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Test Info:

<meta charset="utf-8">
<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">
const prefs = [
// We need the APZ paint logging information
["apz.test.logging_enabled", true],
// Dropping the touch slop to 0 makes the tests easier to write because
// we can just do a one-pixel drag to get over the pan threshold rather
// than having to hard-code some larger value.
["apz.touch_start_tolerance", "0.0"],
// The subtests in this test do touch-drags to pan the page, but we don't
// want those pans to turn into fling animations, so we increase the
// fling-min threshold velocity to an arbitrarily large value.
["apz.fling_min_velocity_threshold", "10000"],
// The helper_bug1280013's div gets a displayport on scroll, but if the
// test takes too long the displayport can expire before we read the value
// out of the test. So we disable displayport expiry for these tests.
["apz.displayport_expiry_ms", 0],
// Similarly, explicitly enable support for meta viewport tags (which the
// test cases use) so they're processed even on desktop.
["dom.meta-viewport.enabled", true],
const subtests = [
{ file: "helper_minimum_scale_1_0.html", prefs },
{ file: "helper_no_scalable_with_initial_scale.html", prefs },
if (isApzEnabled()) {
// Run the actual test in its own window, because it requires that the
// root APZC be scrollable. Mochitest pages themselves often run
// inside an iframe which means we have no control over the root APZC.
window.onload = () => {
.then(SimpleTest.finish, SimpleTest.finishWithFailure);