gecko-dev/layout/style/test/test_computed_style_in_crea...

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HTML

<!DOCTYPE html>
<html>
<head>
<title>Test for bug 1398619</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
</head>
<body>
<script>
SimpleTest.waitForExplicitFinish();
let referenceFontSize = getComputedStyle(document.body).fontSize;
function checkComputedStyle(desc, doc) {
try {
let fontSize = getComputedStyle(doc.body).fontSize;
is(fontSize, referenceFontSize, `${desc}: get computed font-size`);
} catch (e) {
ok(false, `${desc}: fail to get computed font-size, ${e}`);
}
}
async function runTest() {
// DOMParser
{
let parser = new DOMParser();
let doc = parser.parseFromString("<body>", "text/html");
checkComputedStyle("DOMParser", doc);
}
// DOMImplementation
{
let doc = document.implementation.createHTMLDocument("");
checkComputedStyle("DOMImplementation", doc);
}
// XMLHttpRequest
{
let xhr = new XMLHttpRequest();
xhr.open("GET", "empty.html");
xhr.responseType = "document";
let promise = new Promise(resolve => {
xhr.onload = resolve;
});
xhr.send();
await promise;
checkComputedStyle("XMLHttpRequest", xhr.responseXML);
}
}
runTest()
.catch(e => ok(false, `Exception: ${e}`))
.then(() => SimpleTest.finish());
</script>
</body>
</html>