Dev2.Core.Tests.Repositories.StudioResourceRepositoryTests.StudioResourceRepository_Filter_NullAfterFilter_ReturnsOriginalCollection C# (CSharp) Method

        public void StudioResourceRepository_Filter_NullAfterFilter_ReturnsOriginalCollection()
        {
            //------------Setup for test--------------------------
            var mockExplorerResourceRepository = new Mock<IClientExplorerResourceRepository>();
            var explorerItem = GetTestData();
            SetupEnvironmentRepo(Guid.Empty);
            var mockVersionRepository = new Mock<IVersionRepository>();
            var repository = new StudioResourceRepository(explorerItem, Guid.Empty, _invoke)
                {
                    GetVersionProxy = id => mockVersionRepository.Object,
                    GetExplorerProxy = id => mockExplorerResourceRepository.Object
                };
            //------------Preconditions--------------------------
            Assert.AreEqual(4, repository.ExplorerItemModels[0].ChildrenCount);
            var explorerItemModels = repository.Filter(model => model.DisplayName.Contains("r1"));
            Assert.AreEqual(0, explorerItemModels[0].ChildrenCount);
            Assert.AreEqual(1, explorerItemModels[0].Children.Count);
            //------------Execute Test---------------------------
            repository.Filter(null);
            //------------Assert Results-------------------------
            Assert.AreEqual(4, repository.ExplorerItemModels[0].ChildrenCount);
        }