/**
* @covers WPSEO_Twitter::twitter_title
*/
public function test_twitter_title()
{
// create and go to post
$post_id = $this->factory->post->create();
$this->go_to(get_permalink($post_id));
$expected = $this->metatag('title', self::$class_instance->title(''));
self::$class_instance->twitter_title();
$this->expectOutput($expected);
}