public function testUpdate()
 {
     $searchEngine = $this->getMockBuilder('SearchEngine')->disableOriginalConstructor()->getMock();
     $searchEngine->expects($this->once())->method('update')->with($this->equalTo(42), $this->equalTo('Some title'), $this->equalTo('Some text'));
     $search = new Search();
     $search->setFallbackSearchEngine($searchEngine);
     $search->update(42, 'Some title', 'Some text');
 }