Source code
Revision control
Copy as Markdown
Other Tools
Test Info: Warnings
- This test gets skipped with pattern: os == 'win'
- Manifest: gfx/layers/apz/test/mochitest/browser.toml
/* Any copyright is dedicated to the Public Domain.
"use strict";
Services.scriptloader.loadSubScript(
this
);
Services.scriptloader.loadSubScript(
this
);
async function runTest() {
await SpecialPowers.pushPrefEnv({
set: [
...getPrefs("TOUCH_EVENTS:PAN"),
["apz.test.logging_enabled", true],
["apz.content_response_timeout", 0],
],
});
const URL_ROOT = getRootDirectory(gTestPath).replace(
);
const tab = await BrowserTestUtils.openNewForegroundTab(
gBrowser,
URL_ROOT + "helper_bug2043349_browser.html"
);
const browser = tab.linkedBrowser;
// Setup an active touchstart event listener, it does nothing, thus it should
// not prevent scrolling.
const touchstartPromise = SpecialPowers.spawn(browser, [], () => {
return new Promise(resolve => {
content.addEventListener("touchstart", () => resolve(), {
passive: false,
});
});
});
// Setup a passive touchmove event listener causing 3000ms busy state.
// This busy state should not prevent scrolling by APZ, to check it poll
// APZ scroll offsets and see if scrolling is on-going.
const apzScrolledPromise = SpecialPowers.spawn(browser, [], () => {
return new Promise(resolve => {
content.addEventListener(
"touchmove",
() => {
const utils = SpecialPowers.getDOMWindowUtils(content);
const start = content.performance.now();
while (content.performance.now() - start < 3000) {
const samples =
utils.getCompositorAPZTestData().sampledResults || [];
for (const sample of samples) {
if (SpecialPowers.wrap(sample).scrollOffsetY > 0) {
resolve(true);
return;
}
}
}
resolve(false);
},
{ passive: true, once: true }
);
});
});
// Flush above spawned tasks.
await SpecialPowers.spawn(browser, [], () => {});
await synthesizeNativeTouch(
browser,
100,
200,
SpecialPowers.DOMWindowUtils.TOUCH_CONTACT
);
await touchstartPromise;
// Now extend the content response timeout longer than the busy state
// so that timeout won't happen during it.
await SpecialPowers.pushPrefEnv({
set: [["apz.content_response_timeout", 5000]],
});
await synthesizeNativeTouch(
browser,
100,
150,
SpecialPowers.DOMWindowUtils.TOUCH_CONTACT
);
await synthesizeNativeTouch(
browser,
100,
100,
SpecialPowers.DOMWindowUtils.TOUCH_CONTACT
);
await synthesizeNativeTouch(
browser,
100,
50,
SpecialPowers.DOMWindowUtils.TOUCH_CONTACT
);
await synthesizeNativeTouch(
browser,
100,
50,
SpecialPowers.DOMWindowUtils.TOUCH_REMOVE
);
const apzScrolled = await apzScrolledPromise;
BrowserTestUtils.removeTab(tab);
return apzScrolled;
}
// Two subtests, each with a multi-second busy-wait, on potentially slow CI.
requestLongerTimeout(2);
add_task(async () => {
await SpecialPowers.pushPrefEnv({
set: [["apz.fastpath_apz_aware_listener.enabled", false]],
});
ok(
await runTest(),
"APZ scrolled during the busy-wait with fast-path disabled " +
"(no unnecessary wait for first touchmove)"
);
});
add_task(async () => {
await SpecialPowers.pushPrefEnv({
set: [["apz.fastpath_apz_aware_listener.enabled", true]],
});
ok(
await runTest(),
"APZ scrolled during the busy-wait with fast-path enabled " +
"(no unnecessary wait for first touchmove)"
);
});