<!DOCTYPE html>
<meta charset="utf-8">
<title>Selector: pseudo-classes (:required, :optional) for hidden input</title>
<link rel="author" title="Rune Lillesveen" href="mailto:rune@opera.com">
<link rel="help" href="https://html.spec.whatwg.org/multipage/#pseudo-classes">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
  span {
    color: red;
    background-color: pink;
  }
  :required + span {
    color: green;
  }
  :not(:optional) + span {
    background-color: lime;
  }
</style>
<input id="hiddenInput" type="hidden" required>
<span id="sibling">This text should be green on lime background.</span>
<script>
  test(() => {
    assert_equals(getComputedStyle(sibling).color, "rgb(255, 0, 0)",
      "Not matching :required for type=hidden");
    assert_equals(getComputedStyle(sibling).backgroundColor, "rgb(255, 192, 203)",
      "Matching :optional for type=hidden");

    hiddenInput.type = "text";

    assert_equals(getComputedStyle(sibling).color, "rgb(0, 128, 0)",
      "Matching :required for type=text");
    assert_equals(getComputedStyle(sibling).backgroundColor, "rgb(0, 255, 0)",
      "Matching :not(:optional) for type=text");
  }, "Evaluation of :required and :optional changes for input type change.");
</script>
