Dev2.Intellisense.Helper.FileSystemQuery.FindNetworkComputers C# (CSharp) Méthode

       public List<string> FindNetworkComputers()
        {

            var root =  _directoryEntryFactory.Create( "WinNT:");
            return (from IDirectoryEntry dom in root.Children
                    from IDirectoryEntry entry in dom.Children
                    where entry.SchemaClassName == "Computer"
                    select @"\\"+entry.Name).ToList();
        }

        public void FileSystemQuery_FindNetworkComputers_ValidEntries_ExpectReturned()
        {
            //------------Setup for test--------------------------
            var dirFact = new Mock<IDirectoryEntryFactory>();
            var dir = new Mock<IDirectoryEntry>();
            var children = new Mock<IDirectoryEntries>();
            var gChildren = new Mock<IDirectoryEntries>();
            var actualChildren = new List<Mock<IDirectoryEntry>>
                {
                    new Mock<IDirectoryEntry>()

                };
               var actualGChildren = new List<Mock<IDirectoryEntry>>
                {
                    new Mock<IDirectoryEntry>()

                };
            actualGChildren.ForEach(
                b=>b.Setup(a=>a.Name).Returns("a"));
            actualGChildren.ForEach(
                b => b.Setup(a => a.SchemaClassName).Returns("Computer"));
            actualChildren.ForEach(
                b=>b.Setup(a=>a.SchemaClassName).Returns("Computer"));
            dirFact.Setup(a => a.Create(It.IsAny<string>())).Returns(dir.Object);

            dir.Setup(a => a.Children).Returns(children.Object);
            children.Setup(a => a.GetEnumerator())
                .Returns(actualChildren.Select(a=>a.Object)
                .GetEnumerator());
            actualChildren.First().Setup(a => a.Children).Returns(gChildren.Object);
            gChildren.Setup(a => a.GetEnumerator()).Returns(actualGChildren.Select(a => a.Object).GetEnumerator());
            //------------Execute Test---------------------------
            var query = new FileSystemQuery(new DirectoryWrapper(), dirFact.Object, new ShareCollectionFactory());

            var res = query.FindNetworkComputers();
            //------------Assert Results-------------------------
            Assert.AreEqual(res.Count, 1);
            Assert.AreEqual("\\\\a", res[0]);
        }