Add test cases for get_all_DBAdaptors
Add test cases for get_all_DBAdaptors

james-monkeyshines/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,muffato/ensembl,muffato/ensembl,Ensembl/ensembl,muffato/ensembl,james-monkeyshines/ensembl,Ensembl/ensembl,james-monkeyshines/ensembl,muffato/ensembl,Ensembl/ensembl