rails/rails — pull request #17014 by grosser (2014-09-22 20:22:20+00:00)
Title: speed up fixtures by not loading all their classes

this took our time for a test with `tixtures :all` from 28s to 20s

most of the time, only the tables are needed and `fixtures :all` is just a developer saying "I don't know",
so let's save the complexity and overhead!

people that rely on that can do their own requires or use eager loading in test.rb

@rafaelfranca @tenderlove