parent-is-included-in-tree.html | Explore in Territory

<!DOCTYPE HTML>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>

<div id="parent">
  <div style="display:none">
    <div id="child" style="display:none">
      Cats are liquid
    </div>
  </div>
  <button aria-labelledby="child"></button>
</div>

<script>
function axElementById(id) {
    return accessibilityController.accessibleElementById(id);
}

const parentObj = axElementById('parent');
const childObj = axElementById('child');

test(function(t) {
    assert_true(Boolean(childObj));
}, "An object with display:none and @id is included in tree if it is used in a label");

test(function(t) {
    assert_equals(parentObj.childAtIndex(0), childObj);
}, "A child is included in tree");

test(function(t) {
    assert_equals(childObj.parentElement(), parentObj);
}, "A parent is included in tree");

</script>

chromium/third_party/blink/web_tests/accessibility/parent-is-included-in-tree.html