test: Improve some tests

spec/rails_helper.rb

@@ -1,12 +1,14 @@
 # frozen_string_literal: true
 
-require_relative 'spec_helper'
+require 'super_diff/rspec'
 
 require 'zeitwerk'
 loader = Zeitwerk::Loader.new
 loader.push_dir("#{__dir__}/page_objects")
 loader.setup
 
+require_relative 'spec_helper'
+
 ENV['RAILS_ENV'] = 'test'
 
 require 'simplecov'
@@ -21,8 +23,6 @@ require 'capybara/rails'
 
 Dir[File.expand_path('support/**/*.rb', __dir__)].each { |f| require_relative f }
 
-# Checks for pending migrations and applies them before tests are run.
-# If you are not using ActiveRecord, you can remove these lines.
 begin
   ActiveRecord::Migration.maintain_test_schema!
 rescue ActiveRecord::PendingMigrationError => e