<!DOCTYPE html>
<meta charset="utf-8">
<title>Include display:contents elements recursively when calculating bounding rect for a ranges</title>
<link rel="help" href="https://drafts.csswg.org/cssom-view-1/#dom-range-getboundingclientrect">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="container">
  <div id="spacerBefore">spacer before</div>
  <div style="display:contents">
    <div style="height:30px; background:lightblue">
      HEIGHT: 30px
    </div>
    <div style="display:contents">
      <div style="display:contents">
        <div style="height:30px; background:lightblue">
          HEIGHT: 30px
        </div>
      </div>
    </div>
  </div>
  <div id="spacerAfter">spacer after</div>
</div>
<script>
  test(function () {
    const spacerBefore = document.getElementById("spacerBefore");
    const spacerAfter = document.getElementById("spacerAfter");

    const expected = spacerAfter.getBoundingClientRect().top - spacerBefore.getBoundingClientRect().bottom;

    const rangeBetweenSpacers = document.createRange();
    rangeBetweenSpacers.setStartAfter(spacerBefore);
    rangeBetweenSpacers.setEndBefore(spacerAfter);

    const actual = rangeBetweenSpacers.getBoundingClientRect().height;

    assert_true(actual > 0, "range has vertical height");
    assert_equals(expected, actual, "range.getBoundingClientRect().height");
  }, "the space between elements using a range should be the same as using another method")
</script>
