public function test_emptyfield()
 {
     global $ID;
     $ID = 'no:data';
     $lines = array("schema    : bar", "cols      : %pageid%, data", "filter    : %pageid% = \$STRUCT.foo.pages\$");
     $configParser = new meta\ConfigParser($lines);
     $actual_config = $configParser->getConfig();
     $search = new meta\SearchConfig($actual_config);
     $result = $search->execute();
     $this->assertEquals(0, count($result), 'if no pages a given, then none should be shown');
 }