public function testTwigInterface()
{
$app = $this->getApp();
$handlers = $this->getTwigHandlers($app);
$twig = new TwigExtension($app, $handlers, false);
$this->assertGreaterThan(0, $twig->getFunctions());
$this->assertGreaterThan(0, $twig->getFilters());
$this->assertGreaterThan(0, $twig->getTests());
$this->assertEquals('Bolt', $twig->getName());
}