diff --git a/platform/framework/test/register/CustomRegistrarsSpec.js b/platform/framework/test/register/CustomRegistrarsSpec.js
index 07ee822a7d..a5c6c7873f 100644
--- a/platform/framework/test/register/CustomRegistrarsSpec.js
+++ b/platform/framework/test/register/CustomRegistrarsSpec.js
@@ -4,12 +4,118 @@
  * CustomRegistrarsSpec. Created by vwoeltje on 11/6/14.
  */
 define(
-    [],
-    function () {
+    ["../../src/register/CustomRegistrars"],
+    function (CustomRegistrars) {
         "use strict";
 
-        describe("", function () {
+        describe("Custom registrars", function () {
+            var mockLog,
+                mockApp,
+                customRegistrars;
 
+            // Set up mock test dependencies
+            beforeEach(function () {
+                mockApp = jasmine.createSpyObj("app", [
+                    "controller",
+                    "directive",
+                    "service",
+                    "config"
+                ]);
+
+                mockLog = jasmine.createSpyObj("$log", [
+                    "error",
+                    "warn",
+                    "info",
+                    "debug"
+                ]);
+
+                customRegistrars = new CustomRegistrars(mockApp, mockLog);
+            });
+
+            it("has custom registrars for Angular built-ins", function () {
+                expect(customRegistrars.directives).toBeTruthy();
+                expect(customRegistrars.controllers).toBeTruthy();
+                expect(customRegistrars.services).toBeTruthy();
+                expect(customRegistrars.routes).toBeTruthy();
+            });
+
+            it("invokes built-in functions on the app", function () {
+                // Verify preconditions, invoke, expect to have been called
+                expect(mockApp.directive.calls.length).toEqual(0);
+                customRegistrars.directives([{ key: "a" }, { key: "b" }, { key: "c" }]);
+                expect(mockApp.directive.calls.length).toEqual(3);
+
+                expect(mockApp.controller.calls.length).toEqual(0);
+                customRegistrars.controllers([{ key: "a" }, { key: "b" }, { key: "c" }]);
+                expect(mockApp.controller.calls.length).toEqual(3);
+
+                expect(mockApp.service.calls.length).toEqual(0);
+                customRegistrars.services([{ key: "a" }, { key: "b" }, { key: "c" }]);
+                expect(mockApp.service.calls.length).toEqual(3);
+            });
+
+            it("warns when keys are not defined, then skips", function () {
+                // Verify preconditions, invoke, expect to have been called
+                expect(mockApp.directive.calls.length).toEqual(0);
+                customRegistrars.directives([{ key: "a" }, { }, { key: "c" }]);
+                expect(mockApp.directive.calls.length).toEqual(2);
+                expect(mockLog.warn.calls.length).toEqual(1);
+
+                expect(mockApp.controller.calls.length).toEqual(0);
+                customRegistrars.controllers([{ }, { }, { key: "c" }]);
+                expect(mockApp.controller.calls.length).toEqual(1);
+                expect(mockLog.warn.calls.length).toEqual(3);
+
+                expect(mockApp.service.calls.length).toEqual(0);
+                customRegistrars.services([{ }, { }, { }]);
+                expect(mockApp.service.calls.length).toEqual(0);
+                expect(mockLog.warn.calls.length).toEqual(6);
+            });
+
+            it("allows routes to be registered", function () {
+                var mockRouteProvider = jasmine.createSpyObj(
+                        "$routeProvider",
+                        ["when", "otherwise"]
+                    ),
+                    bundle = { path: "test/bundle", resources: "res" },
+                    routes = [
+                        {
+                            when: "foo",
+                            templateUrl: "templates/test.html",
+                            bundle: bundle
+                        },
+                        {
+                            templateUrl: "templates/default.html",
+                            bundle: bundle
+                        }
+                    ],
+                    configCall;
+
+                customRegistrars.routes(routes);
+
+                // Give it the route provider based on its config call
+                mockApp.config.calls.forEach(function (call) {
+                    // Invoke the provided callback
+                    call.args[0][1](mockRouteProvider);
+                });
+
+                // The "when" clause should have been mapped to the when method...
+                expect(mockRouteProvider.when).toHaveBeenCalled();
+                expect(mockRouteProvider.when.mostRecentCall.args[0]).toEqual("foo");
+                expect(mockRouteProvider.when.mostRecentCall.args[1].templateUrl)
+                    .toEqual("test/bundle/res/templates/test.html");
+
+                // ...while the other should have been treated as a default route
+                expect(mockRouteProvider.otherwise).toHaveBeenCalled();
+                expect(mockRouteProvider.otherwise.mostRecentCall.args[0].templateUrl)
+                    .toEqual("test/bundle/res/templates/default.html");
+            });
+
+            it("accepts components for service compositing", function () {
+                // Most relevant code will be exercised in service compositor spec
+                expect(customRegistrars.components).toBeTruthy();
+                customRegistrars.components([]);
+            });
         });
     }
 );
\ No newline at end of file