Register some built in Ember Data objects if ED exists on the page.

This will make it easier to test serializers without having to know
about the transform's Ember Data registers under the hood.

lib/ember-test-helpers/isolated-container.js

@@ -66,6 +66,18 @@ export default function isolatedContainer(fullNames) {
   container.register('view:select', Ember.Select);
   container.register('route:basic', Ember.Route, { instantiate: false });
 
+  var global = typeof global === 'object' && global || window;
+  if (global.DS) {
+    var DS = global.DS;
+    registry.register('transform:boolean', DS.BooleanTransform);
+    registry.register('transform:date', DS.DateTransform);
+    registry.register('transform:number', DS.NumberTransform);
+    registry.register('transform:string', DS.StringTransform);
+    registry.register('serializer:-default', DS.JSONSerializer);
+    registry.register('serializer:-rest', DS.RESTSerializer);
+    registry.register('adapter:-rest', DS.RESTAdapter);
+  }
+
   for (var i = fullNames.length; i > 0; i--) {
     var fullName = fullNames[i - 1];
     var normalizedFullName = resolver.normalize(fullName);