diff -r 000000000000 -r 6474c204b198 toolkit/devtools/server/tests/unit/test_functiongrips-01.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/devtools/server/tests/unit/test_functiongrips-01.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,95 @@
+/* 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_named_function();
+    });
+  });
+  do_test_pending();
+}
+
+function test_named_function()
+{
+  gThreadClient.addOneTimeListener("paused", function(aEvent, aPacket) {
+    let args = aPacket.frame.arguments;
+
+    do_check_eq(args[0].class, "Function");
+    do_check_eq(args[0].name, "stopMe");
+    do_check_eq(args[0].displayName, "stopMe");
+
+    let objClient = gThreadClient.pauseGrip(args[0]);
+    objClient.getParameterNames(function(aResponse) {
+      do_check_eq(aResponse.parameterNames.length, 1);
+      do_check_eq(aResponse.parameterNames[0], "arg1");
+
+      gThreadClient.resume(test_inferred_name_function);
+    });
+
+  });
+
+  gDebuggee.eval("stopMe(stopMe)");
+}
+
+function test_inferred_name_function() {
+  gThreadClient.addOneTimeListener("paused", function(aEvent, aPacket) {
+    let args = aPacket.frame.arguments;
+
+    do_check_eq(args[0].class, "Function");
+    // No name for an anonymous function, but it should have an inferred name.
+    do_check_eq(args[0].name, undefined);
+    do_check_eq(args[0].displayName, "o.m");
+
+    let objClient = gThreadClient.pauseGrip(args[0]);
+    objClient.getParameterNames(function(aResponse) {
+      do_check_eq(aResponse.parameterNames.length, 3);
+      do_check_eq(aResponse.parameterNames[0], "foo");
+      do_check_eq(aResponse.parameterNames[1], "bar");
+      do_check_eq(aResponse.parameterNames[2], "baz");
+
+      gThreadClient.resume(test_anonymous_function);
+    });
+  });
+
+  gDebuggee.eval("var o = { m: function(foo, bar, baz) { } }; stopMe(o.m)");
+}
+
+function test_anonymous_function() {
+  gThreadClient.addOneTimeListener("paused", function(aEvent, aPacket) {
+    let args = aPacket.frame.arguments;
+
+    do_check_eq(args[0].class, "Function");
+    // No name for an anonymous function, and no inferred name, either.
+    do_check_eq(args[0].name, undefined);
+    do_check_eq(args[0].displayName, undefined);
+
+    let objClient = gThreadClient.pauseGrip(args[0]);
+    objClient.getParameterNames(function(aResponse) {
+      do_check_eq(aResponse.parameterNames.length, 3);
+      do_check_eq(aResponse.parameterNames[0], "foo");
+      do_check_eq(aResponse.parameterNames[1], "bar");
+      do_check_eq(aResponse.parameterNames[2], "baz");
+
+      gThreadClient.resume(function() {
+        finishClient(gClient);
+      });
+    });
+  });
+
+  gDebuggee.eval("stopMe(function(foo, bar, baz) { })");
+}
+