Added missing iterator tests.
Added missing iterator tests.

martiis/ElasticsearchBundle,ndinh215/ONGRElasticsearchBundle,saimaz/ElasticsearchBundle,abhiesa-tolexo/ElasticsearchBundle,asev/ElasticsearchBundle,asev/ElasticsearchBundle,trandangtri/ElasticsearchBundle,saimaz/ElasticsearchBundle,murnieza/ElasticsearchBundle,tautrimas/ElasticsearchBundle,martiis/ElasticsearchBundle,lmikelionis/ElasticsearchBundle,abhiesa-tolexo/ElasticsearchBundle,murnieza/ElasticsearchBundle,GrandLTU/ElasticsearchBundle,tautrimas/ElasticsearchBundle,trandangtri/ElasticsearchBundle,GrandLTU/ElasticsearchBundle,ongr-io/ElasticsearchBundle,ndinh215/ONGRElasticsearchBundle