Pop\File\File::setDirPermissions PHP Method

    public function setDirPermissions($mode)
    {
        if (file_exists($this->dir)) {
            chmod($this->dir, $mode);
            clearstatcache();
        }
        return $this;
    }

 public function testSetAndGetPermissions()
 {
     $f = new File(__DIR__ . '/../tmp/access.txt');
     if (DIRECTORY_SEPARATOR == '/') {
         $this->assertEquals(777, $f->getPermissions());
         $f->setPermissions(0775);
         $this->assertEquals(775, $f->getPermissions());
         $f->setPermissions(0777);
         $this->assertEquals(777, $f->getPermissions());
         $this->assertEquals(777, $f->getDirPermissions());
         $f->setDirPermissions(0775, true);
         $this->assertEquals(775, $f->getDirPermissions());
         $f->setDirPermissions(0777);
     }
 }