<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Blob and GC</title>
    <meta name="help" href="https://fetch.spec.whatwg.org/#request">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <script src="../resources/gc.js"></script>
  </head>
  <body>
    <script>
async function createBlobAndGetURL()
{
    const blob = new Blob([new ArrayBuffer(1024)]);
    const url = internals.blobInternalURL(blob);
    assert_true(await internals.isBlobInternalURLRegistered(url));
    return url;
}

promise_test(async () => {
    if (!window.internals)
        return Promise.reject("no internals");

    const url = await createBlobAndGetURL();
    let counter = 0;
    do {
       gc();
       await new Promise(resolve => setTimeout(resolve, 50));
    } while (await internals.isBlobInternalURLRegistered(url) && counter++ < 100)

    assert_false(await internals.isBlobInternalURLRegistered(url));
}, "A GCed blob should get unregistered");
    </script>
  </body>
</html>