1 files changed, 9 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_bug677864.js b/js/xpconnect/tests/unit/test_bug677864.js
new file mode 100644
index 0000000000..f92d15fe66
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_bug677864.js
@@ -0,0 +1,9 @@
+function check_cl(iface, desc) {
+    Assert.equal(iface.QueryInterface(Ci.nsIClassInfo).classDescription, desc);
+}
+
+function run_test() {
+    check_cl(Ci, 'XPCComponents_Interfaces');
+    check_cl(Cc, 'XPCComponents_Classes');
+    check_cl(Cr, 'XPCComponents_Results');
+}