diff -r 000000000000 -r 6474c204b198 toolkit/devtools/server/tests/unit/test_framearguments-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/server/tests/unit/test_framearguments-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,51 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Check a frame actor's arguments property.
+ */
+
+var gDebuggee;
+var gClient;
+var gThreadClient;
+
+function run_test()
+{
+  initTestDebuggerServer();
+  gDebuggee = addTestGlobal("test-stack");
+  gClient = new DebuggerClient(DebuggerServer.connectPipe());
+  gClient.connect(function() {
+    attachTestTabAndResume(gClient, "test-stack", function(aResponse, aTabClient, aThreadClient) {
+      gThreadClient = aThreadClient;
+      test_pause_frame();
+    });
+  });
+  do_test_pending();
+}
+
+function test_pause_frame()
+{
+  gThreadClient.addOneTimeListener("paused", function(aEvent, aPacket) {
+    let args = aPacket.frame["arguments"];
+    do_check_eq(args.length, 6);
+    do_check_eq(args[0], 42);
+    do_check_eq(args[1], true);
+    do_check_eq(args[2], "nasu");
+    do_check_eq(args[3].type, "null");
+    do_check_eq(args[4].type, "undefined");
+    do_check_eq(args[5].type, "object");
+    do_check_eq(args[5].class, "Object");
+    do_check_true(!!args[5].actor);
+
+    gThreadClient.resume(function() {
+      finishClient(gClient);
+    });
+  });
+
+  gDebuggee.eval("(" + function() {
+    function stopMe(aNumber, aBool, aString, aNull, aUndefined, aObject) {
+      debugger;
+    };
+    stopMe(42, true, "nasu", null, undefined, { foo: "bar" });
+  } + ")()");
+}