added post controller test

app/views/posts/partials/common/_secondary_links.html.erb

@@ -5,7 +5,7 @@
     <li>Popular</li>
     <li>Favorites</li>
     <li>Subscriptions</li>
-    <li><%= link_to "Changes", post_histories_path %></li>
+    <li><%= link_to "Changes", post_versions_path %></li>
     <li>Approvals</li>
     <li>Moderate</li>
     <li>Help</li>

app/views/posts/partials/show/_information.html.erb

@@ -10,6 +10,6 @@
       (<%= post.image_width %>x<%= post.image_height %>)
     <% end %>
   </li>
-  <li><%= link_to "Tag History", post_histories_path(:search => {:post_id_eq => post.id}) %></li>
+  <li><%= link_to "Tag History", post_versions_path(:search => {:post_id_eq => post.id}) %></li>
   <li><%= link_to "Note History", note_versions_path(:search => {:post_id_eq => post.id}) %></li>
 </ul>