public function testIsFromCache()
 {
     $query = $this->getMockBuilder('\\SMWQuery')->disableOriginalConstructor()->getMock();
     $store = $this->getMockBuilder('\\SMW\\Store')->disableOriginalConstructor()->getMockForAbstractClass();
     $printRequests = array();
     $results = array();
     $instance = new QueryResult($printRequests, $query, $results, $store);
     $this->assertFalse($instance->isFromCache());
     $instance->setFromCache(true);
     $this->assertTrue($instance->isFromCache());
 }