MongoDB.GridFS.GridFileInfoTest.TestModeCreateNew C# (CSharp) Метод

        public void TestModeCreateNew()
        {
            Object id;
            string filename = "createnew.txt";
            GridFileInfo gfi = new GridFileInfo(db["tests"],"gfcreate", filename);
            using(GridFileStream gfs = gfi.Create(FileMode.CreateNew)){
                id = gfs.GridFileInfo.Id;
                TextWriter tw = new StreamWriter(gfs);
                tw.WriteLine("test");
                tw.Close();
            }
            Assert.AreEqual(1, CountChunks("gfcreate", id));
        }