public async Task ValidationMappingStewardess_when_validate_pilot_OK_then_map() { var validator = new StewardessDTOValidator(); StewardessDTO correct = new StewardessDTO() { Id = 1, Surname = "sur" }; StewardessDTO incorrect = new StewardessDTO() { Id = 2, Name = "name" }; bool correctRes = validator.Validate(correct).IsValid; Assert.True(correctRes); var mapped = _mapper.Map <StewardessDTO, Stewardess>(correct); if (correctRes) { await _service.Post(mapped); } bool incorrectRes = validator.Validate(incorrect).IsValid; Assert.False(incorrectRes); var mappedIncorrect = _mapper.Map <StewardessDTO, Stewardess>(incorrect); if (incorrectRes) { await _service.Post(mapped); } }