public void InvitationUsesCityInInvitationText()
        {
            var invitation = new Invitation()
            {
                UserName = "******", City = "testcity", Room = "testroom"
            };
            var message = invitation.CreateNewInvitationMessage("botroom");


            StringAssert.Contains("colleagues in " + invitation.City, message.Text);
            StringAssert.Contains("colleagues from #" + invitation.Room, message.Text);

            Console.WriteLine(message.Text);
        }