File: inert-form-control.html

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<!doctype html>
<meta charset="utf-8">
<link rel="help" href="https://html.spec.whatwg.org/#inert-subtrees">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1926304">
<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>
<title>Inert doesn't prevent initiated click from changing form control</title>
<style>
  label {
    display: block
  }
</style>
<div id="ancestor">
  <label>
    <input type=radio name=foo value=1 checked> Something
  </label>
  <label id="target">
    <input type=radio name=foo value=2> Something else
  </label>
</div>
<script>
  let targetInput = target.querySelector("input");
  ancestor.addEventListener("click", () => {
    ancestor.inert = true;
  });
  promise_test(async function () {
    assert_false(targetInput.checked, "input shouldn't be checked");
    await test_driver.click(target);
    assert_true(ancestor.inert, "click handler should've ran");
    assert_true(targetInput.checked, "input should become checked");
  });
</script>