public function testGetUserPermissionCode()
 {
     $permissions = array('owner', 'print', 'modify', 'copy', 'annot-forms', 'fill-forms', 'extract', 'assemble', 'print-high');
     $enc = new \Com\Tecnick\Pdf\Encrypt\Encrypt();
     $result = $enc->getUserPermissionCode($permissions, 0);
     $this->assertEquals(2147421954, $result);
 }