custom-highlight-painting-invalidation-004.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-highlight-api/painting/custom-highlight-painting-invalidation-004.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html class="reftest-wait">

<meta charset="UTF-8">

<title>CSS Highlight API Test: </title>

<link rel="help" href="https://drafts.csswg.org/css-highlight-api-1/">

<link rel="match" href="custom-highlight-painting-001-ref.html">

<meta name="assert" value="::highlight overlay is correctly invalidated and repainted after adding a range to it">

<script src="resources/run-after-layout-and-paint.js"></script>

<style>

  ::highlight(example-highlight) {

    background-color: yellow;

    color: blue;

</style>

<body><span>One </span><span>two </span><span>three…</span>

<script>

  let r = new Range();

  r.setStart(document.body, 0);

  r.setEnd(document.body, 2);

  let h = new Highlight();

  CSS.highlights.set("example-highlight", h);

  // Force frame paint before modifying the Highlight.

  runAfterLayoutAndPaint(()=>{

    h.add(r);

    document.documentElement.removeAttribute("class");

});

</script>

</html>