Simplify Active Storage config for test env

app/models/report_blob.rb

@@ -11,7 +11,7 @@ class ReportBlob < ActiveStorage::Blob
       filename:,
       content_type: content_type(filename),
       identify: false,
-      service_name:,
+      service_name: :local,
     )
   end
 
@@ -19,14 +19,6 @@ class ReportBlob < ActiveStorage::Blob
     MIME::Types.of(filename).first&.to_s || "application/octet-stream"
   end
 
-  def self.service_name
-    if Rails.env.test?
-      :test
-    else
-      :local
-    end
-  end
-
   def result
     @result ||= download.force_encoding(Encoding::UTF_8)
   end

config/environments/test.rb

@@ -56,6 +56,4 @@ Openfoodnetwork::Application.configure do
   config.active_support.deprecation = :stderr
 
   config.active_job.queue_adapter = :test
-
-  config.active_storage.service = :test
 end

config/storage.yml

@@ -1,10 +1,6 @@
 local:
   service: Disk
-  root: <%= Rails.root.join("storage") %>
-
-test:
-  service: Disk
-  root: <%= Rails.root.join("tmp/storage") %>
+  root: <%= Rails.root.join(Rails.env.test? ? "tmp/storage" : "storage") %>
 
 test_amazon:
   service: S3