Remove ManagerInvitationJob

app/controllers/admin/manager_invitations_controller.rb

@@ -35,7 +35,7 @@ module Admin
       new_user.save!
 
       @enterprise.users << new_user
-      ManagerInvitationJob.perform_later(@enterprise.id, new_user.id)
+      EnterpriseMailer.manager_invitation(@enterprise, new_user).deliver_later
 
       new_user
     end

app/jobs/manager_invitation_job.rb

@@ -1,9 +0,0 @@
-# frozen_string_literal: true
-
-class ManagerInvitationJob < ActiveJob::Base
-  def perform(enterprise_id, user_id)
-    enterprise = Enterprise.find enterprise_id
-    user = Spree::User.find user_id
-    EnterpriseMailer.manager_invitation(enterprise, user).deliver_now
-  end
-end

spec/controllers/admin/manager_invitations_controller_spec.rb

@@ -28,16 +28,17 @@ module Admin
       end
 
       context "signing up a new user" do
-        let(:manager_invitation) { instance_double(ManagerInvitationJob) }
+        let(:mail_mock) { double(:mailer, deliver_later: true) }
 
         before do
-          setup_email
+          allow(EnterpriseMailer).to receive(:manager_invitation).
+            with(enterprise, kind_of(Spree::User)) { mail_mock }
+
           allow(controller).to receive_messages spree_current_user: admin
         end
 
         it 'enqueues an invitation email' do
-          expect(ManagerInvitationJob)
-            .to receive(:perform_later).with(enterprise.id, kind_of(Integer))
+          expect(mail_mock).to receive(:deliver_later)
 
           spree_post :create, email: 'un.registered@email.com', enterprise_id: enterprise.id
         end