mozilla-central/testing/web-platform/tests/permissions-policy/experimental-features/focus-without-user-activation-enabled-tentative.sub.html

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Test Info: Warnings

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="./resources/common.js"></script>
<title> 'focus-without-user-activation' Policy : Correctly block automatic focus when policy disabled
</title>
<body>
<script>
"use strict"
// Note: According to html spec: https://html.spec.whatwg.org/#attr-fe-autofocus,
// topDocument's autofocus processed flag initially is false and is set to true
// after flushing autofocus candidates, i.e. flush of autofocus candidates
// only happens once per page load.
// In order to test the behaviour with both focus-without-user-activation on and off:
// two test files are necessary:
// - focus-without-user-activation-disabled-tentative.html
// - focus-without-user-activation-enabled-tentative.sub.html
// Cross origin subframe should not be able to use autofocus to steal focus
// from main frame by default. However, with focus-without-user-activation
// enabled for subframe, subframe should be able to autofocus.
function subframe_focused(subframe, event_name, timeout) {
return new Promise(resolve => {
window.onmessage = m => resolve(m.data.focused);
subframe.contentWindow.postMessage({
event: event_name,
timeout: timeout
}, "*");
});
}
promise_test( async (instance) => {
const frame = createIframe(document.body, {
sandbox: "allow-scripts allow-same-origin",
allow: "focus-without-user-activation *",
src: url
});
await wait_for_load(frame);
assert_true(await subframe_focused(frame, "autofocus"), "'autofocus' should work.");
window.focus(); // Reset focus state in subframe.
assert_true(await subframe_focused(frame, "focus-input"), "'element.focus' should work.");
window.focus(); // Reset focus state in subframe.
assert_true(await subframe_focused(frame, "focus-window"), "'window.focus' should work.");
window.focus(); // Reset focus state in subframe.
}, "When the policy is enabled, 'autofocus' and scripted focus do focus " +
"the document.");
</script>
</body>