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Queue.test.js
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48 lines (37 loc) · 888 Bytes
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import { Queue } from '../Queue'
describe('Queue', () => {
it('Check enqueue/dequeue', () => {
const queue = new Queue()
queue.enqueue(1)
queue.enqueue(2)
queue.enqueue(8)
queue.enqueue(9)
expect(queue.dequeue()).toBe(1)
expect(queue.dequeue()).toBe(2)
})
it('Check length', () => {
const queue = new Queue()
queue.enqueue(1)
queue.enqueue(2)
queue.enqueue(8)
queue.enqueue(9)
expect(queue.length()).toBe(4)
})
it('Check peek', () => {
const queue = new Queue()
queue.enqueue(1)
queue.enqueue(2)
queue.enqueue(8)
queue.enqueue(9)
expect(queue.peek()).toBe(1)
})
it('Check empty', () => {
const queue = new Queue()
expect(queue.empty()).toBeTruthy()
queue.enqueue(1)
queue.enqueue(2)
queue.enqueue(8)
queue.enqueue(9)
expect(queue.empty()).toBeFalsy()
})
})