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queue.test.js
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queue.test.js
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import * as t from './testing.js'
import * as queue from './queue.js'
class QueueItem extends queue.QueueNode {
/**
* @param {number} v
*/
constructor (v) {
super()
this.v = v
}
}
/**
* @param {t.TestCase} tc
*/
export const testEnqueueDequeue = tc => {
const N = 30
/**
* @type {queue.Queue}
*/
const q = queue.create()
t.assert(queue.isEmpty(q))
t.assert(queue.dequeue(q) === null)
for (let i = 0; i < N; i++) {
queue.enqueue(q, new QueueItem(i))
t.assert(!queue.isEmpty(q))
}
for (let i = 0; i < N; i++) {
const item = /** @type {QueueItem} */ (queue.dequeue(q))
t.assert(item !== null && item.v === i)
}
t.assert(queue.isEmpty(q))
t.assert(queue.dequeue(q) === null)
for (let i = 0; i < N; i++) {
queue.enqueue(q, new QueueItem(i))
t.assert(!queue.isEmpty(q))
}
for (let i = 0; i < N; i++) {
const item = /** @type {QueueItem} */ (queue.dequeue(q))
t.assert(item !== null && item.v === i)
}
t.assert(queue.isEmpty(q))
t.assert(queue.dequeue(q) === null)
}