Look close to the top and find this:
Code:
$config['Database']['dbtype'] = '';
Make sure you have the correct database type there. If its currently 'mysql' try 'mysqli', save and upload again. I don't know if this is your problem or not.
Also its never a good idea to have your database as test/root/password and stuff like that even if its a test server. Never use root in your vBulletin config. This may open you to potential problems.