css/cssom-view/cssom-getBoxQuads-002.html

<!DOCTYPE html>
<title>CSSOM View - getBoxQuads() returns consistent box for SVG test</title>
<link rel="help" href="https://drafts.csswg.org/cssom-view/#the-geometryutils-interface">
<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1746794">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<svg width="200" height="200">
  <text>
    <tspan id="t1" x="50 60 70 80 90 100" y="50">hello1</tspan>
    <tspan id="t2" x="50 60 70 80 90 100" y="100">hello2</tspan>
  </text>
</svg>
<script>
  test(function() {
    for (let element of document.querySelectorAll("tspan")) {
      let bcr = element.getBoundingClientRect();
      let quad = element.getBoxQuads()[0].getBounds();
      for (let prop of ["width", "height", "left", "top"]) {
        assert_equals(bcr[prop], quad[prop], `${element.id} ${prop}: getBoxQuads should be consistent with getBoundingClientRect`);
      }
    }
  });
</script>