public async void TestDetect() { // test no face image IFormFile formFile = CreateFormFile("test-none.jpg"); var result = await _controller.Detect(formFile); var jsonResult = Assert.IsType <JsonResult>(result); List <FaceInfo> faceList = (List <FaceInfo>)jsonResult.Value; Assert.Empty(faceList); // test one face image formFile = CreateFormFile("test-one.jpg"); result = await _controller.Detect(formFile); jsonResult = Assert.IsType <JsonResult>(result); faceList = (List <FaceInfo>)jsonResult.Value; Assert.Single(faceList); // test multi-face image formFile = CreateFormFile("test-three.jpg"); result = await _controller.Detect(formFile); jsonResult = Assert.IsType <JsonResult>(result); faceList = (List <FaceInfo>)jsonResult.Value; Assert.Equal(3, faceList.Count()); }