feat(articles): Simple test enhancement (#1659)

* feat(articles): Simple test enhancement

Simple test enhancement proposed by @jrodenbostel.  Eases troubleshooting when Article save fails during test execution.

Further reference here: meanjs/generator-meanjs#257

Fixes #1658

* updated per @simison's request

Author: jrodenbostel

modules/articles/tests/server/article.server.routes.tests.js

@@ -308,7 +308,10 @@ describe('Article CRUD tests', function () {
     var articleObj = new Article(article);
 
     // Save the article
-    articleObj.save(function () {
+    articleObj.save(function (err) {
+      if (err) {
+        return done(err);
+      }
       request(app).get('/api/articles/' + articleObj._id)
         .end(function (req, res) {
           // Set assertion