web-locks/non-fully-active.https.html

<!DOCTYPE html>
<meta charset=utf-8>
<title>Web Locks API: Non-fully-active documents</title>
<link rel=help href="https://w3c.github.io/web-locks/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/helpers.js"></script>

<div></div>

<script>
  function createNonFullyActiveIframe(src) {
    const iframe = document.createElement("iframe");
    document.body.appendChild(iframe);
    const { navigator, DOMException, postMessage } = iframe.contentWindow;
    iframe.remove();
    return { iframe, navigator, DOMException, postMessage };
  }

  promise_test(async t => {
    const { navigator, DOMException } = createNonFullyActiveIframe();
    const p = navigator.locks.request("foo", t.unreached_func());
    await promise_rejects_dom(t, "InvalidStateError", DOMException, p, "Request should explicitly fail");
  }, "request() on non-fully-active document must fail");

  promise_test(async t => {
    const { navigator, DOMException } = createNonFullyActiveIframe();
    const p = navigator.locks.query();
    await promise_rejects_dom(t, "InvalidStateError", DOMException, p, "Query should explicitly fail");
  }, "query() on a non-fully-active document must fail");

  promise_test(async t => {
    const { navigator, DOMException, postMessage } = createNonFullyActiveIframe();

    const p = navigator.locks.request("-", t.unreached_func());
    await promise_rejects_dom(t, "InvalidStateError", DOMException, p, "Request should explicitly fail");
  }, "request()'s fully-active check happens earlier than name validation");

  promise_test(async t => {
    const { iframe, navigator, DOMException } = createNonFullyActiveIframe();
    document.body.append(iframe);
    t.add_cleanup(() => iframe.remove());

    // Appending should create a new browsing context with a new Navigator object
    // https://html.spec.whatwg.org/multipage/iframe-embed-object.html#the-iframe-element:insert-an-element-into-a-document
    // https://html.spec.whatwg.org/multipage/system-state.html#the-navigator-object:associated-navigator
    assert_not_equals(navigator, iframe.contentWindow.navigator, "Navigator object changes");
    assert_not_equals(navigator.locks, iframe.contentWindow.navigator.locks, "LockManager object changes");

    const p = navigator.locks.request("foo", t.unreached_func());
    await promise_rejects_dom(t, "InvalidStateError", DOMException, p, "Request on the previous LockManager still must fail");
  }, "Reactivated iframe must not reuse the previous LockManager");

  promise_test(async t => {
    const iframe = document.createElement("iframe");
    document.body.appendChild(iframe);
    const worker = new iframe.contentWindow.Worker("resources/worker.js");

    const name = uniqueName(t);
    await postToWorkerAndWait(worker, { op: 'request', name });

    let query = await navigator.locks.query();
    assert_equals(query.held.length, 1, "One lock is present");

    iframe.remove();

    const lock = await navigator.locks.request(name, lock => lock);
    assert_equals(lock.name, name, "The following lock should be processed");

    query = await navigator.locks.query();
    assert_equals(query.held.length, 0, "No lock is present");
  }, "Workers owned by an unloaded iframe must release their locks");
</script>