refactor observers test since email logic moved to service

app/observers/activity_observer.rb

@@ -1,4 +1,4 @@
-class ActivityObserver < ActiveRecord::Observer
+class ActivityObserver < BaseObserver
   observe :issue, :merge_request, :note, :milestone
 
   def after_create(record)

app/observers/base_observer.rb

@@ -1,6 +1,4 @@
 class BaseObserver < ActiveRecord::Observer
-  protected
-
   def notification
     NotificationService.new
   end

app/services/notification_service.rb

@@ -108,4 +108,12 @@ class NotificationService
       Notify.delay.note_commit_email(note.commit_author.id, note.id)
     end
   end
+
+  def new_team_member(users_project)
+    Notify.delay.project_access_granted_email(users_project.id)
+  end
+
+  def update_team_member(users_project)
+    Notify.delay.project_access_granted_email(users_project.id)
+  end
 end