empty-set-while-connected.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/scripting-1/the-script-element/fetch-src/empty-set-while-connected.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>Setting script src to the empty string on a connected script element</title>

<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#script-processing-model">

<link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#prepare-the-script-element">

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

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

<div id=log></div>

<script>

for (const type of ["classic", "module"]) {

  promise_test(async t => {

    const script = document.createElement("script");

    if (type === "module")

      script.type = "module";

    document.body.appendChild(script);

    t.add_cleanup(() => script.remove());

    const errorEvent = new Promise(resolve => script.onerror = resolve);

    script.onload = t.unreached_func("load event should not fire");

    script.setAttribute("src", "");

    await errorEvent;

  }, `Setting src to the empty string on a connected ${type} script fires an error event`);

</script>