How to properly do model testing with ActiveStorage in rails?

Question

I have just switched to using ActiveStorage on rails 5.1.4 and I am new to TDD and struggling to figure out how to test a model that has_one_attached :avatar

Answer 1

In config/environments/test.rb

config.active_storage.service = :test

In your spec

it {expect(valid_user.avatar).to be_attached}