Using the `file` method I mentioned earlier can help to clean up these specs - I don't think its a good idea to `stub` the object in test (`template`, in this case). Maybe we can rewrite this example to be a bit shorter like this:

```ruby
source = '@import "nib"'
template = Stylus::ImportProcessor.new('not-stylus.scss') { source }
context = double

expect(context).to_not receive(:depend_on)
template.render(context)
```