cobalt/black_box_tests/testdata/timer_hit_in_preload.html

<!DOCTYPE html>

<head>
  <title>timer callback in preload mode test</title>
  <style>
    h1 {
      color: #c50000;
    }
  </style>
  <script src='black_box_js_test_utils.js'></script>
</head>

<body>
  <h1>
    <span>This test is for timer callback while preloading</span>
  </h1>
  <script>
    let setTimeoutMethod = new TimerTestCase('setTimeout', 1);
    let setIntervalMethod = new TimerTestCase('setInterval', 3);

    function verifyAllMethods() {
      setTimeoutMethod.verify();
      setIntervalMethod.verify();
      onEndTest();
    }

    let set_interval_id = setInterval(() => {
      setIntervalMethod.called();
    }, 300);

    setTimeout(() => {
      setTimeoutMethod.called();
      clearInterval(set_interval_id);
    }, 1150);

    setTimeout(() => {
      verifyAllMethods();
    }, 1500);
  </script>
</body>