third_party/WebKit/LayoutTests/http/tests/misc/client-hint-accept-on-subresource.html

   1 <!DOCTYPE html>
   2 <script src="../resources/testharness.js"></script>
   3 <script src="../resources/testharnessreport.js"></script>
   4 <body>
   5     <!-- The following script's response contains an Accept-CH header, and therefore must be synchronous
   6          for the purpose of this test -->
   7     <script src="../resources/accept-ch.php"></script>
   8     <script>
   9         var t = async_test('Client-Hints not sent when Accept-CH header is present only in subresource');
  10         var body = document.body;
  11         var unreached = function() {
  12             assert_unreached("Image should not have loaded.");
  13         };
  14
  15         var loadRWImage = function() {
  16             var img = new Image();
  17             img.src = 'resources/image-checks-for-width.php';
  18             img.onload = t.step_func(unreached);
  19             img.onerror = t.step_func(function(){ t.done(); });
  20             body.appendChild(img);
  21         };
  22         t.step(function() {
  23             var img = new Image();
  24             img.src = 'resources/image-checks-for-dpr.php';
  25             img.onload = t.step_func(unreached);
  26             img.onerror = t.step_func(loadRWImage);
  27             body.appendChild(img);
  28         });
  29     </script>
  30 </body>