Adapt the spec

config/initializers/carrierwave.rb

@@ -1,4 +1,5 @@
 CarrierWave.configure do |config|
   config.storage = :file
   config.cache_dir = "#{Rails.root}/tmp/uploads"
+  config.enable_processing = false if Rails.env.test?
 end

spec/factories/sponsors.rb

@@ -5,11 +5,14 @@ FactoryGirl.define do
     name 'Example sponsor'
     website_url 'http://www.example.com'
     description 'Lorem Ipsum Dolor'
-    logo_file_name 'rails.jpg'
-    logo_file_size 2000
-    logo_content_type 'image/jpeg'
-    logo_updated_at DateTime.current
     sponsorship_level
     conference
+
+    after(:create) do |sponsor|
+      uploader = PictureUploader.new(sponsor, :picture)
+      File.open('app/assets/images/rails.png') { |f| uploader.store!(f) }
+      sponsor.logo_file_name = 'rails.png'
+      sponsor.save
+    end
   end
 end

spec/features/lodgings_spec.rb

@@ -16,7 +16,7 @@ feature Lodging do
 
     fill_in 'lodging_name', with: 'New lodging'
     fill_in 'lodging_website_link', with: 'http:\\www.google.com'
-    attach_file 'Photo', path
+    attach_file 'Picture', path
 
     click_button 'Create Lodging'
 
@@ -42,7 +42,7 @@ feature Lodging do
 
     fill_in 'lodging_name', with: 'New lodging'
     fill_in 'lodging_website_link', with: 'http:\\www.google.com'
-    attach_file 'Photo', path
+    attach_file 'Picture', path
 
     click_button 'Update Lodging'
 

spec/features/sponsor_spec.rb

@@ -19,7 +19,7 @@ feature Sponsor do
 
       fill_in 'sponsor_name', with: 'SUSE'
       fill_in 'sponsor_description', with: 'The original provider of the enterprise Linux distribution'
-      attach_file 'Logo', path
+      attach_file 'Picture', path
       fill_in 'sponsor_website_url', with: 'http://www.suse.com'
       select('Platin', from: 'sponsor_sponsorship_level_id')
 

spec/helpers/sponsor_helper_spec.rb

@@ -11,7 +11,7 @@ describe SponsorsHelper, type: :helper do
       end
 
       it 'returns correct url' do
-        expect(get_logo(sponsor)).to match %r{.*(\bfirst/rails.jpg\b)}
+        expect(get_logo(sponsor)).to match %r{.*(\bfirst/rails.png\b)}
       end
     end
 
@@ -22,7 +22,7 @@ describe SponsorsHelper, type: :helper do
       end
 
       it 'returns correct url' do
-        expect(get_logo(sponsor)).to match %r{.*(\bsecond/rails.jpg\b)}
+        expect(get_logo(sponsor)).to match %r{.*(\bsecond/rails.png\b)}
       end
     end
 
@@ -33,7 +33,7 @@ describe SponsorsHelper, type: :helper do
       end
 
       it 'returns correct url' do
-        expect(get_logo(sponsor)).to match %r{.*(\bothers/rails.jpg\b)}
+        expect(get_logo(sponsor)).to match %r{.*(\bothers/rails.png\b)}
       end
     end
   end

spec/serializers/conference_serializer_spec.rb

@@ -16,7 +16,7 @@ describe ConferenceSerializer, type: :serializer do
         description: 'Lorem ipsum dolor sit',
         start_date: '2014-03-04',
         end_date: '2014-03-10',
-        logo: '/logos/original/missing.png',
+        picture_url: nil,
         difficulty_levels:
           [{id: 1,
             title: 'Easy',

spec/views/conference/show.html.haml_spec.rb

@@ -60,7 +60,7 @@ describe 'conference/show.html.haml' do
     expect(rendered).to match(/example@example.com/)
     expect(rendered).to match(/www.example.com/)
     expect(rendered).to match(/Lorem Ipsum Dolor/)
-    expect(rendered).to match(/rails.jpg/)
+    expect(rendered).to match(/rails.png/)
   end
 
   it 'renders social media partial' do