blobs.html - mozsearch

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /webmessaging/broadcastchannel/blobs.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset=utf-8>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="/common/gc.js"></script>

<script>

async_test(t => {

    const c1 = new BroadcastChannel('blob');

    const c2 = new BroadcastChannel('blob');

    const c3 = new BroadcastChannel('blob');

    let readCount = 0;

    c2.onmessage = t.step_func(e => {

        // check blob

        assert_true('blob' in e.data);

        assert_true(e.data.blob instanceof Blob);

        assert_equals(e.data.blob.size, 6);

        const reader = new FileReader();

        reader.onerror = t.unreached_func();

        reader.onload = t.step_func(() => {

            assert_equals(reader.result, 'foobar');

            if (++readCount == 2)

              t.done();

});

        reader.readAsText(e.data.blob);

});

    c3.onmessage = c2.onmessage;

    (() => {

      c1.postMessage({blob: new Blob(['foo', 'bar'])});

    })();

    garbageCollect();

  }, 'Blobs work on BroadcastChannel');

async_test(t => {

    const c1 = new BroadcastChannel('blobworker');

    const c2 = new BroadcastChannel('blobworker');

    const events = [];

    const verifyEvents = function() {

        assert_equals(events.length, 5);

        assert_equals(events[0], 'from worker');

        assert_equals(events[1], 'from worker');

        assert_true(events[2].blob instanceof Blob);

        assert_equals(events[2].blob.size, 11);

        assert_true(events[3].blob instanceof Blob);

        assert_equals(events[3].blob.size, 11);

        assert_equals(events[4], 'done');

        const reader = new FileReader();

        reader.onerror = t.unreached_func();

        reader.onload = t.step_func(() => {

            assert_equals(reader.result, 'hello-world');

            t.done();

});

        reader.readAsText(events[3].blob);

};

    let receivedDone = false;

    let receivedWorkerDone = false;

    c1.onmessage = e => events.push(e.data);

    c2.onmessage = e => events.push(e.data);

    c2.addEventListener('message', t.step_func(e => {

        if (e.data.blob)

          c1.postMessage('done');

        if (e.data === 'done')

          receivedDone = true;

        if (receivedDone && receivedWorkerDone)

          verifyEvents();

      }));

    const worker = new Worker('resources/worker.js');

    worker.onmessage = t.step_func(e => {

        receivedWorkerDone = true;

        if (receivedDone && receivedWorkerDone)

          verifyEvents();

});

    worker.postMessage({channel: 'blobworker'});

    worker.postMessage({blob: ['hello-world']});

  }, 'Blobs work with workers on BroadcastChannel');

</script>