# connection options
$r[^redis::open[ $.unix_socket[$env:REDIS_SOCKET] $.password[test] ]]
1. unix socket: ^r.ping[]
2. acl setuser: ^r.acl[SETUSER;alice;on;>secret;~*;+@all]
$alice[^redis::open[ $.port(6399) $.user[alice] $.password[secret] ]]
3. user: ^alice.acl[WHOAMI]
$r2[^open_redis[ $.protocol(2) ]]
4. protocol 2 auth: ^r2.ping[]
$db1[^open_redis[ $.db(1) ]]
5. set in db 1: ^db1.set[only_in_1;x]
$v[^r.get[only_in_1]]
6. db: ^db1.get[only_in_1] ^if($v is void){void in 0}
7. no password: ^failed{^redis::open[ $.port(6399) ]}
8. wrong password: ^failed{^redis::open[ $.port(6399) $.password[wrong] ]}
9. refused: ^failed{^redis::open[ $.port(1) ]}
10. unix socket and port: ^failed{^redis::open[ $.unix_socket[$env:REDIS_SOCKET] $.port(6399) ]}
11. invalid option: ^failed{^redis::open[ $.hots[localhost] ]}
12. protocol 4: ^failed{^redis::open[ $.protocol(4) ]}
$t[^open_redis[ $.timeout(0.3) ]]
13. timeout: ^failed{^t.blpop[nolist;5]}