public async Task SetProjectContactAsync(string projectId, SetProjectContactAssociationRequest setProjectContactAssociationRequest)
        {
            if (string.IsNullOrWhiteSpace(projectId))
            {
                throw new ArgumentNullException(nameof(projectId), $"{nameof(projectId)} can not be null, empty or whitespace.");
            }

            if (setProjectContactAssociationRequest == null)
            {
                throw new ArgumentNullException(nameof(setProjectContactAssociationRequest), $"{nameof(setProjectContactAssociationRequest)} can not be null.");
            }

            if (string.IsNullOrWhiteSpace(setProjectContactAssociationRequest.ContactId))
            {
                throw new ArgumentNullException(nameof(setProjectContactAssociationRequest), $"{nameof(setProjectContactAssociationRequest.ContactId)} can not be null, empty or whitespace.");
            }

            var requestRoute = ProjectApiEndpoints.Association.SetContact(projectId);

            var requestString  = JsonConvert.SerializeObject(setProjectContactAssociationRequest, this.jsonSerializerSettings);
            var requestContent = ApiHelpers.GetStringContent(requestString);

            var response = await this.httpClient.PutAsync(requestRoute, requestContent);

            if (!response.IsSuccessStatusCode)
            {
                throw new FactroApiException(
                          $"Could not set contact with id '{setProjectContactAssociationRequest.ContactId}' as contact of project with id '{projectId}'.",
                          response.RequestMessage.RequestUri.ToString(),
                          response.StatusCode,
                          response.Content == null ? null : await response.Content.ReadAsStringAsync());
            }
        }
        public async Task SetProjectContactAsync_InvalidProjectId_ShouldThrowArgumentNullException(string projectId)
        {
            // Arrange
            var companyId = Guid.NewGuid().ToString();
            var setProjectContactAssociationRequest = new SetProjectContactAssociationRequest(companyId);

            var expectedResponse = new HttpResponseMessage();

            var projectApi = this.fixture.GetProjectApi(expectedResponse);

            // Act
            Func <Task> act = async() => await projectApi.SetProjectContactAsync(projectId, setProjectContactAssociationRequest);

            // Assert
            await act.Should().ThrowAsync <ArgumentNullException>();
        }
        public async Task SetProjectContactAsync_NullRequestModelContactId_ShouldThrowArgumentNullException()
        {
            // Arrange
            var existingProject = new GetProjectPayload
            {
                Id = Guid.NewGuid().ToString(),
            };

            var setProjectContactAssociationRequest = new SetProjectContactAssociationRequest(contactId: null);

            var expectedResponse = new HttpResponseMessage();

            var projectApi = this.fixture.GetProjectApi(expectedResponse);

            // Act
            Func <Task> act = async() => await projectApi.SetProjectContactAsync(existingProject.Id, setProjectContactAssociationRequest);

            // Assert
            await act.Should().ThrowAsync <ArgumentNullException>();
        }
        public async Task SetProjectContactAsync_ValidRequest_ShouldReturnVoid()
        {
            // Arrange
            var existingProject = new GetProjectPayload
            {
                Id = Guid.NewGuid().ToString(),
            };

            var companyId = Guid.NewGuid().ToString();
            var setProjectContactAssociationRequest = new SetProjectContactAssociationRequest(companyId);

            var expectedResponse = new HttpResponseMessage();

            var projectApi = this.fixture.GetProjectApi(expectedResponse);

            // Act
            Func <Task> act = async() => await projectApi.SetProjectContactAsync(existingProject.Id, setProjectContactAssociationRequest);

            // Assert
            await act.Should().NotThrowAsync();
        }
        public async Task SetProjectContactAsync_BadRequest_ShouldThrowProjectApiException()
        {
            // Arrange
            var projectId = Guid.NewGuid().ToString();
            var companyId = Guid.NewGuid().ToString();
            var setProjectContactAssociationRequest = new SetProjectContactAssociationRequest(companyId);

            var expectedResponse = new HttpResponseMessage
            {
                StatusCode     = HttpStatusCode.BadRequest,
                RequestMessage = new HttpRequestMessage
                {
                    RequestUri = new Uri("http://www.mock-web-address.com"),
                },
            };

            var projectApi = this.fixture.GetProjectApi(expectedResponse);

            // Act
            Func <Task> act = async() => await projectApi.SetProjectContactAsync(projectId, setProjectContactAssociationRequest);

            // Assert
            await act.Should().ThrowAsync <FactroApiException>();
        }