FactoryGirl DSL clashing with Rake DSL?

[wilg]

Given the following factory:

FactoryGirl.define do
    factory :release do 
        file { File.new File.join(Rails.root, 'spec', 'fixtures', 'file.txt') }
    end
end

Running rspec generates the following warnings:

WARNING: Global access to Rake DSL methods is deprecated.  Please include
    ...  Rake::DSL into classes and modules which use the Rake DSL methods.
WARNING: DSL method #<FactoryGirl::Declaration::Implicit:0x007fe0488292b0>
#file called at [...]/spec/factories/releases_factory.rb:5:in `block (2 levels) in <top (required)>'

And using the factory fails with:

Trait not registered: class

I'm using this with Rails, and I have a Paperclip attachment called file.

I think this is Rake's DSL conflicting with FactoryGirl's. Clearly Rake's is deprecated, but I don't want to use an old version of rake just to get this to work. Is there a workaround? Or am I missing something?

Someone's reported a similar situation at rubyist/guard-rake#17

[joshuaclayton]

Yeah, it sounds like you're dealing with Rake here, which is a shame. We try to remove as many methods as possible so there are no clashes, but some of the Rake code sneaks in. In instances like this, you'll have to use add_attribute directly:

factory :release do
  add_attribute(:file) do
    File.new #...
  end
end

Let me know how it goes!

[wilg]

Aha, I was looking all over for add_attribute. I had ended up using an after(:build). Thanks!

Also, it sounds like you're saying there's no solution on FactoryGirl's end? I guess there's no way to show Rake the door in this case?

[joshuaclayton]

There's not, sadly; it adds methods to Object; we try as best we can to remove them, but some still slip through. Hooray for monkey-patching core libraries!