ruby on rails - rails - ¿Cómo realizar correctamente las pruebas de modelo con ActiveStorage en los carriles?

rails active storage image

Question

Acabo de cambiar a usar ActiveStorage en los rieles 5.1.4 y soy nuevo en TDD y me has_one_attached :avatar averiguar cómo probar un modelo que has_one_attached :avatar

require ''rails_helper''

RSpec.describe User, :type => :model do

  let (:valid_user) { FactoryBot.build(:user) }
  describe "Upload avatar" do
    context "with a valid image" do      
      it "saves the image" do
        valid_user.save!        
        saved_file = valid_user.avatar.attach(io: File.open("/home/ubuntu/workspace/spec/fixtures/files/avatar.jpg"), filename: "face.jpg", content_type: "image/jpg")
        expect(saved_file).to be_an_instance_of(ActiveStorage::Attachment::One)
      end
    end
  end 

end

Pero estoy recibiendo el siguiente error:

Failures:

  1) User Upload avatar with a valid image saves the image
     Failure/Error:
       saved_file = valid_user.avatar.attach(io: File.open("/home/ubuntu/workspace/spec/fixtures/files/avatar.jpg"), filename: "face.jpg", 
                                             content_type: "image/jpg")


 NoMethodError:
   undefined method `upload'' for nil:NilClass
   Did you mean?  load
 # /usr/local/rvm/gems/ruby-2.3.4/gems/activestorage-0.1/lib/active_storage/blob.rb:48:in `upload''
 # /usr/local/rvm/gems/ruby-2.3.4/gems/activestorage-0.1/lib/active_storage/blob.rb:21:in `block in build_after_upload''
 # /usr/local/rvm/gems/ruby-2.3.4/gems/activestorage-0.1/lib/active_storage/blob.rb:16:in `tap''
 # /usr/local/rvm/gems/ruby-2.3.4/gems/activestorage-0.1/lib/active_storage/blob.rb:16:in `build_after_upload''
 # /usr/local/rvm/gems/ruby-2.3.4/gems/activestorage-0.1/lib/active_storage/blob.rb:26:in `create_after_upload!''
 # /usr/local/rvm/gems/ruby-2.3.4/gems/activestorage-0.1/lib/active_storage/attached.rb:25:in `create_blob_from''
 # /usr/local/rvm/gems/ruby-2.3.4/gems/activestorage-0.1/lib/active_storage/attached/one.rb:9:in `attach''
 # ./spec/models/user_spec.rb:47:in `block (4 levels) in <top (required)>''

¿Alguna pista?

Answer 1

En config / environment / test.rb

config.active_storage.service = :test

En su especificación

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

Answer 2

Problema resuelto. Después de rastrear el error al método de carga ActiveStorage :: Blob ::, donde decía: Uploads the io to the service on the key for this blob. Me di cuenta de que no había configurado el servicio de almacenamiento activo para el entorno de prueba. En pocas palabras, simplemente añada:

config.active_storage.service = :test

Al archivo config / environment / test.rb

Answer 3

Resolví usando

FactoryBot.define do
  factory :culture do
    name ''Soy''
    after(:build) do |culture|
      culture.image.attach(io: File.open(Rails.root.join(''spec'', ''factories'', ''images'', ''soy.jpeg'')), filename: ''soy.jpeg'', content_type: ''image/jpeg'')
    end
  end
end

Después

describe ''#image'' do
  subject { create(:culture).image }

  it { is_expected.to be_an_instance_of(ActiveStorage::Attached::One) }
end