class AdminsGroupMailerPreview < ActionMailer::Preview def notify_added_admins_group_managers admins_group = AdminsGroup.new(name: 'un groupe d\'admin') current_super_admin_email = 'admin@dgfip.com' admins_group_managers = [AdminsGroupManager.new(user: user)] AdminsGroupMailer.notify_added_admins_group_managers(admins_group, admins_group_managers, current_super_admin_email) end private def user User.new(id: 10, email: 'test@exemple.fr') end end