js/xpconnect/tests/mochitest/test_bug960820.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=960820
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug 960820</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 exception stacks crossing **/
  14
  15   // Synchronous event dispatch creates a new script entry point. At the time
  16   // of this writing, an event listener defined in a Sandbox will cause the
  17   // SafeJSContext to be pushed to the cx stack, which differs from the JSContext
  18   // associated with this DOM window. So we test both kinds of boundaries.
  19   var sb = new SpecialPowers.Cu.Sandbox(SpecialPowers.Services.scriptSecurityManager.getSystemPrincipal());
  20   sb.win = window;
  21   SpecialPowers.Cu.evalInSandbox("win.document.addEventListener('click', " +
  22                                  "function clickHandler() { win.wrappedJSObject.clickCallback(); });", sb);
  23   function clickCallback() {
  24     var stack = (new Error()).stack;
  25     ok(true, "Invoked clickCallback. Stack: " + stack);
  26     ok(/clickCallback/.test(stack), "clickCallback should be in the stack");
  27     ok(!/clickHandler/.test(stack), "clickHandler should not be in the stack");
  28     ok(/dispatchClick/.test(stack), "dispatchClick should be in the stack");
  29
  30     // Check Components.stack, but first filter through the SpecialPowers junk.
  31     var stack = SpecialPowers.wrap(SpecialPowers.Components).stack;
  32     while (/testing-common/.test(stack)) {
  33       stack = stack.caller;
  34     }
  35     ok(/clickCallback/.test(stack), "clickCallback should be reachable via Components.stack");
  36     ok(/clickHandler/.test(stack.caller), "clickHandler should be reachable via Components.stack");
  37     ok(/dispatchClick/.test(stack.caller.caller), "dispatchClick hould be reachable via Components.stack");
  38   }
  39   function dispatchClick() {
  40     document.dispatchEvent(new MouseEvent('click'));
  41   }
  42   dispatchClick();
  43
  44
  45   </script>
  46 </head>
  47 <body>
  48 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=960820">Mozilla Bug 960820</a>
  49 <p id="display"></p>
  50 <div id="content" style="display: none">
  51
  52 </div>
  53 <pre id="test">
  54 </pre>
  55 </body>
  56 </html>