<!DOCTYPE html>
<html reftest-zoom="2" class="reftest-wait">
<head>

    <script type="application/javascript">
    // reftest-zoom is only applied at onload, so ensure the source-selection
    // has happened after that
    function clearWait() {
      document.documentElement.classList.remove("reftest-wait");
    }
    window.addEventListener("load", function() {
      setTimeout(function() {
        var img = document.querySelector("img");
        img.onload = clearWait;
        img.onerror = clearWait;
        img.src = img.src;
      }, 0);
    });
  </script>
</head>
<body>
  <img srcset="200.png 2x" src="50.png">
  <p>Test default source provided in src, with no default/1x in srcset</p>
</body>
</html>