/* Copyright 2012 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// simple and incomplete implementation of promises
function Promise() {}
Promise.prototype = {
then: function (callback) {
this.callback = callback;
if ('result' in this) callback(this.result);
},
resolve: function (result) {
if ('result' in this) return;
this.result = result;
if ('callback' in this) this.callback(result);
}
};
var isCanvasSupported = (function () {
try {
document.createElement('canvas').getContext('2d').fillStyle = '#FFFFFF';
return true;
} catch (e) {
return false;
}
})();
var tests = [
{
id: 'canvas',
name: 'CANVAS element is present',
run: function () {
if (isCanvasSupported) {
return { output: 'Success', emulated: '' };
} else {
return { output: 'Failed', emulated: 'No' };
}
},
impact: 'Critical',
area: 'Core'
},
{
id: 'get-literal',
name: 'get-literal properties',
run: function () {
try {
var Test = eval('var Test = { get t() { return {}; } }; Test');
Test.t.test = true;
return { output: 'Success', emulated: '' };
} catch (e) {
return { output: 'Failed', emulated: 'No' };
}
},
impact: 'Critical',
area: 'Core'
},
{
id: 'addEventListener',
name: 'addEventListener() is present',
run: function () {
var div = document.createElement('div');
if (div.addEventListener)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'No' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Uint8Array',
name: 'Uint8Array is present',
run: function () {
if (typeof Uint8Array !== 'undefined')
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Uint16Array',
name: 'Uint16Array is present',
run: function () {
if (typeof Uint16Array !== 'undefined')
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Int32Array',
name: 'Int32Array is present',
run: function () {
if (typeof Int32Array !== 'undefined')
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Float32Array',
name: 'Float32Array is present',
run: function () {
if (typeof Float32Array !== 'undefined')
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Float64Array',
name: 'Float64Array is present',
run: function () {
if (typeof Float64Array !== 'undefined')
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Object-create',
name: 'Object.create() is present',
run: function () {
if (Object.create instanceof Function)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Object-defineProperty',
name: 'Object.defineProperty() is present',
run: function () {
if (Object.defineProperty instanceof Function)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Object-defineProperty-DOM',
name: 'Object.defineProperty() can be used on DOM objects',
run: function () {
if (!(Object.defineProperty instanceof Function))
return { output: 'Skipped', emulated: '' };
try {
// some browsers (e.g. safari) cannot use defineProperty() on DOM objects
// and thus the native version is not sufficient
Object.defineProperty(new Image(), 'id', { value: 'test' });
return { output: 'Success', emulated: '' };
} catch (e) {
return { output: 'Failed', emulated: 'Yes' };
}
},
impact: 'Important',
area: 'Viewer'
},
{
id: 'get-literal-redefine',
name: 'Defined via get-literal properties can be redefined',
run: function () {
if (!(Object.defineProperty instanceof Function))
return { output: 'Skipped', emulated: '' };
try {
var TestGetter = eval('var Test = function () {}; Test.prototype = { get id() { } }; Test');
Object.defineProperty(new TestGetter(), 'id',
{ value: '', configurable: true, enumerable: true, writable: false });
return { output: 'Success', emulated: '' };
} catch (e) {
return { output: 'Failed', emulated: 'Yes' };
}
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Object-keys',
name: 'Object.keys() is present',
run: function () {
if (Object.keys instanceof Function)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'FileReader',
name: 'FileReader is present',
run: function () {
if (typeof FileReader !== 'undefined')
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'No' };
},
impact: 'Normal',
area: 'Demo'
},
{
id: 'FileReader-readAsArrayBuffer',
name: 'FileReader.prototype.readAsArrayBuffer() is present',
run: function () {
if (typeof FileReader === 'undefined')
return { output: 'Skipped', emulated: '' };
if (FileReader.prototype.readAsArrayBuffer instanceof Function)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Normal',
area: 'Demo'
},
{
id: 'XMLHttpRequest-overrideMimeType',
name: 'XMLHttpRequest.prototype.overrideMimeType() is present',
run: function () {
if (XMLHttpRequest.prototype.overrideMimeType instanceof Function)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Important',
area: 'Viewer'
},
{
id: 'XMLHttpRequest-response',
name: 'XMLHttpRequest.prototype.response is present',
run: function () {
var xhr = new XMLHttpRequest();
if ('response' in xhr)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'bota',
name: 'btoa() is present',
run: function () {
if ('btoa' in window)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'atob',
name: 'atob() is present',
run: function () {
if ('atob' in window)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'Function-bind',
name: 'Function.prototype.bind is present',
run: function () {
if (Function.prototype.bind instanceof Function)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'dataset',
name: 'dataset is present for HTML element',
run: function () {
var div = document.createElement('div');
if ('dataset' in div)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Important',
area: 'Viewer'
},
{
id: 'classList',
name: 'classList is present for HTML element',
run: function () {
var div = document.createElement('div');
if ('classList' in div)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Important',
area: 'Viewer'
},
{
id: 'console',
name: 'console object is present',
run: function () {
if ('console' in window)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'console-log-bind',
name: 'console.log is a bind-able function',
run: function () {
if (!('console' in window))
return { output: 'Skipped', emulated: '' };
if ('bind' in console.log)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Critical',
area: 'Core'
},
{
id: 'navigator-language',
name: 'navigator.language is present',
run: function () {
if ('language' in navigator)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'Yes' };
},
impact: 'Important',
area: 'Viewer'
},
{
id: 'fillRule-evenodd',
name: 'evenodd fill rule is supported',
run: function () {
if (!isCanvasSupported)
return { output: 'Skipped', emulated: '' };
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
ctx.rect(1, 1, 50, 50);
ctx.rect(5, 5, 41, 41);
ctx.fill('evenodd');
var data = ctx.getImageData(0, 0, 50, 50).data;
var isEvenOddFill = data[20 * 4 + 20 * 200 + 3] == 0 &&
data[2 * 4 + 2 * 200 + 3] != 0;
if (isEvenOddFill)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'No' };
},
impact: 'Important',
area: 'Core'
},
{
id: 'dash-array',
name: 'dashed line style is supported',
run: function () {
if (!isCanvasSupported)
return { output: 'Skipped', emulated: '' };
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
ctx.moveTo(0,5);
ctx.lineTo(50, 5);
ctx.lineWidth = 10;
if ('setLineDash' in ctx) {
ctx.setLineDash([10, 10]);
ctx.lineDashOffset = 0;
}
ctx.stroke();
var data = ctx.getImageData(0, 0, 50, 50).data;
var isDashed = data[5 * 4 + 5 * 200 + 3] != 0 &&
data[15 * 4 + 5 * 200 + 3] == 0;
if (isDashed)
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'No' };
},
impact: 'Important',
area: 'Core'
},
{
id: 'font-face',
name: '@font-face is supported/enabled',
run: function () {
if (!isCanvasSupported)
return { output: 'Skipped', emulated: '' };
var promise = new Promise();
setTimeout(function() {
if (checkCanvas('plus'))
promise.resolve({ output: 'Success', emulated: '' });
else
promise.resolve({ output: 'Failed', emulated: 'No' });
}, 2000);
return promise;
},
impact: 'Important',
area: 'Core'
},
{
id: 'font-face-sync',
name: '@font-face loading completion detection',
run: function () {
if (!isCanvasSupported)
return { output: 'Skipped', emulated: '' };
// Add the font-face rule to the document
var rule = '@font-face { font-family: \'plus-loaded\'; src: url(data:font/opentype;base64,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); }';
var styleElement = document.getElementById('fontFaces');
var styleSheet = styleElement.sheet;
styleSheet.insertRule(rule, styleSheet.cssRules.length);
// checking if data urls are loaded synchronously
if (checkCanvas('plus-loaded'))
return { output: 'Success', emulated: '' };
// TODO checking if data urls are loaded asynchronously
var usageElement = document.createElement('div');
usageElement.setAttribute('style', 'font-family: plus-loaded; visibility: hidden;');
usageElement.textContent = '`';
document.body.appendChild(usageElement);
// verify is font is loaded
var promise = new Promise();
setTimeout(function() {
if (checkCanvas('plus-loaded'))
promise.resolve({ output: 'Failed', emulated: 'Yes' });
else
promise.resolve({ output: 'Failed', emulated: 'No' });
}, 2000);
return promise;
},
impact: 'Important',
area: 'Core'
},
{
id: 'Worker',
name: 'Worker is present',
run: function () {
if (typeof Worker != 'undefined')
return { output: 'Success', emulated: '' };
else
return { output: 'Failed', emulated: 'No' };
},
impact: 'Important',
area: 'Core'
},
{
id: 'Worker-Uint8Array',
name: 'Worker can receive/send typed arrays',
run: function () {
if (typeof Worker == 'undefined')
return { output: 'Skipped', emulated: '' };
try {
var worker = new Worker('worker-stub.js');
var promise = new Promise();
var timeout = setTimeout(function () {
promise.resolve({ output: 'Failed', emulated: '?' });
}, 5000);
worker.addEventListener('message', function (e) {
var data = e.data;
if (data.action == 'test' && data.result)
promise.resolve({ output: 'Success', emulated: '' });
else
promise.resolve({ output: 'Failed', emulated: 'Yes' });
}, false);
worker.postMessage({action: 'test',
data: new Uint8Array(60000000)}); // 60MB
return promise;
} catch (e) {
return { output: 'Failed', emulated: 'Yes' };
}
},
impact: 'Important',
area: 'Core'
},
{
id: 'Worker-transfers',
name: 'Worker can use transfers for postMessage',
run: function () {
if (typeof Worker == 'undefined')
return { output: 'Skipped', emulated: '' };
try {
var worker = new Worker('worker-stub.js');
var promise = new Promise();
var timeout = setTimeout(function () {
promise.resolve({ output: 'Failed', emulated: '?' });
}, 5000);
worker.addEventListener('message', function (e) {
var data = e.data;
if (data.action == 'test-transfers' && data.result)
promise.resolve({ output: 'Success', emulated: '' });
else
promise.resolve({ output: 'Failed', emulated: 'Yes' });
}, false);
var testObj = new Uint8Array([255]);
worker.postMessage({action: 'test-transfers',
data: testObj}, [testObj.buffer]);
return promise;
} catch (e) {
return { output: 'Failed', emulated: 'Yes' };
}
},
impact: 'Normal',
area: 'Core'
},
{
id: 'Worker-xhr-response',
name: 'XMLHttpRequest supports the response property in web workers',
run: function () {
if (typeof Worker == 'undefined')
return { output: 'Skipped', emulated: '' };
try {
var worker = new Worker('worker-stub.js');
var promise = new Promise();
var timeout = setTimeout(function () {
promise.resolve({ output: 'Failed', emulated: '?' });
}, 5000);
worker.addEventListener('message', function (e) {
var data = e.data;
if (data.action == 'xhr' && data.result)
promise.resolve({ output: 'Success', emulated: '' });
else
promise.resolve({ output: 'Failed', emulated: 'Yes' });
}, false);
worker.postMessage({action: 'xhr'});
return promise;
} catch (e) {
return { output: 'Failed', emulated: 'Yes' };
}
},
impact: 'Important',
area: 'Core'
},
{
id: 'Canvas Blend Mode',
name: 'Canvas supports extended blend modes',
run: function () {
var fail = { output: 'Failed', emulated: 'No' };
var ctx = document.createElement('canvas').getContext('2d');
ctx.canvas.width = 1;
ctx.canvas.height = 1;
var mode = 'difference';
ctx.globalCompositeOperation = mode;
if (ctx.globalCompositeOperation !== mode) {
return fail;
}
// Chrome supports setting the value, but it may not actually be
// implemented, so we have to actually test the blend mode.
ctx.fillStyle = 'red';
ctx.fillRect(0, 0, 1, 1);
ctx.fillStyle = 'blue';
ctx.fillRect(0, 0, 1, 1);
var pix = ctx.getImageData(0, 0, 1, 1).data;
if (pix[0] !== 255 || pix[1] !== 0 || pix[2] !== 255) {
return fail;
}
return { output: 'Success', emulated: '' };
},
impact: 'Important',
area: 'Core'
}
];
function checkCanvas(font) {
var canvas = document.createElement('canvas');
var canvasHolder = document.getElementById('canvasHolder');
canvasHolder.appendChild(canvas);
var ctx = canvas.getContext('2d');
ctx.font = '40px \'' + font + '\'';
ctx.fillText('\u0060', 0, 40);
var data = ctx.getImageData(0, 0, 40, 40).data;
canvasHolder.removeChild(canvas);
// detects plus figure
var minx = 40, maxx = 0, miny = 40, maxy = 0;
for (var y = 0; y < 40; y++) {
for (var x = 0; x < 40; x++) {
if (data[x * 4 + y * 160 + 3] == 0) continue; // no color
minx = Math.min(minx, x); miny = Math.min(miny, y);
maxx = Math.max(maxx, x); maxy = Math.max(maxy, y);
}
}
var colors = [[0, 0, 0], [0, 0, 0], [0, 0, 0]];
var counts = [[0, 0, 0], [0, 0, 0], [0, 0, 0]];
for (var y = miny; y <= maxy; y++) {
for (var x = minx; x <= maxx; x++) {
var i = Math.floor((x - minx) * 3 / (maxx - minx + 1));
var j = Math.floor((y - miny) * 3 / (maxy - miny + 1));
counts[i][j]++;
if (data[x * 4 + y * 160 + 3] != 0)
colors[i][j]++;
}
}
var isPlus =
colors[0][0] * 3 < counts[0][0] &&
colors[0][1] * 3 > counts[0][1] &&
colors[0][2] * 3 < counts[0][2] &&
colors[1][0] * 3 > counts[1][0] &&
colors[1][1] * 3 > counts[1][1] &&
colors[1][2] * 3 > counts[1][2] &&
colors[2][0] * 3 < counts[2][0] &&
colors[2][1] * 3 > counts[2][1] &&
colors[2][2] * 3 < counts[2][2];
return isPlus;
}