dom/bindings/test/test_treat_non_object_as_null.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=952365
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug 952365</title>
   9   <script src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  11   <script type="application/javascript">
  12
  13   /** Test for Bug 952365 **/
  14
  15     var onvolumechange;
  16     var x = {};
  17
  18     (function() {
  19        onvolumechange = x;
  20        is(onvolumechange, x,
  21           "Should preserve an object value when assigning to event handler");
  22        // Test that we don't try to actually call the non-callable object
  23        window.dispatchEvent(new Event("volumechange"));
  24        onvolumechange = 5;
  25        is(onvolumechange, null,
  26           "Non-object values should become null when assigning to event handler");
  27     })();
  28   </script>
  29 </head>
  30 <body>
  31 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=952365">Mozilla Bug 952365</a>
  32 <p id="display"></p>
  33 <div id="content" style="display: none">
  34
  35 </div>
  36 <pre id="test">
  37 </pre>
  38 </body>
  39 </html>