File: input-events-arrow-key-on-number-input-prevent-default.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>
<input type="number" id="number_input">
<script>
promise_test(async function() {
  const inputElement = document.getElementById("number_input");
  let events = [];
  inputElement.addEventListener("beforeinput", (e) => {
    e.preventDefault();
    events.push("beforeinput");
  });
  inputElement.addEventListener("input", () => {
    events.push("input");
  });
  inputElement.addEventListener("change", () => {
    events.push("change");
  });

  inputElement.focus();

  await new test_driver.send_keys(inputElement, "\uE013");
  assert_array_equals(events, ['beforeinput']);
}, "Number input should not fire input and change event if the beforeinput event is default prevented");
</script>
</body>
</html>