67 lines
1.6 KiB
JavaScript
67 lines
1.6 KiB
JavaScript
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'use strict';
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var assert = require('assert')
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var test = require('testit')
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var Queue = require('../')
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test('queue', function () {
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var q = new Queue();
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var length = 0;
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var results = [];
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q.on('length-changed', function (l) {
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assert(q.length === l)
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assert(length !== l)
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length = l
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})
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assert(q.length === 0);
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q.push(1);
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assert(q.length === 1);
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assert(length === 1);
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q.push(2);
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assert(q.length === 2);
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assert(length === 2);
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q.push(3);
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assert(q.length === 3);
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assert(length === 3);
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return q.pop().then(function (n) {
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assert(n === 1);
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assert(q.length === 2);
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assert(length === 2);
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return q.pop();
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}).then(function (n) {
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assert(n === 2);
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assert(q.length === 1);
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assert(length === 1);
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return q.pop();
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}).then(function (n) {
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assert(n === 3);
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assert(q.length === 0);
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assert(length === 0);
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results.push(q.pop());
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assert(q.length === -1);
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assert(length === -1);
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results.push(q.pop());
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assert(q.length === -2);
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assert(length === -2);
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results.push(q.pop());
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assert(q.length === -3);
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assert(length === -3);
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q.push(1);
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assert(q.length === -2);
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return results.shift();
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}).then(function (n) {
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assert(n === 1);
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q.push(2);
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assert(q.length === -1);
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assert(length === -1);
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return results.shift();
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}).then(function (n) {
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assert(n === 2);
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q.push(3);
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assert(q.length === 0);
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assert(length === 0);
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return results.shift();
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}).then(function (n) {
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assert(n === 3);
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});
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});
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