diff -r 000000000000 -r 6474c204b198 toolkit/devtools/server/tests/unit/test_objectgrips-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/server/tests/unit/test_objectgrips-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+var gDebuggee;
+var gClient;
+var gThreadClient;
+
+function run_test()
+{
+  initTestDebuggerServer();
+  gDebuggee = addTestGlobal("test-grips");
+  gDebuggee.eval(function stopMe(arg1) {
+    debugger;
+  }.toString());
+
+  gClient = new DebuggerClient(DebuggerServer.connectPipe());
+  gClient.connect(function() {
+    attachTestTabAndResume(gClient, "test-grips", function(aResponse, aTabClient, aThreadClient) {
+      gThreadClient = aThreadClient;
+      test_object_grip();
+    });
+  });
+  do_test_pending();
+}
+
+function test_object_grip()
+{
+  gThreadClient.addOneTimeListener("paused", function(aEvent, aPacket) {
+    let args = aPacket.frame.arguments;
+
+    do_check_eq(args[0].class, "Object");
+
+    let objClient = gThreadClient.pauseGrip(args[0]);
+    objClient.getOwnPropertyNames(function(aResponse) {
+      do_check_eq(aResponse.ownPropertyNames.length, 3);
+      do_check_eq(aResponse.ownPropertyNames[0], "a");
+      do_check_eq(aResponse.ownPropertyNames[1], "b");
+      do_check_eq(aResponse.ownPropertyNames[2], "c");
+
+      gThreadClient.resume(function() {
+        finishClient(gClient);
+      });
+    });
+
+  });
+
+  gDebuggee.eval("stopMe({ a: 1, b: true, c: 'foo' })");
+}
+