public virtual void testBackDoesNothing()
        {
            EmptyTreeIterator etp = new EmptyTreeIterator();
            etp.back(1);
            Assert.IsTrue(etp.first());
            Assert.IsTrue(etp.eof());
            Assert.AreEqual(ObjectId.ZeroId, ObjectId.FromRaw(etp.idBuffer()));

            etp.back(1);
            Assert.IsTrue(etp.first());
            Assert.IsTrue(etp.eof());
            Assert.AreEqual(ObjectId.ZeroId, ObjectId.FromRaw(etp.idBuffer()));
        }
 public virtual void testAtEOF()
 {
     EmptyTreeIterator etp = new EmptyTreeIterator();
     Assert.IsTrue(etp.first());
     Assert.IsTrue(etp.eof());
 }