Blitz - WPT: contain-paint-change-opacity.html

wpt / css / css-contain / contain-paint-change-opacity.html

/css/css-contain/contain-paint-change-opacity.html

<!DOCTYPE html>
<html class="reftest-wait">
<link rel="help" href="https://drafts.csswg.org/css-contain-2/#contain-property">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<script src="/common/reftest-wait.js"></script>
<script src="/common/rendering-utils.js"></script>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div style="width: 100px; background: red">
  <div id="container" style="contain: paint; opacity: 0.1">
    <div style="height: 100px; background: green; position: relative"></div>
  </div>
</div>
<script>
waitForAtLeastOneFrame().then(() => {
  container.style.opacity = 1;
  takeScreenshot();
});
</script>
</html>

/css/reference/ref-filled-green-100px-square.xht

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
 <head>
  <title>CSS Reftest Reference</title>
  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <style type="text/css"><![CDATA[
  div
  {
  background-color: green;
  height: 100px;
  width: 100px;
  }
  ]]></style>
 </head>
 <body>
  <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
  <div></div>
 </body>
</html>