test($route): ensure mock $sce delegate is implemented correctly

The mock calls to `valueOf(v)` and `getTrustedResourceUrl(v)` were not dealing
with the case where `v` was null.

Author: petebacondarwin

test/ngRoute/routeSpec.js

@@ -1028,9 +1028,10 @@ describe('$route', function() {
       $routeProvider = _$routeProvider_;
 
       $provide.decorator('$sce', function($delegate) {
+        function getVal(v) { return v.getVal ? v.getVal() : v; }
         $delegate.trustAsResourceUrl = function(url) { return new MySafeResourceUrl(url); };
-        $delegate.getTrustedResourceUrl = function(v) { return v.getVal(); };
-        $delegate.valueOf = function(v) { return v.getVal(); };
+        $delegate.getTrustedResourceUrl = function(v) { return getVal(v); };
+        $delegate.valueOf = function(v) { return getVal(v); };
         return $delegate;
       });
     });