public void ConvertListOfPrescritionAToListOfPrescriptionB() { // Arrange var listOfPrescriptionA = GenerateData.ListPrescriptionA(); // Act var listOfPrescriptionB = listOfPrescriptionA.ConverteToListOfPrescriptionB(); // Assert listOfPrescriptionB.Should() .NotBeEmpty() .And .ContainInOrder() .And .ContainItemsAssignableTo <PrescriptionB>(); }