/* jshint ignore:start */
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/* eslint-disable */
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/* Original QUnit test: https://github.com/cowboy/jquery-throttle-debounce/blob/master/unit/unit.js */
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var module = require('qunitjs').module;
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var test = require('qunitjs').test;
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var expect = require('qunitjs').expect;
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var ok = require('qunitjs').ok;
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var equals = require('qunitjs').equal;
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var start = require('qunitjs').start;
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var stop = require('qunitjs').stop;
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var throttle = require('../throttle');
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var debounce = require('../debounce');
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QUnit.config.autostart = false;
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var pause = 500,
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delay = 100;
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function exec_many_times( each, complete ) {
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var i = 0,
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repeated,
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id;
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function start(){
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id = setInterval(function(){
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each();
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if ( ++i === 50 ) {
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clearInterval( id );
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complete( repeated ? null : function(){
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i = 0;
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repeated = true;
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setTimeout( start, pause );
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});
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}
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}, 20);
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}
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setTimeout( start, pause );
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};
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module( 'throttle' );
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test( 'delay, callback', function() {
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expect( 7 );
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stop();
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var start_time,
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i = 0,
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arr = [],
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fn = function( now ){
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arr.push( now - this )
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},
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throttled = throttle( delay, fn );
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equals( throttled.guid, fn.guid, 'throttled-callback and callback should have the same .guid' );
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exec_many_times( function(){
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var now = +new Date();
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start_time = start_time || now;
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i++;
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throttled.call( start_time, now );
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}, function( callback ){
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var len = arr.length;
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setTimeout(function(){
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//console.log( arr, arr.length, len, i );
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ok( arr.length < i, 'callback should be executed less # of times than throttled-callback' );
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equals( arr[0], 0, 'callback should be executed immediately' );
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equals( arr.length - len, 1, 'callback should be executed one more time after finish' );
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start_time = null;
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arr = [];
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i = 0;
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callback ? callback() : start();
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}, delay * 2);
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})
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});
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test( 'delay, false, callback', function() {
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expect( 7 );
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stop();
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var start_time,
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i = 0,
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arr = [],
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fn = function( now ){
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arr.push( now - this )
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},
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throttled = throttle( delay, false, fn );
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equals( throttled.guid, fn.guid, 'throttled-callback and callback should have the same .guid' );
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exec_many_times( function(){
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var now = +new Date();
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start_time = start_time || now;
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i++;
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throttled.call( start_time, now );
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}, function( callback ){
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var len = arr.length;
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setTimeout(function(){
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//console.log( arr, arr.length, len, i );
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ok( arr.length < i, 'callback should be executed less # of times than throttled-callback' );
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equals( arr[0], 0, 'callback should be executed immediately' );
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equals( arr.length - len, 1, 'callback should be executed one more time after finish' );
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start_time = null;
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arr = [];
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i = 0;
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callback ? callback() : start();
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}, delay * 2);
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})
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});
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test( 'delay, true, callback', function() {
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expect( 7 );
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stop();
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var start_time,
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i = 0,
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arr = [],
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fn = function( now ){
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arr.push( now - this )
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},
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throttled = throttle( delay, true, fn );
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equals( throttled.guid, fn.guid, 'throttled-callback and callback should have the same .guid' );
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exec_many_times( function(){
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var now = +new Date();
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start_time = start_time || now;
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i++;
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throttled.call( start_time, now );
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}, function( callback ){
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var len = arr.length;
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setTimeout(function(){
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//console.log( arr, arr.length, len, i );
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ok( arr.length < i, 'callback should be executed less # of times than throttled-callback' );
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equals( arr[0], 0, 'callback should be executed immediately' );
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equals( arr.length - len, 0, 'callback should NOT be executed one more time after finish' );
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start_time = null;
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arr = [];
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i = 0;
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callback ? callback() : start();
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}, delay * 2);
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})
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});
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module( 'debounce' );
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test( 'delay, callback', function() {
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expect( 5 );
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stop();
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var start_time,
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i = 0,
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arr = [],
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fn = function(){
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arr.push( +new Date() )
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},
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debounced = debounce( delay, fn );
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equals( debounced.guid, fn.guid, 'throttled-callback and callback should have the same .guid' );
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exec_many_times( function(){
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start_time = start_time || +new Date();
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i++;
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debounced.call();
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}, function( callback ){
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var len = arr.length,
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done_time = +new Date();
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setTimeout(function(){
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//console.log( arr[0] - done_time );
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equals( arr.length, 1, 'callback was executed once' );
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ok( arr[0] >= done_time, 'callback should be executed after the finish' );
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start_time = null;
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arr = [];
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i = 0;
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callback ? callback() : start();
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}, delay * 2);
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})
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});
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test( 'delay, false, callback', function() {
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expect( 5 );
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stop();
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var start_time,
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i = 0,
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arr = [],
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fn = function(){
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arr.push( +new Date() )
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},
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debounced = debounce( delay, false, fn );
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equals( debounced.guid, fn.guid, 'throttled-callback and callback should have the same .guid' );
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exec_many_times( function(){
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start_time = start_time || +new Date();
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i++;
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debounced.call();
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}, function( callback ){
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var len = arr.length,
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done_time = +new Date();
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setTimeout(function(){
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//console.log( arr[0] - done_time );
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equals( arr.length, 1, 'callback was executed once' );
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ok( arr[0] >= done_time, 'callback should be executed after the finish' );
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start_time = null;
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arr = [];
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i = 0;
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callback ? callback() : start();
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}, delay * 2);
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})
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});
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test( 'delay, true, callback', function() {
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expect( 5 );
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stop();
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var start_time,
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i = 0,
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arr = [],
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fn = function(){
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arr.push( +new Date() )
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},
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debounced = debounce( delay, true, fn );
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equals( debounced.guid, fn.guid, 'throttled-callback and callback should have the same .guid' );
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exec_many_times( function(){
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start_time = start_time || +new Date();
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i++;
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debounced.call();
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}, function( callback ){
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var len = arr.length;
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setTimeout(function(){
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//console.log( arr[0] - start_time );
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equals( arr.length, 1, 'callback was executed once' );
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ok( arr[0] - start_time <= 5, 'callback should be executed at the start' );
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start_time = null;
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arr = [];
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i = 0;
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callback ? callback() : start();
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}, delay * 2);
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})
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});
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