I was trying to upgrade from Rails 4.0 to Rails 4.1. Some specs broke, and I found a small behaviour change.

So my user has_one profile.

user.association(:profile).loaded? # false
FactoryGirl.create(:profile, user: user)
user.association(:profile).loaded? # false

Prior to my upgrade, the profile association will not be loaded before/after FactoryGirl.create call.

However after Rails 4.1

user.association(:profile).loaded? # false
FactoryGirl.create(:profile, user: user)
user.association(:profile).loaded? # true

This means I have to be careful to not have stale profile in tests, calling reload more often.

P.S. my factory_girl gem has remain unchanged in version 4.4.0 and factory_girl_rails gem in 4.4.1. So this is solely due to Rails behavior change.