public void throws_exception_on_insert_if_id_retrieved_from_GetNextID_already_exists()
        {
            var dataProxy = new PersonDataProxyWithBadIDIncrementLogic();

            dataProxy.Insert(new Person {
                Name = "Steve How"
            });
        }
 public async Task throws_exception_on_insert_if_id_retrieved_from_GetNextID_already_exists_async()
 {
     var dataProxy = new PersonDataProxyWithBadIDIncrementLogic();
     await dataProxy.InsertAsync(new Person { Name = "Steve How" });
 }