Fixed test on string index
Fixed test on string index

rabernat/PyTables,joonro/PyTables,joonro/PyTables,mohamed-ali/PyTables,dotsdl/PyTables,dotsdl/PyTables,avalentino/PyTables,tp199911/PyTables,jack-pappas/PyTables,gdementen/PyTables,rdhyee/PyTables,cpcloud/PyTables,rdhyee/PyTables,PyTables/PyTables,tp199911/PyTables,rabernat/PyTables,rabernat/PyTables,gdementen/PyTables,tp199911/PyTables,andreabedini/PyTables,FrancescAlted/PyTables,jack-pappas/PyTables,rabernat/PyTables,mohamed-ali/PyTables,gdementen/PyTables,jennolsen84/PyTables,PyTables/PyTables,gdementen/PyTables,cpcloud/PyTables,cpcloud/PyTables,joonro/PyTables,andreabedini/PyTables,jennolsen84/PyTables,tp199911/PyTables,andreabedini/PyTables,avalentino/PyTables,rdhyee/PyTables,FrancescAlted/PyTables,mohamed-ali/PyTables,jennolsen84/PyTables,avalentino/PyTables,cpcloud/PyTables,joonro/PyTables,andreabedini/PyTables,dotsdl/PyTables,mohamed-ali/PyTables,dotsdl/PyTables,jack-pappas/PyTables,rdhyee/PyTables,jack-pappas/PyTables,jack-pappas/PyTables,jennolsen84/PyTables,PyTables/PyTables,FrancescAlted/PyTables