chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/painting/custom-highlight-painting-017.html

<!DOCTYPE html>
<meta charset="utf-8" />
<title>CSS Highlight API Test: ::highlight color with transparent originating color</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/#custom-highlight-pseudo">
<link rel="help" href="https://crbug.com/1273943">
<meta name="assert" content="This test checks that ::highlight pseudo-element uses the specified color even when the originating element text color was trasnparent.">
<link rel="match" href="/css/reference/pass_if_pass_below.html">
<style>
  div {
    color: transparent;
  }
  ::highlight(example-highlight) {
    color: black;
  }
</style>

<p>Test passes if there is the word "PASS" below.</p>
<div id="target">PASS</div>

<script>
  let r = new Range();
  r.setStart(target, 0);
  r.setEnd(target, 1);

  CSS.highlights.set("example-highlight", new Highlight(r));
</script>