preserve-render-blocking-script.html

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This WPT test may be referenced by the following Test IDs:
- /dom/nodes/moveBefore/tentative/preserve-render-blocking-script.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

<title>Script with "blocking=render" should remain render-blocking when moved</title>

<meta name="timeout" content="long">

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

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

<script>

    window.operations = [];

</script>

<script>

    requestAnimationFrame(() => window.operations.push("render"));

</script>

<script id="target" src="resources/dummy.js?pipe=trickle(d1)" blocking="render" async></script>

</head>

<body>

<div>Some text</div>

<script>

    document.head.moveBefore(document.getElementById("target"), null);

</script>

<script>

    promise_test(async () => {

        await new Promise(resolve => requestAnimationFrame(() => resolve()));

        await new Promise(resolve => requestAnimationFrame(() => resolve()));

        assert_array_equals(operations, ["script", "render"]);

    }, "A moved script should keep its render-blocking state");

</script>

</body>