function testAddDriver()
{
DatabaseDriverManager::addDriver('CantRun', 'DatabaseDriverManagerTest', false);
$this->assertFalse(DatabaseDriverManager::canDriverRun('CantRun'));
$r = DatabaseDriverManager::addDriver('CantRun', 'DatabaseDriverManagerTest', false);
$this->assertTrue($r->is(new Error('DBDRIVER_ALREADY_ADDED', 'CantRun')));
$r = DatabaseDriverManager::addDriver('InvalidClass', 'InvalidClassName', false);
$this->assertTrue($r->is(new Error('DBDRIVERCLASS_NOTFOUND', 'InvalidClass', 'InvalidClassName')));
}
/**
* Loads and returns a database driver.
*
* @since 0.4
* @return (DatabaseDriver)
* @param $driverName (string) the name of the driver
*/
function loadDriver($driverName)
{
global $_DBDriverList;
if (DatabaseDriverManager::canDriverRun($driverName)) {
return new $_DBDriverList[$driverName]['className']();
} else {
return new Error('INVALID_DATABASEDRIVER', $driverName);
}
}