public async void GetMarkSessionById_NotFoundStatusCode_ThrowsException()
        {
            // Arrange
            var httpService         = new Mock <IHttpService>();
            var httpResponseMessage = new HttpResponseMessage
            {
                StatusCode = HttpStatusCode.NotFound
            };

            httpService
            .Setup(m => m.GetAsync(It.IsAny <string>()))
            .ReturnsAsync(httpResponseMessage);
            var       markingServiceClient = new MarkingServiceClient(httpService.Object);
            Exception exception            = null;

            try
            {
                // Act
                await markingServiceClient.GetMarkSessionById(It.IsAny <string>());
            }
            catch (MarkSessionDoesNotExistException e)
            {
                exception = e;
            }

            // Assert
            Assert.NotNull(exception);
        }
        public async void GetMarkSessionById_ValidMarkSessionId_ReturnsMarkSessionModel()
        {
            // Arrange
            var markSessionId        = "5b07decf7aa54a0007b3db51";
            var httpService          = new HttpService(new HttpClient());
            var markingServiceClient = new MarkingServiceClient(httpService);

            // Act
            var result = await markingServiceClient.GetMarkSessionById(markSessionId);

            // Assert
            Assert.NotNull(result);
        }
        public async void GetMarkSessionById_OkStatusCode_ReturnsModel()
        {
            // Arrange
            var httpService         = new Mock <IHttpService>();
            var httpResponseMessage = new HttpResponseMessage
            {
                StatusCode = HttpStatusCode.OK,
                Content    = new StringContent(MarkSessionModelDataMocks.MockMarkSessionModelJson)
            };

            httpService
            .Setup(m => m.GetAsync(It.IsAny <string>()))
            .ReturnsAsync(httpResponseMessage);
            var markingServiceClient = new MarkingServiceClient(httpService.Object);

            // Act
            var markSessionModel = await markingServiceClient.GetMarkSessionById(It.IsAny <string>());

            // Assert
            Assert.NotNull(markSessionModel);
        }