Doctrine/DBAL/Platforms/MySqlPlatform.php is missing test coverage around _getCreateTableSQL method

In "Doctrine/DBAL/Platforms/MySqlPlatform.php", the following methods are public: getShowDatabasesSQL, getCreateDatabaseSQL, getDropDatabaseSQL, getDropTableSQL (easy to test); however, the "_getCreateTableSQL" method is not public.

Is there a specific reason for this difference?

As a result of this method not being tested, there is a "quote" method being called which doesn't exist.

See: https://github.com/doctrine/dbal/blob/master/lib/Doctrine/DBAL/Platforms/MySqlPlatform.php#L410

The only way at this time to test for this case is to get an error when doing: $table->addOption('comment', '...');

I would suggest making the protected method public so it can be tested. I also suggest moving the options parsing out of _getCreateTableSQL into a helper method...this method seems a bit overloaded.

If agreed, I'm happy to take care of the cleanup. Just wanted to get some feedback on the ideas first.