dojo/tests/unit/debounce.js

define([

    'intern!object',

    'intern/chai!assert',

    '../../debounce',

    'sinon'

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

    registerSuite({

        name: 'dojo/debounce',

        sync: function () {

            var spy = sinon.spy();

            var debouncer = debounce(spy, 100);

            debouncer();

            debouncer();

            debouncer();

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

                assert.equal(spy.callCount, 1);

            }), 1000);

        },

        async: function () {

            var spy = sinon.spy();

            var debouncer = sinon.spy(debounce(spy, 100));

            debouncer();

            setTimeout(function () {

                debouncer();

            }, 40);

            setTimeout(function () {

                debouncer();

            }, 80);

            setTimeout(function () {

                debouncer();

            }, 120);

            setTimeout(function () {

                debouncer();

            }, 180);

            setTimeout(function () {

                debouncer();

            }, 220);

            setTimeout(function () {

                debouncer();

            }, 350);

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

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

            }), 2000);

        }

    });

});