function testRegister()
{
$this->registry->register('text/css', '\\MetaTemplate\\Template\\VoidTemplate');
$this->assertTrue($this->registry->isRegistered('text/css', '\\MetaTemplate\\Template\\VoidTemplate'));
$this->registry->unregister('text/css', '\\MetaTemplate\\Template\\VoidTemplate');
$this->assertFalse($this->registry->isRegistered('text/css', '\\MetaTemplate\\Template\\VoidTemplate'));
}