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211 lines
4.1 KiB
211 lines
4.1 KiB
var assert = require('assert');
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var Queue = require('../lib/Queue');
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describe('Queue', function () {
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it('queue actions', function () {
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var queue = new Queue();
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var count = 0;
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function inc() {
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count++;
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}
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queue.queue(inc);
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assert.equal(count, 0);
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queue.flush();
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assert.equal(count, 1);
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});
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it('queue actions with a delay', function (done) {
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var queue = new Queue({delay: 25});
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var count = 0;
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function inc() {
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count++;
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}
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queue.queue(inc);
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assert.equal(count, 0);
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setTimeout(function () {
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assert.equal(count, 1);
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done();
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}, 50);
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});
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it('queue multiple actions with a delay', function (done) {
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var queue = new Queue({delay: 100});
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var count = 0;
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function inc() {
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count++;
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}
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queue.queue(inc);
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assert.equal(count, 0);
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setTimeout(function () {
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queue.queue(inc);
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assert.equal(count, 0);
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// flush should now occur after 100 ms from now, lets test after 75 and 125 ms
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setTimeout(function () {
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assert.equal(count, 0);
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setTimeout(function () {
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assert.equal(count, 2);
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done();
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}, 50);
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}, 75);
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}, 50);
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});
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it('flush when the configured maximum is exceeded', function () {
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var queue = new Queue({max: 4});
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var count = 0;
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function inc() {
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count++;
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}
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queue.queue(inc);
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queue.queue(inc);
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assert.equal(count, 0);
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queue.queue(inc);
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queue.queue(inc);
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queue.queue(inc);
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assert.equal(count, 5);
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});
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it('queue actions with args', function () {
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var queue = new Queue();
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var count = 0;
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function add(value) {
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count += value;
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}
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queue.queue({fn: add, args: [2]});
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assert.equal(count, 0);
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queue.flush();
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assert.equal(count, 2);
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});
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it('queue actions with args and context', function () {
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var queue = new Queue();
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var obj = {
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count: 0,
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add: function (value) {
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this.count += value;
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}
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};
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queue.queue({context: obj, fn: obj.add, args: [2]});
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assert.equal(obj.count, 0);
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queue.flush();
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assert.equal(obj.count, 2);
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});
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it('replace functions on an object', function () {
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var queue = new Queue();
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var obj = {
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count: 0,
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add: function (value) {
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this.count += value;
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}
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};
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queue.replace(obj, 'add');
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obj.add(3);
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assert.equal(obj.count, 0);
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queue.flush();
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assert.equal(obj.count, 3);
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});
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it('extend an object', function () {
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var obj = {
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count: 0,
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add: function (value) {
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this.count += value;
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},
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subtract: function (value) {
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this.count -= value;
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}
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};
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Queue.extend(obj, {replace: ['add', 'subtract']});
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obj.add(3);
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obj.subtract(1);
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assert.equal(obj.count, 0);
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obj.flush();
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assert.equal(obj.count, 2);
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});
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it('set options in constructor', function () {
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var queue = new Queue({delay: 3, max: 5});
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assert.equal(queue.delay, 3);
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assert.equal(queue.max, 5);
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});
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it('set options explicitly', function () {
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var queue = new Queue();
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queue.setOptions({delay: 3, max: 5});
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assert.equal(queue.delay, 3);
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assert.equal(queue.max, 5);
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});
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it('set option delay', function () {
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var queue = new Queue();
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queue.setOptions({delay: 3});
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assert.equal(queue.delay, 3);
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assert.equal(queue.max, Infinity);
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});
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it('set option max', function () {
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var queue = new Queue();
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queue.setOptions({max: 5});
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assert.equal(queue.delay, null);
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assert.equal(queue.max, 5);
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});
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it('destroy flushes the queue', function () {
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var queue = new Queue({max: 4});
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var count = 0;
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function inc() {
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count++;
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}
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queue.queue(inc);
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queue.destroy();
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assert.equal(count, 1)
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});
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it('destroy removes extensions', function () {
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var obj = {
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count: 0,
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add: function (value) {
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this.count += value;
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},
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subtract: function (value) {
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this.count -= value;
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}
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};
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var queue = Queue.extend(obj, {replace: ['add', 'subtract']});
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queue.destroy();
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assert.equal(queue._extended, null);
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});
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});
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