Blitz - WPT: viewport-units-gutter-002.html

wpt / css / css-values / viewport-units-gutter-002.html

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/css/css-values/viewport-units-gutter-002.html

<!doctype html>
<html style="overflow: auto; scrollbar-gutter: stable both-edges;">
<link rel="help" href="http://www.w3.org/TR/css3-values/#viewport-relative-lengths">
<meta name="assert" content="There is no horizontal overflow when 100vw is reduced by both-edges gutter width even when the scrollbars themselves are conditional.">

<!-- This test uses checkLayout instead of a reference because it's unclear how elements that overlap with the gutter should be laid out and painted. See https://github.com/w3c/csswg-drafts/issues/5253 -->
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>

<body style="margin: 0; padding: 0;">
  <div style="width: 100vw; height: 100px; background: orange; box-sizing: border-box; border-left: 3px solid blue; border-right: 3px solid blue;"  id="test-div"></div>

  <!-- This div is only for measuring scrollbar size -->
  <div id="measure" style="overflow: scroll;">
     <div style="min-height: 300px;"></div>
  </div>

<script>
  const scrollbarWidth = measure.offsetWidth - measure.clientWidth;
  let testDiv = document.getElementById('test-div');
  testDiv.setAttribute("data-expected-width", window.innerWidth - 2*scrollbarWidth);
  checkLayout("#test-div");
</script>

</body>
</html>