Integrate test process with Rspec and Cucumber in a plugin using Desert

Hello, I'm developing some rails plugins with desert, and I would like to use tests with RSpec and Cucumber in the development. RSpec is integrated by default in Desert plugins, but it gives me some bugs. Finally I have created a minimal application which use my plugin, and I try to test it like a normal application without plugin. But I dislike that solution, the plugin lost its modularity, and RSpec still returns me some bugs (he can't find the models/views/controllers located in the plugin...). So has anyone ever tried to test a Desert plugin (or even in a classic plugin) and could get solutions to those matters ?

Are you require'ing all of the files it can't find inside spec_helper? I've never done anything with Desert, but sounds like the files aren't being required.

Some code would help diagnose the issue.