue(2)
	56	queue.enqueue(3)
	57	expect(queue.size).toBe(3)
	58	expect(queue.maxSize).toBe(3)
	59	queue.clear()
	60	expect(queue.size).toBe(0)
	61	expect(queue.maxSize).toBe(0)
	62	expect(queue.items).toStrictEqual([])
	63	expect(queue.offset).toBe(0)
	64	})
	65	})