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<!DOCTYPE html>
<title>Ensure 'vertical-scroll' does not affect main frame</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/permissions-policy/experimental-features/resources/common.js"></script>
<script src="/permissions-policy/experimental-features/resources/vertical-scroll.js"></script>
html, body {
height: 100%;
width: 100%;
.spacer {
width: 100%;
height: 100%;
margin-top: 100%;
margin-bottom: 100%;
<p> Making sure there is room for vertical scroll </p>
<div class="spacer"></div>
<div class="spacer"></div>
"use strict";
// Sanity check.
test(() => {
"Expected 'vertical-scroll' to be disabled.");
}, "'vertical-scroll' disabled in main document.");
// Wait for the helper scripts to load.
promise_test(async() => {
if (window.input_api_ready)
return Promise.resolve();
await new Promise( (r) => {
window.resolve_on_input_api_ready = r;
}, "Make sure input injection API is ready.");
promise_test(async() => {
window.scrollTo(0, 0);
await inject_input("down");
assert_greater_than(window.scrollY, 0, "Page must have scrolled down.");
}, "Verify that the page scrolls vertically.");