1 files changed, 27 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_bug1244222.js b/js/xpconnect/tests/unit/test_bug1244222.js
new file mode 100644
index 000000000..a5cc39a41
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_bug1244222.js
@@ -0,0 +1,27 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+
+function run_test() {
+  registerAppManifest(do_get_file('../components/js/xpctest.manifest'));
+
+  // Generate a CCW to a function.
+  var sb = new Cu.Sandbox(this);
+  sb.eval('function fun(x) { return x; }');
+  do_check_eq(sb.fun("foo"), "foo");
+
+  // Double-wrap the CCW.
+  var utils = Cc["@mozilla.org/js/xpc/test/js/TestUtils;1"].createInstance(Ci.nsIXPCTestUtils);
+  var doubleWrapped = utils.doubleWrapFunction(sb.fun);
+  do_check_eq(doubleWrapped.echo("foo"), "foo");
+
+  // GC.
+  Cu.forceGC();
+
+  // Make sure it still works.
+  do_check_eq(doubleWrapped.echo("foo"), "foo");
+}