Add directory filter

tests/DirectoryWrapper.php

@@ -8,6 +8,14 @@
 namespace Icewind\Streams\Tests;
 
 class DirectoryWrapperDummy extends \Icewind\Streams\DirectoryWrapper {
+	public static function wrap($source) {
+		$options = array(
+			'dir' => array(
+				'source' => $source)
+		);
+		return self::wrapWithOptions($options);
+	}
+
 	public function dir_readdir() {
 		$file = parent::dir_readdir();
 		if ($file !== false) {