File: interactivity-inert-html-attribute-ua.html

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<!DOCTYPE html>
<title>CSS Basic User Interface Test: UA style interactivity for [inert]</title>
<link rel="help" href="https://drafts.csswg.org/css-ui-4/#inertness">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
  .auto { interactivity: auto; }
</style>
<div id="t1" inert></div>
<div inert>
  <div id="t2"></div>
  <div id="t3" class="auto"></div>
</div>
<div id="t4" inert class="auto"></div>
<script>
  test(() => {
    assert_equals(getComputedStyle(t1).interactivity, "inert");
  }, "[inert] { interactivity: inert }");

  test(() => {
    assert_equals(getComputedStyle(t2).interactivity, "inert");
  }, "[inert] { interactivity: inert } inherited");

  test(() => {
    assert_equals(getComputedStyle(t3).interactivity, "auto");
  }, "Author interactivity:auto on a descendant can override inherited UA [inert] { interactivity: inert }");

  test(() => {
    assert_equals(getComputedStyle(t4).interactivity, "inert");
  }, "Author interactivity:auto does not override UA [inert] { interactivity: inert } on the element itself");

</script>