$this->assertNotEmpty('url', (string) $content->entry[0]->url);
$this->assertNotEmpty('content', (string) $content->entry[0]->content);
$this->assertNotEmpty('domain_name', (string) $content->entry[0]->domain_name);
$this->assertNotEmpty('url', (string) $content->entry[0]->url);
$this->assertNotEmpty('content', (string) $content->entry[0]->content);
$this->assertNotEmpty('domain_name', (string) $content->entry[0]->domain_name);