I'm not sure I even understand what this is really testing. The class it's named after doesn't exist, as far as I know.

You may want to take another stab at writing unit tests rather than keep iterating trying to get this one working.

Basically what we're looking for is that you're adding unit tests to verify the functionality of new classes/extension points you've added and any APIs you've modified.

So for example, I'd expect a QuickFixProcessorsRegistryTest as the most important set of unit tests. For that I'd assume you'd want to test that it lazily loads contributions, and that it properly loads contributions.