Fix attaching to database if database does not exists

[Tomas2D]

Hey, I find out that attachOrCreate does not work properly – the createDatabase is never being called from attachOrCreate method.

The reason is that the error from the database is detected, but there is a pitfall in isError method, which mark input as error only and only if it is plain object and has status property on it, but in this case, the error message with status is attached to object, which is an instance of Database.

This pitfall was not detected in tests, because of not awaiting the detach method - so it never gets propagated.

Thanks.

[Tomas2D]

Also, you will get a better error message if that happens.

This is the old message which you get by calling attach to a database that does not exist. It will also propagate only if the query is made.

Error: select 1 from RDB$DATABASE - invalid database handle (no active connection)

The new error is propagated immediately:

Received: [Error: I/O error during "open" operation for file "/tmp/test.fdb", Error while trying to open file]