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-rw-r--r--js/xpconnect/tests/unit/test_bug780370.js23
1 files changed, 23 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_bug780370.js b/js/xpconnect/tests/unit/test_bug780370.js
new file mode 100644
index 000000000..40d6f9748
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_bug780370.js
@@ -0,0 +1,23 @@
+/* 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/. */
+
+/* See https://bugzilla.mozilla.org/show_bug.cgi?id=780370 */
+
+const Cu = Components.utils;
+
+// Use a COW to expose a function from a standard prototype, and make we deny
+// access to it.
+
+function run_test()
+{
+ var sb = Cu.Sandbox("http://www.example.com");
+ sb.obj = { foo: 42, __exposedProps__: { hasOwnProperty: 'r' } };
+ do_check_eq(Cu.evalInSandbox('typeof obj.foo', sb), 'undefined', "COW works as expected");
+ try {
+ Cu.evalInSandbox('obj.hasOwnProperty', sb);
+ do_check_true(false);
+ } catch (e) {
+ do_check_true(/privileged or cross-origin callable/i.test(e));
+ }
+}