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Test Info:

<meta charset="utf-8">
<title>Tests that perform main-thread scrolling</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="apz_test_utils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">
var subtests = [
{"file": "helper_scrollby_bug1531796.html"},
// This test checks that scroll anchoring isn't invoked just after an async
// scroll operation (scrolIntoView) was triggered, in other words, the async
// operation happened on the main-thread but it hasn't reached to APZ yet, so
// we don't need to set layout.css.scroll-behavior.spring-constant explicitly
// since the async scroll animation doesn't need to keep running there.
{"file": "helper_scroll_anchoring_smooth_scroll.html"},
{"file": "helper_scroll_anchoring_smooth_scroll_with_set_timeout.html", prefs: [
// Unlike helper_scroll_anchoring_smooth_scroll.html, this test checks that
// scroll anchoring __is__ invoked when an async scroll animation triggered
// by mouse wheel is running so the animation needs to keep running for a
// while.
["layout.css.scroll-behavior.spring-constant", 10]
{"file": "helper_visualscroll_clamp_restore.html", prefs: [
["apz.test.logging_enabled", true],
{"file": "helper_smoothscroll_spam.html"},
{"file": "helper_smoothscroll_spam_interleaved.html"},
{"file": "helper_mainthread_scroll_bug1662379.html", prefs: [
["apz.test.logging_enabled", true],
if (isApzEnabled()) {
window.onload = function() {
.then(SimpleTest.finish, SimpleTest.finishWithFailure);