dom/performance/tests/test_performance_paint_observer_helper.html

   1 <!--
   2   Any copyright is dedicated to the Public Domain.
   3   http://creativecommons.org/publicdomain/zero/1.0/
   4 -->
   5 <!DOCTYPE html>
   6 <html>
   7   <body>
   8   </body>
   9   <script>
  10     var promise = new Promise(resolve => {
  11       var observer = new PerformanceObserver(list => resolve(list));
  12       observer.observe({entryTypes: ["paint"]});
  13     });
  14
  15     promise.then(list => {
  16       var perfEntries = list.getEntries();
  17       opener.is(list.getEntries().length, 1);
  18       opener.isDeeply(list.getEntries(),
  19                 performance.getEntriesByType("paint"),
  20                 "Observed 'paint' entries should equal to entries obtained by getEntriesByType.");
  21       opener.isDeeply(list.getEntries({name: "paint"}),
  22                 performance.getEntriesByName("paint"),
  23                 "getEntries with name filter should return correct results.");
  24       opener.isDeeply(list.getEntries({entryType: "paint"}),
  25                 performance.getEntriesByType("paint"),
  26                 "getEntries with entryType filter should return correct results.");
  27       opener.done();
  28     });
  29
  30     const img = document.createElement("IMG");
  31     img.src = "http://example.org/tests/dom/performance/tests/logo.png";
  32     document.body.appendChild(img);
  33
  34   </script>
  35 </html>