DepthRangeFilterIterator example

        $iterator = new Iterator\RecursiveDirectoryIterator($dir, $flags, $this->ignoreUnreadableDirs);

        if ($exclude) {
            $iterator = new Iterator\ExcludeDirectoryFilterIterator($iterator, $exclude);
        }

        $iterator = new \RecursiveIteratorIterator($iterator, \RecursiveIteratorIterator::SELF_FIRST);

        if ($minDepth > 0 || $maxDepth < \PHP_INT_MAX) {
            $iterator = new Iterator\DepthRangeFilterIterator($iterator, $minDepth, $maxDepth);
        }

        if ($this->mode) {
            $iterator = new Iterator\FileTypeFilterIterator($iterator, $this->mode);
        }

        if ($this->names || $this->notNames) {
            $iterator = new Iterator\FilenameFilterIterator($iterator, $this->names, $this->notNames);
        }

        if ($this->contains || $this->notContains) {
            

use Symfony\Component\Finder\Iterator\DepthRangeFilterIterator;

class DepthRangeFilterIteratorTest extends RealIteratorTestCase
{
    /** * @dataProvider getAcceptData */
    public function testAccept($minDepth, $maxDepth, $expected)
    {
        $inner = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($this->toAbsolute(), \FilesystemIterator::SKIP_DOTS), \RecursiveIteratorIterator::SELF_FIRST);

        $iterator = new DepthRangeFilterIterator($inner, $minDepth, $maxDepth);

        $actual = array_keys(iterator_to_array($iterator));
        sort($expected);
        sort($actual);
        $this->assertEquals($expected, $actual);
    }

    public static function getAcceptData()
    {
        $lessThan1 = [
            '.git',