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<!DOCTYPE html>
<meta charset=utf-8>
<title>Web Locks API: Opaque origins</title>
<link rel=help href="https://wicg.github.io/web-locks/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
function load_iframe(src, sandbox) {
return new Promise(resolve => {
const iframe = document.createElement('iframe');
iframe.onload = () => { resolve(iframe); };
if (sandbox)
iframe.sandbox = sandbox;
iframe.srcdoc = src;
iframe.style.display = 'none';
document.documentElement.appendChild(iframe);
});
}
function wait_for_message(iframe) {
return new Promise(resolve => {
self.addEventListener('message', function listener(e) {
if (e.source === iframe.contentWindow) {
resolve(e.data);
self.removeEventListener('message', listener);
}
});
});
}
const script = `
<script>
"use strict";
window.onmessage = async () => {
try {
await navigator.locks.request('name', lock => {});
window.parent.postMessage({result: "no exception"}, "*");
} catch (ex) {
window.parent.postMessage({result: ex.name}, "*");
};
};
<\/script>
`;
promise_test(async t => {
const iframe = await load_iframe(script);
iframe.contentWindow.postMessage({}, '*');
const message = await wait_for_message(iframe);
assert_equals(message.result, 'no exception',
'navigator.locks.request() should not throw');
}, 'navigator.locks.request() in non-sandboxed iframe should not throw');
promise_test(async t => {
const iframe = await load_iframe(script, 'allow-scripts');
iframe.contentWindow.postMessage({}, '*');
const message = await wait_for_message(iframe);
assert_equals(message.result, 'SecurityError',
'Exception should be SecurityError');
}, 'navigator.locks.request() in sandboxed iframe should throw SecurityError');
</script>
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