public async Task Import_Success() { var dtos = new List <ResponseDto> { new ResponseDto { Body = "content", Method = "GET", Route = "/route1", StatusCode = 200 }, new ResponseDto { Body = "content", Method = "GET", Route = "/route2", StatusCode = 200 } }; var result = (await _controller.Import(dtos)).Result as OkObjectResult; var resultValue = result.Value as ResponseImportResult; resultValue.Message.Should().Be("Import successful"); }