These tests don't work if run as root

ext/spl/tests/DirectoryIterator_getGroup_basic.phpt

@@ -1,15 +1,18 @@
---TEST--
-SPL: DirectoryIterator test getGroup
---CREDITS--
+--TEST--
+SPL: DirectoryIterator test getGroup
+--SKIPIF--
+<?php
+if (posix_geteuid() == 0) die('SKIP Cannot run test as root.');
+--CREDITS--
 Cesare D'Amico <cesare.damico@gruppovolta.it>
 Andrea Giorgini <agiorg@gmail.com>
 Filippo De Santis <fd@ideato.it>
 Daniel Londero <daniel.londero@gmail.com>
 Francesco Trucchia <ft@ideato.it>
 Jacopo Romei <jacopo@sviluppoagile.it>
-#Test Fest Cesena (Italy) on 2009-06-20
---FILE--
-<?php
+#Test Fest Cesena (Italy) on 2009-06-20
+--FILE--
+<?php
 $dirname = 'DirectoryIterator_getGroup_basic';
 mkdir($dirname);
 $dir = new DirectoryIterator($dirname);
@@ -21,6 +24,6 @@ var_dump($expected == $actual);
 <?php
 $dirname = 'DirectoryIterator_getGroup_basic';
 rmdir($dirname);
-?>
---EXPECTF--
+?>
+--EXPECTF--
 bool(true)

ext/spl/tests/DirectoryIterator_getOwner_basic.phpt

@@ -1,5 +1,8 @@
 --TEST--
 SPL: DirectoryIterator test getOwner
+--SKIPIF--
+<?php
+if (posix_geteuid() == 0) die('SKIP Cannot run test as root.');
 --CREDITS--
 Cesare D'Amico <cesare.damico@gruppovolta.it>
 Andrea Giorgini <agiorg@gmail.com>