diff -r 000000000000 -r 6474c204b198 js/xpconnect/tests/unit/test_bug805807.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/xpconnect/tests/unit/test_bug805807.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,26 @@
+const Cu = Components.utils;
+function run_test() {
+  var sb = new Cu.Sandbox('http://www.example.com');
+
+  sb.obj = { priv: 42, __exposedProps__ : {} };
+  Object.defineProperty(sb.obj, 'readable', { get: function() { return this.priv; }, set: function(x) { this.priv = x; }} );
+  sb.obj.__exposedProps__.readable = 'r';
+  do_check_eq(Cu.evalInSandbox('Object.getOwnPropertyDescriptor(obj, "readable").get.call(obj)', sb), 42);
+  sb.obj.readable = 32;
+  do_check_eq(Cu.evalInSandbox('Object.getOwnPropertyDescriptor(obj, "readable").get.call(obj);', sb), 32);
+  do_check_eq(Cu.evalInSandbox('Object.__lookupGetter__.call(obj, "readable").call(obj);', sb), 32);
+  Object.getOwnPropertyDescriptor(sb.obj, "readable").set.call(sb.obj, 22);
+  do_check_eq(sb.obj.readable, 22);
+  Object.__lookupSetter__.call(sb.obj, "readable").call(sb.obj, 21);
+  do_check_eq(sb.obj.readable, 21);
+  checkThrows(sb, 'obj.readable = 11;');
+  do_check_eq(Cu.evalInSandbox('Object.getOwnPropertyDescriptor(obj, "readable").set', sb), null);
+  do_check_eq(Cu.evalInSandbox('Object.__lookupSetter__.call(obj, "readable")', sb), null);
+  do_check_eq(sb.obj.readable, 21);
+}
+
+function checkThrows(sb, expression) {
+  var result = Cu.evalInSandbox('(function() { try { ' + expression + ' return "success"; } catch (e) { return e.toString(); } })();', sb);
+  dump("Result: " + result);
+  do_check_true(!!/denied/.exec(result));
+}