LayoutTests/http/tests/eventloop/queue-task-across-frames.html

<!DOCTYPE html>
<html>
<body>
<script src="../resources/js-test-pre.js"></script>
<script>

description('This tests the order by which tasks are scheduled across documents of similar origins.');

if (!window.internals)
    testFailed('This test relies on window.internals');
else {
    jsTestIsAsync = true;
    logs = [];

    frame1 = document.createElement('iframe');
    document.body.appendChild(frame1);

    frame2 = document.createElement('iframe');
    frame2.src = 'resources/eventloop-helper.html';
    frame2.addEventListener('load', runTest);
    document.body.appendChild(frame2);
}

function runTest() {
    internals.queueTask("DOMManipulation", () => logs.push('1'));
    frame1.contentWindow.internals.queueTask("DOMManipulation", () => logs.push('2'));
    internals.queueTask("DOMManipulation", () => logs.push('3'));
    frame2.contentWindow.internals.queueTask("DOMManipulation", () => logs.push('4'));
    frame1.contentWindow.internals.queueTask("DOMManipulation", () => logs.push('5'));
    internals.queueTask("DOMManipulation", () => logs.push('6'));

    setTimeout(() => {
        shouldBeEqualToString('logs.join(", ")', '1, 2, 3, 4, 5, 6');
        shouldBeTrue('internals.hasSameEventLoopAs(frame1.contentWindow)');
        shouldBeTrue('internals.hasSameEventLoopAs(frame2.contentWindow)');
        finishJSTest();
    }, 100);
}

successfullyParsed = true;

</script>
<script src="../resources/js-test-post.js"></script>
</body>
</html>