
PASS TransactionInactiveError v.s. InvalidStateError(deleted index) 
PASS InvalidStateError(deleted source) v.s. InvalidAccessError(incorrect source) 
PASS InvalidStateError(deleted source) v.s. InvalidAccessError(incorrect direction) 
PASS InvalidAccessError(incorrect direction) v.s. InvalidStateError(iteration complete) 
PASS InvalidAccessError(incorrect direction) v.s. InvalidStateError(iteration ongoing) 
PASS InvalidAccessError(incorrect source) v.s. InvalidStateError(iteration ongoing) 
PASS InvalidAccessError(incorrect source) v.s. InvalidStateError(iteration complete) 
PASS InvalidStateError(iteration ongoing) v.s. DataError(unset key) 
PASS InvalidStateError(iteration complete) v.s. DataError(unset key) 
PASS DataError(unset key) 
PASS DataError(unset primary key) 
PASS DataError(keys are lower then current one) in 'next' direction 
PASS DataError(keys are larger then current one) in 'prev' direction