public async Task ValidationMappingPlaneType_when_validate_pilot_OK_then_map() { var validator = new PlaneTypeDTOValidator(); PlaneTypeDTO correct = new PlaneTypeDTO() { Id = 1, Model = "Model" }; PlaneTypeDTO incorrect = new PlaneTypeDTO() { Id = 2, NumberOfSeats = 25 }; bool correctRes = validator.Validate(correct).IsValid; Assert.True(correctRes); var mapped = _mapper.Map <PlaneTypeDTO, PlaneType>(correct); if (correctRes) { await _service.Post(mapped); } bool incorrectRes = validator.Validate(incorrect).IsValid; Assert.False(incorrectRes); var mappedIncorrect = _mapper.Map <PlaneTypeDTO, PlaneType>(incorrect); if (incorrectRes) { await _service.Post(mapped); } }