test: minor test suite improvements

Author: Mattia Roccoberton

lib/active_storage/service/db_service.rb

@@ -8,13 +8,15 @@ module ActiveStorage
   # Wraps a DB table as an Active Storage service. See ActiveStorage::Service
   # for the generic API documentation that applies to all services.
   class Service::DBService < Service
+    # :nocov:
     if Rails::VERSION::MAJOR >= 7
       include ActiveStorage::DBServiceRails70
     elsif Rails::VERSION::MAJOR == 6 && Rails::VERSION::MINOR == 1
       include ActiveStorage::DBServiceRails61
     else
       include ActiveStorage::DBServiceRails60
     end
+    # :nocov:
 
     def initialize(public: false, **)
       @chunk_size = ENV.fetch('ASDB_CHUNK_SIZE') { 1.megabytes }

spec/rails_helper.rb

@@ -16,14 +16,17 @@
 
 SimpleCov.start :rails do
   filters.clear
+
+  enable_coverage :branch
+
   add_filter %r{^/lib/active_storage_db/version.rb}
   add_filter %r{^/spec/}
   add_filter %r{^/vendor/}
 
   case ENV.fetch('RAILS', nil)
-  when '6.0' then add_filter /_rails61|_rails70/
-  when '6.1' then add_filter /_rails60|_rails70/
-  when '7.0' then add_filter /_rails60|_rails61/
+  when '6.1' then add_filter /_rails70|_rails71/
+  when '7.0' then add_filter /_rails61|_rails71/
+  when '7.1' then add_filter /_rails61|_rails70/
   end
 end
 

spec/spec_helper.rb

@@ -1,6 +1,11 @@
 # frozen_string_literal: true
 
 RSpec.configure do |config|
+  config.color = true
+  config.default_formatter = :documentation
+  config.tty = true
+  config.order = :random
+
   config.expect_with :rspec do |expectations|
     expectations.include_chain_clauses_in_custom_matcher_descriptions = true
   end