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Bug 1402930 - Added Unit Test for Image's srcset scenario; r=bradwerth 

MozReview-Commit-ID: CrTtkEKOkuW

--HG--
extra : rebase_source : de3ab911fc55c9c982a02513fb04967f82bcc35f
This commit is contained in:
ZER0 2017-09-25 20:05:30 +02:00
Родитель 0c0d4ccc04
Коммит d076d780ef
1 изменённых файлов: 47 добавлений и 1 удалений
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48
dom/tests/mochitest/general/test_contentViewer_overrideDPPX.html
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@ -1,4 +1,4 @@
<!DOCTYPE HTML> <!DOCTYPE HTML>
<html> <html>
<head> <head>
<title>nsIContentViewer::overrideDPPX test</title> <title>nsIContentViewer::overrideDPPX test</title>
@ -10,18 +10,32 @@
<body> <body>
<iframe></iframe> <iframe></iframe>
<img>
<script type="application/javascript"> <script type="application/javascript">
SimpleTest.waitForExplicitFinish(); SimpleTest.waitForExplicitFinish();
const frameWindow = document.querySelector("iframe").contentWindow; const frameWindow = document.querySelector("iframe").contentWindow;
const image = document.querySelector("img");
const originalDPR = window.devicePixelRatio; const originalDPR = window.devicePixelRatio;
const originalZoom = SpecialPowers.getFullZoom(window); const originalZoom = SpecialPowers.getFullZoom(window);
const dppx = originalDPR * 1.5; const dppx = originalDPR * 1.5;
const zoom = originalZoom * 0.5; const zoom = originalZoom * 0.5;
const imageSets = {
"1x" : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA" +
"GUlEQVQ4jWP4z8DwnxLMMGrAqAGjBgwXAwAwxP4QWURl4wAAAABJRU5ErkJggg==",
"1.5x": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA" +
"GElEQVQ4jWNgaGD4TxEeNWDUgFEDhosBAOsIfxAZ/CYXAAAAAElFTkSuQmCC",
"2x" : "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAA" +
"GElEQVQ4jWNgYPj/nzI8asCoAaMGDBMDADKm/hBZaHKGAAAAAElFTkSuQmCC"
};
image.srcset = Object.entries(imageSets).map(v => v[1] + " " + v[0]).join(", ");
image.src = imageSets["1x"];
const setOverrideDPPX = (value) => { const setOverrideDPPX = (value) => {
if (value > 0) { if (value > 0) {
info(`override window's dppx to ${value}`); info(`override window's dppx to ${value}`);
@ -326,6 +340,38 @@ const gTests = {
}, {once: true}); }, {once: true});
frameWindow.location.reload(true); frameWindow.location.reload(true);
},
"test overrideDPPX with srcset": async function (done) {
assertValuesAreInitial();
let originalSrc = image.src;
setOverrideDPPX(1);
await new Promise(resolve => image.onload = resolve);
is(image.currentSrc, imageSets["1x"],
"Image url is properly set for 1dppx.");
setOverrideDPPX(1.5);
await new Promise(resolve => image.onload = resolve);
is(image.currentSrc, imageSets["1.5x"],
"Image url is properly set for 1.5dppx.");
setOverrideDPPX(2);
await new Promise(resolve => image.onload = resolve);
is(image.currentSrc, imageSets["2x"],
"Image is properly set for 2dppx.");
setOverrideDPPX(0);
await new Promise(resolve => image.onload = resolve);
is(image.currentSrc, originalSrc,
"Image is properly restored to the default value.");
done();
} }
}; };