chromium/third_party/blink/web_tests/external/wpt/FileAPI/FileReader/progress_event_bubbles_cancelable.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>File API Test: Progress Event - bubbles, cancelable</title>
<link rel="author" title="Intel" href="http://www.intel.com">
<link rel="help" href="http://www.w3.org/TR/FileAPI/#events">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
  async_test(function(){
    var blob = new Blob(["TEST"]);
    var reader = new FileReader();

    reader.onloadstart = this.step_func(function(evt) {
      assert_false(evt.bubbles, "The bubbles must be false when the event is dispatched");
      assert_false(evt.cancelable, "The cancelable must be false when the event is dispatched");
    });

    reader.onload = this.step_func(function(evt) {
      assert_false(evt.bubbles, "The bubbles must be false when the event is dispatched");
      assert_false(evt.cancelable, "The cancelable must be false when the event is dispatched");
    });

    reader.onloadend = this.step_func(function(evt) {
      assert_false(evt.bubbles, "The bubbles must be false when the event is dispatched");
      assert_false(evt.cancelable, "The cancelable must be false when the event is dispatched");
      this.done();
    });

    reader.readAsText(blob);
  }, "Check the values of bubbles and cancelable are false when the progress event is dispatched");
</script>