dojo/tests/unit/throttle.js

define([

    'intern!object',

    'intern/chai!assert',

    '../../throttle',

    'sinon'

], function (registerSuite, assert, throttle, sinon) {

    registerSuite({

        name: 'dojo/throttle',

        sync: function () {

            var spy = sinon.spy();

            var throttler = sinon.spy(throttle(spy, 100));

            throttler();

            throttler();

            throttler();

            setTimeout(this.async().callback(function () {

                assert.ok(spy.callCount < throttler.callCount);

            }), 1000);

        },

        async: function () {

            var spy = sinon.spy();

            var throttler = sinon.spy(throttle(spy, 100));

            throttler();

            setTimeout(function () {

                throttler();

            }, 40);

            setTimeout(function () {

                throttler();

            }, 80);

            setTimeout(function () {

                throttler();

            }, 120);

            setTimeout(function () {

                throttler();

            }, 180);

            setTimeout(function () {

                throttler();

            }, 220);

            setTimeout(function () {

                throttler();

            }, 350);

            setTimeout(this.async().callback(function () {

                assert.ok(spy.callCount < throttler.callCount);

            }), 2000);

        }

    });

});