Let's add a line here: `render_views`. This will cause the controller spec to actually render the view file, meaning obvious errors will be surfaced (such as `link to`, mentioned in another comment here).

This will now look like:

```ruby
describe ArticlesController do
  render_views

  # everything else here
```

After you make this change, run your specs. If you haven't yet fixed the `link to` error, you should now see the specs fail.