File: input-events-arrow-key-on-number-input-delete-document.html

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<!DOCTYPE html>
<html>
<head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
</head>
<body>
<iframe id="iframe"></iframe>
<script>
  const frame = document.getElementById("iframe");

  function loadIframe(doc) {
    return new Promise((resolve) => {
      frame.addEventListener("load", resolve);
      frame.srcdoc = doc;
    });
  }

  promise_test(async function() {
    await loadIframe("<input type='number'>");
    const inputElement = frame.contentDocument.querySelector("input");

    let events = [];

    inputElement.addEventListener("beforeinput", () => {
      events.push("beforeinput");
      frame.remove();
    });
    inputElement.addEventListener("input", () => {
      events.push("input");
    });
    inputElement.addEventListener("change", () => {
      events.push("change");
    });

    inputElement.focus();

    await test_driver.send_keys(inputElement, "\uE013");

    assert_array_equals(events, ['beforeinput']);
    assert_false(document.body.contains(frame));
  }, "Number input should not crash and not fire subsequent events when event handler removes document");
</script>
</body>
</html>