public function testEmptyEncode()
{
$handler = Media::type('empty', 'empty/encode');
$this->assertNull(Media::encode($handler, array()));
$handler = Media::type('empty', 'empty/encode', array('encode' => null));
$this->assertNull(Media::encode($handler, array()));
$handler = Media::type('empty', 'empty/encode', array('encode' => false));
$this->assertNull(Media::encode($handler, array()));
$handler = Media::type('empty', 'empty/encode', array('encode' => ""));
$this->assertNull(Media::encode($handler, array()));
}