Path to assets folder, from RSpec test - ruby-on-rails

Question

I am trying to test a carrierwave image upload to a model, using RSpec / capybara / Factory girl for Rails.
This specific test tests the validation that an image should be present.
At the moment, I have this code:
it "should accept a spotlight record with spotlight info" do
feature = create :feature, spotlight: true, spotlight_description: "description", spotlight_image: File.open(Rails.root.join "/app/assets/shopstar_logo_stamp.png")
expect(feature).to be_valid
end
But somehow the image isn't detected, and I get this error:
Failures:
1) Feature validations should accept a spotlight record with spotlight info
Failure/Error: feature = create :feature, spotlight: true, spotlight_description: "description", spotlight_image: File.open(Rails.root.join "/app/assets/shopstar_logo_stamp.png")
Errno::ENOENT:
No such file or directory - /app/assets/shopstar_logo_stamp.png
# ./spec/models/feature_spec.rb:32:in `initialize'
# ./spec/models/feature_spec.rb:32:in `open'
# ./spec/models/feature_spec.rb:32:in `block (3 levels) in <top (required)>'
How can I specify a path to an image in assets and use it for testing?
Or alternatively, what is a better way of testing a carrierwave image upload?

Answer 1

If this is an acceptance test/integration test you'll actually want to do it from the users perspective using capybara like this:
feature 'user uploads image' do
scenario '#Image' do
count = ImageModel.count
visit new_image_path
attach_file('css_selector_here', File.join(Rails.root, '/spec/support/herst.jpg'))
click_button('Submit')
expect(page).to have_content('Image uploaded successfully!')
expect(ImageModel.count).to eq(count + 1)
end
end
If you're after a unit test, do something like this with FactoryGirl in spec/factories/factory.rb
Factory.define :feature do |f|
f.spotlight true
f.spotlight_description "description"
f.spotlight_image { Rack::Test::UploadedFile.new(File.join(Rails.root, 'spec', 'support', 'feature', 'images', 'shopstar_logo_stamp.jpg')) }
end
now in your unit test you can run your test:
it "should accept a spotlight record with spotlight info" do
feature = create :feature
expect(feature).to be_valid
end