public function testSystemConfigDb()
{
$xml = '<config>
<database>
<connections>
<connection>
<name>testdb</name>
<username>peter</username>
</connection>
</connections>
</database>
</config>';
$config = new SystemConfig();
$connection = new Connection();
$connection->setUsername('peter');
$connection->setType('mysql');
$connection->setName('testdb');
$database = new Database();
$config->setDatabase($database);
$config->getDatabase()->addConnection($connection);
$output = $config->toXml();
$this->assertEquals($xml, $output);
$reverse = new SystemConfig($xml);
$this->assertInternalType('array', $reverse->getDatabase()->getConnections());
$this->assertInstanceOf('\\Jarves\\Configuration\\Connection', $reverse->getDatabase()->getConnections()[0]);
$this->assertEquals('mysql', $reverse->getDatabase()->getConnections()[0]->getType());
$this->assertEquals('peter', $reverse->getDatabase()->getConnections()[0]->getUsername());
$this->assertEquals('testdb', $reverse->getDatabase()->getConnections()[0]->getName());
$this->assertEquals($xml, $reverse->toXml());
}