chromium/third_party/blink/web_tests/external/wpt/css/css-properties-values-api/animation/custom-property-transition-resolution.html

<!DOCTYPE html>
<link rel="help" href="https://drafts.css-houdini.org/css-properties-values-api-1">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/utils.js"></script>
<div id="target"></div>
<script>

transition_test({
  syntax: "<resolution>",
  from: "100dppx",
  to: "200dppx",
  expected: "150dppx"
}, 'A custom property of type <resolution> can yield a CSS Transition');

</script>