GitSharp.Core.DirectoryCache.DirCacheEntry.setFileMode C# (CSharp) Method

        public void setFileMode(FileMode mode)
        {
            NB.encodeInt32(_info, _infoOffset + PMode, mode.Bits);
        }

        public void testNonRecursiveFiltering()
        {
            var ow = new ObjectWriter(db);
            ObjectId aSth = ow.WriteBlob("a.sth".getBytes());
            ObjectId aTxt = ow.WriteBlob("a.txt".getBytes());
            DirCache dc = DirCache.read(db);
            DirCacheBuilder builder = dc.builder();
            var aSthEntry = new DirCacheEntry("a.sth");
            aSthEntry.setFileMode(FileMode.RegularFile);
            aSthEntry.setObjectId(aSth);
            var aTxtEntry = new DirCacheEntry("a.txt");
            aTxtEntry.setFileMode(FileMode.RegularFile);
            aTxtEntry.setObjectId(aTxt);
            builder.add(aSthEntry);
            builder.add(aTxtEntry);
            builder.finish();
            ObjectId treeId = dc.writeTree(ow);


            var tw = new GitSharp.Core.TreeWalk.TreeWalk(db);
            tw.setFilter(PathSuffixFilter.create(".txt"));
            tw.addTree(treeId);

            var paths = new LinkedList<string>();
            while (tw.next())
            {
                paths.AddLast(tw.getPathString());
            }

            var expected = new LinkedList<string>();
            expected.AddLast("a.txt");

            Assert.AreEqual(expected, paths);
        }