public void TestIComparable()
{
var objectId1 = (BsonObjectId)ObjectId.GenerateNewId();
var objectId2 = (BsonObjectId)ObjectId.GenerateNewId();
Assert.AreEqual(0, objectId1.CompareTo(objectId1));
Assert.AreEqual(-1, objectId1.CompareTo(objectId2));
Assert.AreEqual(1, objectId2.CompareTo(objectId1));
Assert.AreEqual(0, objectId2.CompareTo(objectId2));
}