<!DOCTYPE html>
<meta charset="utf-8">
<title>HTML Test: focusgroup - Focus moves to previous item within extending focusgroup.</title>
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<link rel="help" href="https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Focusgroup/explainer.md">
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<script src="/resources/testdriver.js"></script>
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<script src="../resources/focusgroup-utils.js"></script>

<div focusgroup=wrap>
  <span id=item1 tabindex=0>item1</span>
  <div>
    <div focusgroup=extend>
      <span id=item2 tabindex=-1>item2</span>
      <span id=item3 tabindex=-1>item3</span>
    </div>
  </div>
  <span id=item4 tabindex=-1>item4</span>
</div>

<script>

  promise_test(async t => {
    var item3 = document.getElementById("item3");
    var item4 = document.getElementById("item4");

    await focusAndKeyPress(item4, kArrowUp);
    assert_equals(document.activeElement, item3);

    await focusAndKeyPress(item4, kArrowLeft);
    assert_equals(document.activeElement, item3);
  }, "When the focus is set on the last item of a focusgroup and the previous item is a descendant of a subtree, a backward arrow key press should move the focus to that previous item within the subtree.");

</script>