public void AddMappingEntry_SingleEntry_SuccessfullyAdded()
        {
            MappingManager mappingMgr   = Factory_MappingManager_Default();
            IMappingEntry  mappingEntry = Factory_IMappingEntry_Basic();

            int newId = mappingMgr.AddMappingEntry(mappingEntry);

            Assert.AreEqual(mappingEntry.Id, mappingMgr.GetCopyOfMappingEntryById(newId).Value.Id);
        }