devtools/server/tests/chrome/test_unsafeDereference.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=837723
   5
   6 When we use Debugger.Object.prototype.unsafeDereference to get a non-D.O
   7 reference to a content object in chrome, that reference should be via an
   8 xray wrapper.
   9 -->
  10 <head>
  11   <meta charset="utf-8">
  12   <title>Mozilla Bug 837723</title>
  13   <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
  14   <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
  15 </head>
  16 <body>
  17 <pre id="test">
  18 <script>
  19 "use strict";
  20
  21 const {addDebuggerToGlobal} = ChromeUtils.importESModule("resource://gre/modules/jsdebugger.sys.mjs");
  22 addDebuggerToGlobal(globalThis);
  23
  24 window.onload = function() {
  25   SimpleTest.waitForExplicitFinish();
  26
  27   const iframe = document.createElement("iframe");
  28   iframe.src = "http://mochi.test:8888/chrome/devtools/server/tests/chrome/nonchrome_unsafeDereference.html";
  29
  30   iframe.onload = function() {
  31     const dbg = new Debugger();
  32     const contentDO = dbg.addDebuggee(iframe.contentWindow);
  33     const xhrDesc = contentDO.getOwnPropertyDescriptor("xhr");
  34
  35     isnot(xhrDesc, undefined, "xhr should be visible as property of content global");
  36     isnot(xhrDesc.value, undefined, "xhr should have a value");
  37
  38     const xhr = xhrDesc.value.unsafeDereference();
  39
  40     is(typeof xhr, "object", "we should be able to deference xhr's value's D.O");
  41     is(xhr.timeout, 1742, "chrome should see the xhr's 'timeout' property");
  42     is(xhr.expando, undefined, "chrome should not see the xhr's 'expando' property");
  43
  44     SimpleTest.finish();
  45   };
  46
  47   document.body.appendChild(iframe);
  48 };
  49
  50 </script>
  51 </pre>
  52 </body>
  53 </html>