namespace Symfony\Component\Finder\Tests\Iterator;

use Symfony\Component\Finder\Iterator\DepthRangeFilterIterator;
use Symfony\Component\Finder\Iterator\RecursiveDirectoryIterator;

class DepthRangeFilterIteratorTest extends RealIteratorTestCase
{
    // ...

    public function testFtp()
    {
        $inner = new \RecursiveIteratorIterator(new RecursiveDirectoryIterator('ftp://speedtest.tele2.net/', \RecursiveDirectoryIterator::SKIP_DOTS), \RecursiveIteratorIterator::SELF_FIRST);

        $iterator = new DepthRangeFilterIterator($inner, 0, 0);

        $files = iterator_to_array($iterator);

        $this->assertArrayHasKey('ftp://speedtest.tele2.net/1000GB.zip', $files);
        $this->assertArrayHasKey('ftp://speedtest.tele2.net/100GB.zip', $files);
        $this->assertArrayHasKey('ftp://speedtest.tele2.net/10GB.zip', $files);
        $this->assertArrayHasKey('ftp://speedtest.tele2.net/1GB.zip', $files);
    }
}