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// META: title=Web Locks API: Exclusive Mode
// META: global=window,dedicatedworker,sharedworker,serviceworker
'use strict';
promise_test(async t => {
const granted = [];
function log_grant(n) { return () => { granted.push(n); }; }
await Promise.all([
navigator.locks.request('a', log_grant(1)),
navigator.locks.request('a', log_grant(2)),
navigator.locks.request('a', log_grant(3))
]);
assert_array_equals(granted, [1, 2, 3]);
}, 'Lock requests are granted in order');
promise_test(async t => {
const granted = [];
function log_grant(n) { return () => { granted.push(n); }; }
let inner_promise;
await navigator.locks.request('a', async lock => {
inner_promise = Promise.all([
// This will be blocked.
navigator.locks.request('a', log_grant(1)),
// But this should be grantable immediately.
navigator.locks.request('b', log_grant(2))
]);
});
await inner_promise;
assert_array_equals(granted, [2, 1]);
}, 'Requests for distinct resources can be granted');
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