Rename directory in linux

/install # ll
total 8
drwxrwxrwx 2 root root 4096 Aug 28  2018 .snapshot
drwxr-xr-x 2 root root 4096 Sep 25 12:06 test

$ mv test tests

drwxrwxrwx 2 root root 4096 Aug 28  2018 .snapshot
drwxr-xr-x 2 root root 4096 Sep 25 12:06 tests

 cd tests

:/install/tests # ll

total 0