public function testDownload()
 {
     $max_tries = 3;
     $client = new FakeClient();
     $client->tries = $max_tries;
     $downloader = new PageDownloader();
     $downloader->setClient($client);
     $downloader->setWaitTime(0);
     try {
         $downloader->download('test', $max_tries);
         $this->fails();
     } catch (DownloadException $e) {
         $this->assertEquals($max_tries . ' attempts failed to download this page', $e->getMessage());
     }
     $response_2 = $downloader->download('test', $max_tries + 1);
     $this->assertEquals('foo', $response_2);
 }