How to add Rolify fixtures with scope

I'm trying to implement the Rolify gem and have trouble adding fixtures, especially because the role is scoped to a single organization. The (model) test below fails as @user.has_role?('moderator') is false. Any idea what I'm doing wrong? The test:

def setup
  @user           = users(:one)
  @organization1  = organizations(:one)
  @moderator_role = roles(:first_organization_moderator_role)
end

test "should be moderator if fixtures correct" do 
  assert_equal @user.has_role?('moderator'), true
end

roles.yml

first_organization_moderator_role:
  name: :organization_moderator
  resource_id: 1
  resource_type: 'Organization'

In users.yml to an existing user which is related to organization one I added the roles line (I'm undertain how to set its scope to be only moderator for organization one):

one:
  organization: one
  email: orgone@example.com
  username: myster1
  activated: true
  roles: organization_moderator, organization(:one)   #I also tried ", organization_id(:one)". The idea here is to set the scope of the role.

In organizations.yml there is an organization named one.