public void CombineDemo() { var kundeResult = Kunde.CheckKunde(""); var mailResult = MailAddress.CheckMail(""); var resultCombine = Result.Combine(",", kundeResult, mailResult); resultCombine.Error.Should().Be("ups1,ups2"); var foo = resultCombine.OnSuccess(() => kundeResult); var bar = resultCombine.OnSuccess(() => mailResult); }