Test registration e-mail

test/test_helper.rb

@@ -10,6 +10,7 @@ class ActiveSupport::TestCase
   fixtures :all
 
   include AbstractController::Translation
+  include ActionMailer::TestHelper
 
   def randomize_user_password!(user)
     random_password.tap { |p| user.update!(password: p) }
@@ -22,4 +23,8 @@ class ActiveSupport::TestCase
   def random_email
     "%s@%s.%s" % (1..3).map { SecureRandom.alphanumeric(rand(1..20)) }
   end
+
+  def with_last_email
+    yield(ActionMailer::Base.deliveries.last)
+  end
 end