public async Task ThrowApplicationException_WhenTeamsIsNull()
        {
            // Arrange
            Mock <ITeamService> teamServiceMock = new Mock <ITeamService>();
            Mock <IPDFService>  pDFServiceMock  = new Mock <IPDFService>();
            Mock <IMemoryCache> memoryCacheMock = new Mock <IMemoryCache>();

            string validSortOrder  = string.Empty;
            string validFilter     = string.Empty;
            int    validPageNumber = 1;
            int    validPageSize   = 10;

            IPagedList <Team> teams = null;

            teamServiceMock.Setup(mock => mock.FilterTeamsAsync(validSortOrder, validFilter, validPageNumber, validPageSize))
            .Returns(Task.FromResult(teams));

            TeamController SUT = new TeamController(
                teamServiceMock.Object,
                pDFServiceMock.Object,
                memoryCacheMock.Object);

            // Act & Assert
            await Assert.ThrowsExceptionAsync <ApplicationException>(() =>
                                                                     SUT.Download(validSortOrder, validFilter, validPageNumber, validPageSize));
        }
        public async Task CallFilterTeamsAsync_WhenCalled()
        {
            // Arrange
            Mock <ITeamService> teamServiceMock = new Mock <ITeamService>();
            Mock <IPDFService>  pDFServiceMock  = new Mock <IPDFService>();
            Mock <IMemoryCache> memoryCacheMock = new Mock <IMemoryCache>();

            IList <string> validFileParameters = typeof(TeamDownloadViewModel).GetProperties().Select(p => p.Name.ToString()).ToList();
            string         validCollection     = "teams";

            string validSortOrder  = string.Empty;
            string validFilter     = string.Empty;
            int    validPageNumber = 1;
            int    validPageSize   = 10;

            string validFileName = string.Empty;

            byte[] validFileBytes = new byte[0];

            IPagedList <Team> teams = new PagedList <Team>(
                new List <Team>().AsQueryable(),
                validPageNumber,
                validPageSize);

            IPagedList <TeamDownloadViewModel> teamDownloadViewModels = new PagedList <TeamDownloadViewModel>(
                new List <TeamDownloadViewModel>().AsQueryable(),
                validPageNumber,
                validPageSize);

            teamServiceMock.Setup(mock => mock.FilterTeamsAsync(validSortOrder, validFilter, validPageNumber, validPageSize))
            .Returns(Task.FromResult(teams));

            pDFServiceMock
            .Setup(mock => mock.CreatePDF(teamDownloadViewModels, validFileParameters, validCollection))
            .Returns(validFileName);

            pDFServiceMock
            .Setup(mock => mock.GetFileBytesAsync(validFileName))
            .Returns(Task.FromResult(validFileBytes));

            pDFServiceMock
            .Setup(mock => mock.DeleteFile(validFileName));

            TeamController SUT = new TeamController(
                teamServiceMock.Object,
                pDFServiceMock.Object,
                memoryCacheMock.Object);

            // Act
            await SUT.Download(validSortOrder, validFilter, validPageNumber, validPageSize);

            // Assert
            teamServiceMock.Verify(mock =>
                                   mock.FilterTeamsAsync(validSortOrder, validFilter, validPageNumber, validPageSize),
                                   Times.Once);
        }