mozilla-central/gfx/layers/apz/test/mochitest/browser_test_scrollbar_in_extension_popup_window.js (file symbol)

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Test Info: Warnings

/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* vim: set sts=2 sw=2 et tw=80: */
"use strict";
Services.scriptloader.loadSubScript(
this
);
Services.scriptloader.loadSubScript(
this
);
add_task(async () => {
let extension = ExtensionTestUtils.loadExtension({
manifest: {
browser_action: {
default_popup: "popup.html",
browser_style: true,
},
},
files: {
"popup.html": `
<html>
<head>
<meta charset="utf-8">
<style>
* {
padding: 0;
margin: 0;
}
body {
height: 400px;
width: 200px;
overflow-y: auto;
overflow-x: hidden;
}
li {
display: flex;
justify-content: center;
align-items: center;
height: 30vh;
font-size: 200%;
}
li:nth-child(even){
background-color: #ccc;
}
</style>
</head>
<body>
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
<li>6</li>
<li>7</li>
<li>8</li>
<li>9</li>
<li>10</li>
</ul>
</body>
</html>`,
},
});
await extension.startup();
async function takeSnapshot(browserWin) {
let browser = await openBrowserActionPanel(extension, browserWin, true);
// Ensure there's no pending paint requests.
// The below code is a simplified version of promiseAllPaintsDone in
// paint_listener.js.
await SpecialPowers.spawn(browser, [], async () => {
return new Promise(resolve => {
function waitForPaints() {
// Wait until paint suppression has ended
if (SpecialPowers.DOMWindowUtils.paintingSuppressed) {
dump`waiting for paint suppression to end...`;
content.window.setTimeout(waitForPaints, 0);
return;
}
if (SpecialPowers.DOMWindowUtils.isMozAfterPaintPending) {
dump`waiting for paint...`;
content.window.addEventListener("MozAfterPaint", waitForPaints, {
once: true,
});
return;
}
resolve();
}
waitForPaints();
});
});
const snapshot = await SpecialPowers.spawn(browser, [], async () => {
return SpecialPowers.snapshotWindowWithOptions(
content.window,
undefined /* use the default rect */,
undefined /* use the default bgcolor */,
{ DRAWWINDOW_DRAW_VIEW: true } /* to capture scrollbars */
)
.toDataURL()
.toString();
});
const popup = getBrowserActionPopup(extension, browserWin);
await closeBrowserAction(extension, browserWin);
is(popup.state, "closed", "browserAction popup has been closed");
return snapshot;
}
// First, take a snapshot with disabling APZ in the popup window, we assume
// scrollbars are rendered properly there.
await SpecialPowers.pushPrefEnv({ set: [["apz.popups.enabled", false]] });
const newWin = await BrowserTestUtils.openNewBrowserWindow();
const reference = await takeSnapshot(newWin);
await BrowserTestUtils.closeWindow(newWin);
// Then take a snapshot with enabling APZ.
await SpecialPowers.pushPrefEnv({ set: [["apz.popups.enabled", true]] });
const anotherWin = await BrowserTestUtils.openNewBrowserWindow();
const test = await takeSnapshot(anotherWin);
await BrowserTestUtils.closeWindow(anotherWin);
is(
test,
reference,
"Contents in popup window opened by extension should be same regardless of the APZ state in the window"
);
await extension.unload();
});