public function testMultipleAndPredicates()
{
$pred = $this->getPredicate()->where('language.0', '==', 'English')->andWhere('population', '>', 300000)->andWhere('region', '==', 'Americas');
$qe = new QueryExecuter($this->getRepo('countries'), $pred, array(), array());
$result = $qe->run();
$this->assertEquals(5, $result->total());
}