public function testExtract() { $crawler = new Crawler(); $str = html_entity_decode(file_get_contents(__DIR__ . '/../../Resources/embedded_videos.html')); $crawler->addContent($str); $tubelink = TubeLink::create(); $extractor = new IframeExtractor($tubelink); $generated = $extractor->extract($crawler); $this->assertCount(3, $generated); }