In development and production, we can access images in the browser. This does not work for the test environment whilst tests are running.
The URL we are using for images is formatted like this:
http://localhost:3000/images/ABC # for development. Port for tests is 3030
: and it redirects to an ActiveStorage attachment service URL - which looks like this:
http://localhost:3000/rails/active_storage/disk/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaEpJaDFTVEd0WlpUbHFlVGh0YW1od1JucEdkMUJuYWxaelNuSUdPZ1pGVkE9PSIsImV4cCI6IjIwMTgtMDYtMDhUMDc6MDM6MDUuNDI2WiIsInB1ciI6ImJsb2Jfa2V5In19--abef581f4df7a19ae1a35a2be03edd028659441f/454.jpg?content_type=image%2Fjpeg&disposition=inline%3B+filename%3D%22454.jpg%22%3B+filename%2A%3DUTF-8%27%27454.jpg
Using byebug (binding.pry like thing) whilst the test is running, we can ascertain things are setup correctly (or are they?):
(byebug) @request.host
"localhost"
(byebug) @request.port
3030
(byebug) File.open("blah.html", 'w'){|file| file.write(response.body)}
1854
(byebug) get(image_source_path(id: 'ABC'))
302
(byebug) response.redirect_url
"http://localhost:3030/rails/active_storage/disk/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaEpJaDEwUWpkVmRFeHJUalV5YUdsYU5XOUdPR0Y2UVZCVFpsb0dPZ1pGVkE9PSIsImV4cCI6IjIwMTgtMDYtMDhUMDc6MjU6NDEuNzkzWiIsInB1ciI6ImJsb2Jfa2V5In19--42f8cd5ca06b07704a6550a19aaa143a6eeb0c6e/pig_admirer.jpg?content_type=image%2Fjpeg&disposition=inline%3B+filename%3D%22pig_admirer.jpg%22%3B+filename%2A%3DUTF-8%27%27pig_admirer.jpg"
(byebug) get(response.redirect_url)
200
(byebug) response.content_length
3618075
: it is indeed returning a ~3.5MiB image. However, when saving a page as HTML ('blah.html' in that sequence), when opening that HTML whilst byebug is running, the images do not load - the calls to ...images/ABC are rejected.
This is a problem because we are using wicked_pdf to generate a PDF, and in the test environment when the PDF is generated it cannot access those images to put into the PDF.
Perhaps the test server can be made to serve responses outside of rspec? Otherwise, there will be no images in the PDF.
Additional notes - config of environment
In the test we added:
before do
host! 'localhost:3030'
end
: though apparently host! is deprecated. And when we tried relocating it to /rails_helper.rb it broke a whole bunch of other tests.
In /config/environments/test.rb we have, amongst other things:
Rails.application.configure do
config.active_storage.service = :test
config.consider_all_requests_local = true
config.action_controller.perform_caching = false
config.host = 'localhost:3030'
config.action_controller.default_url_options = { host: 'localhost:3030' }
config.assets.compile = true
config.allow_concurrency = true
end
Active storage is configured correctly in /config/storage.yml:
test:
service: Disk
root: <%= Rails.root.join("tmp/test_storage") %>
