<!doctype html>
<html>
 <head>
  <title>window.onerror - addEventListener</title>
  <script src="../../../../resources/testharness.js"></script>
  <script src="../../../../resources/testharnessreport.js"></script>
 </head>
 <body>
  <div id=log></div>
  <script>
    setup({allow_uncaught_exception:true});
    var t = async_test();
    var ran = false;
    window.addEventListener('error', t.step_func(function(e){
        ran = true;
        assert_true(e.isTrusted, 'isTrusted');
    }), false);
  </script>
 