public virtual void testEntryObjectId()
 {
     EmptyTreeIterator etp = new EmptyTreeIterator();
     Assert.AreSame(ObjectId.ZeroId, etp.getEntryObjectId());
     Assert.IsNotNull(etp.idBuffer());
     Assert.AreEqual(0, etp.idOffset());
     Assert.AreEqual(ObjectId.ZeroId, ObjectId.FromRaw(etp.idBuffer()));
 }