# File lib/action_mailer/test_helper.rb, line 25 def assert_emails(number) if block_given? original_count = ActionMailer::Base.deliveries.size yield new_count = ActionMailer::Base.deliveries.size assert_equal original_count + number, new_count, "#{number} emails expected, but #{new_count - original_count} were sent" else assert_equal number, ActionMailer::Base.deliveries.size end end