I’m definitely not done, but my intent has been to clarify the problem and therefore the solution for myself, perhaps it will help you as well.
Let me know if it helps or if you have questions(or suggestions). So far, the tests are minimal but my goal is to expand those and find a working solution to rapid feedback with tdd in ember.
Cheers
PS: I should note that my example does not use rails at all, which perhaps means I misunderstood the question. Nonetheless, I’ll leave my reply.