pda/testdata/del-db__err__with__invalid_db.ct

$ pda del-db foo/bar --> FAIL
Error: cannot delete-db 'foo/bar': cannot parse db: bad db format, use DB or @DB
	`$ pda del-db foo/bar --> FAIL`
	`Error: cannot delete-db 'foo/bar': cannot parse db: bad db format, use DB or @DB`