public void DeepCopyNotNull()
{
NullableType type = NHibernateUtil.DateTime;
object value1 = DateTime.Now;
object value2 = type.DeepCopy(value1, EntityMode.Poco, null);
Assert.AreEqual(value1, value2, "Copies should be the same.");
value2 = ((DateTime)value2).AddHours(2);
Assert.IsFalse(value1 == value2, "value2 was changed, value1 should not have changed also.");
}