Database connection is not checked during setup

[tzyganu]

I discovered this by accident.
I misspelled the name of my database on install and didn't click on "Test connection and authentication" in the database step of the setup.
The setup goes through until the last step without notifying the user that it cannot connect to the db.
But this is just half of the problem.
I ended up seeing the error message in the final install step in the console.
[ERROR] exception 'Exception' with message 'exception 'PDOException' with message 'SQLSTATE[HY000] [1049] Unknown database 'wrong_db_name_here' in lib\internal\Zend\Db\Adapter\Pdo\Abstract.php:129
and tried to rerun the setup. But it is useless.
The app/etc/local.xml file is already written on the disk and my modifications to the db settings are ignored.
To make it work I have to delete the local.xml file and run the setup again.

Issue spotted on alpha99.

[verklov]

@tzyganu, thanks for reporting this issue! The team has also discovered this internally and is working on fixing this issue. We will keep you updated.

[verklov]

@tzyganu, according to the latest steps, database connection is checked once you specify database server name, database name, password and choose to proceed with installation. We are closing this ticket now.