public async Task CreateVersion_GivenNullCurrentVersion_AssignsDefaultValues()
        {
            //Arrange
            TestVersionItem newVersion = new TestVersionItem();

            ICosmosRepository cosmosRepository = CreateCosmosRepository();

            VersionRepository <TestVersionItem> versionRepository = new VersionRepository <TestVersionItem>(cosmosRepository);

            //Act
            newVersion = await versionRepository.CreateVersion(newVersion);

            //Assert
            newVersion
            .Version
            .Should()
            .Be(1);

            newVersion
            .PublishStatus
            .Should()
            .Be(PublishStatus.Draft);

            newVersion
            .Date
            .Date
            .Should()
            .Be(DateTime.Now.Date.ToLocalTime());
        }
        public async Task CreateVersion_GivenACurrentVersionWithVersion1_SetsNewVersionToThreeAndStatusToUpdated()
        {
            //Arrange
            TestVersionItem newVersion = new TestVersionItem
            {
                SpecificationId = specificationId,
                PublishStatus   = PublishStatus.Approved
            };

            TestVersionItem currentVersion = new TestVersionItem
            {
                SpecificationId = specificationId,
                Version         = 2,
                PublishStatus   = PublishStatus.Approved
            };

            dynamic[] maxNumber = new dynamic[] { 2 };

            ICosmosRepository cosmosRepository = CreateCosmosRepository();

            cosmosRepository
            .DynamicQuery <dynamic>(Arg.Any <SqlQuerySpec>())
            .Returns(maxNumber.AsQueryable());

            VersionRepository <TestVersionItem> versionRepository = new VersionRepository <TestVersionItem>(cosmosRepository);

            //Act
            newVersion = await versionRepository.CreateVersion(newVersion, currentVersion);

            //Assert
            newVersion
            .Version
            .Should()
            .Be(3);

            newVersion
            .PublishStatus
            .Should()
            .Be(PublishStatus.Updated);

            newVersion
            .Date
            .Date
            .Should()
            .Be(DateTime.Now.Date.ToLocalTime());
        }
        public async Task CreateVersion_GivenACurrentVersionIsUpdatedAndGetsApproved_CreatesVersion()
        {
            //Arrange
            TestVersionItem newVersion = new TestVersionItem
            {
                SpecificationId = specificationId,
                PublishStatus   = PublishStatus.Approved
            };

            TestVersionItem currentVersion = new TestVersionItem
            {
                SpecificationId = specificationId,
                PublishStatus   = PublishStatus.Updated,
                Version         = 1
            };

            IQueryable <TestVersionItem> versions = Enumerable.Empty <TestVersionItem>().AsQueryable <TestVersionItem>();

            ICosmosRepository cosmosRepository = CreateCosmosRepository();

            cosmosRepository
            .Query <TestVersionItem>()
            .Returns(versions);

            VersionRepository <TestVersionItem> versionRepository = new VersionRepository <TestVersionItem>(cosmosRepository);

            //Act
            newVersion = await versionRepository.CreateVersion(newVersion, currentVersion);

            //Assert
            newVersion
            .Version
            .Should()
            .Be(1);

            newVersion
            .PublishStatus
            .Should()
            .Be(PublishStatus.Approved);

            newVersion
            .Date
            .Date
            .Should()
            .Be(DateTime.Now.Date.ToLocalTime());
        }
        public async Task CreateVersion_GivenACurrentVersionButUnableToFindExistingVersions_SetsVersionToOne()
        {
            //Arrange
            TestVersionItem newVersion = new TestVersionItem
            {
                SpecificationId = specificationId
            };

            TestVersionItem currentVersion = new TestVersionItem
            {
                SpecificationId = specificationId,
                Version         = 1
            };

            IQueryable <TestVersionItem> versions = Enumerable.Empty <TestVersionItem>().AsQueryable <TestVersionItem>();

            ICosmosRepository cosmosRepository = CreateCosmosRepository();

            cosmosRepository
            .Query <TestVersionItem>()
            .Returns(versions);

            VersionRepository <TestVersionItem> versionRepository = new VersionRepository <TestVersionItem>(cosmosRepository);

            //Act
            newVersion = await versionRepository.CreateVersion(newVersion, currentVersion);

            //Assert
            newVersion
            .Version
            .Should()
            .Be(1);

            newVersion
            .PublishStatus
            .Should()
            .Be(PublishStatus.Draft);

            newVersion
            .Date
            .Date
            .Should()
            .Be(DateTime.Now.Date.ToLocalTime());
        }