oncancel-attribute.html

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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:
- /html/semantics/permission-element/usermedia/oncancel-attribute.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset="utf-8" />

<title>HTMLUserMediaElement: oncancel attribute</title>

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

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

<body>

<script>

  promise_test(async () => {

    const element = document.createElement("usermedia");

    element.setConstraints({ video: {} });

    assert_true("oncancel" in element, "oncancel should be in element");

    const cancelPromise = new Promise(resolve => {

      element.oncancel = resolve;

});

    element.dispatchEvent(new Event("cancel"));

    await cancelPromise;

  }, "oncancel IDL attribute");

  promise_test(async () => {

    const container = document.createElement("div");

    const cancelPromise = new Promise(resolve => {

      window.oncancel_called_helper = resolve;

});

    container.innerHTML = '<usermedia oncancel="window.oncancel_called_helper()"></usermedia>';

    const element = container.firstChild;

    element.dispatchEvent(new Event("cancel"));

    await cancelPromise;

    delete window.oncancel_called_helper;

  }, "oncancel HTML attribute");

  promise_test(async () => {

    const element = document.createElement("usermedia");

    const cancelPromise = new Promise(resolve => {

      element.addEventListener("cancel", resolve);

});

    element.dispatchEvent(new Event("cancel"));

    await cancelPromise;

  }, "addEventListener cancel");

</script>

</body>