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Test Info:
/* Any copyright is dedicated to the Public Domain.
"use strict";
add_task(async function test_hidden_sidebar() {
let b = document.createXULElement("browser");
for (let [k, v] of Object.entries({
type: "content",
disablefullscreen: "true",
disablehistory: "true",
flex: "1",
style: "min-width: 300px",
message: "true",
remote: "true",
maychangeremoteness: "true",
})) {
b.setAttribute(k, v);
}
let mainBrowser = gBrowser.selectedBrowser;
let panel = gBrowser.getPanel(mainBrowser);
panel.append(b);
let loaded = BrowserTestUtils.browserLoaded(b);
BrowserTestUtils.startLoadingURIString(
b,
`data:text/html,<!doctype html><style>
@keyframes fade-in {
from {
opacity: .25;
}
to {
opacity: 1;
}
</style>
<div style="
animation-name: fade-in;
animation-direction: alternate;
animation-duration: 1s;
animation-iteration-count: infinite;
animation-timing-function: ease-in-out;
background-color: red;
height: 500px;
width: 100%;
"></div>`
);
await loaded;
ok(b, "Browser was created.");
await SpecialPowers.spawn(b, [], async () => {
await new Promise(r =>
content.requestAnimationFrame(() => content.requestAnimationFrame(r))
);
});
b.hidden = true;
ok(b.hidden, "Browser should be hidden.");
// Now the framework will test to see vsync goes away
});