public function testGetPopularVideos()
{
$maxResult = rand(10, 30);
$regionCode = 'us';
$response = $this->youtube->getPopularVideos($regionCode, $maxResult);
$this->assertNotNull('response');
$this->assertEquals($maxResult, count($response));
$this->assertEquals('youtube#video', $response[0]->kind);
$this->assertObjectHasAttribute('statistics', $response[0]);
$this->assertObjectHasAttribute('status', $response[0]);
$this->assertObjectHasAttribute('snippet', $response[0]);
$this->assertObjectHasAttribute('contentDetails', $response[0]);
}