mq-non-matching-lazy-load.tentative.html

<!DOCTYPE html>
    <meta charset=utf-8>
    <link rel="help" href="https://www.w3.org/TR/CSS2/cascade.html#at-import" />
    <script type="text/javascript" src="/resources/testharness.js"></script>
    <script type="text/javascript" src="/resources/testharnessreport.js"></script>
    <script>
      const start_fetching_time = performance.now();
    </script>
    <style type="text/css">
      @import "./resources/mq-non-matching-lazy-load-style.css?pipe=trickle(d1)" print;
    </style>
    <script>
      const end_fetching_time = performance.now();
      const total_time_elapsed = (end_fetching_time - start_fetching_time);
      test(() =>
        assert_less_than(total_time_elapsed, 1000)
        ,"Ensure browser renders the page without waiting for non matching @import style");
    </script>

chromium/third_party/blink/web_tests/external/wpt/css/mediaqueries/mq-non-matching-lazy-load.tentative.html