/**
* @test
*/
public function shouldPrependTwigsExtensionConfig()
{
$factory = new StripeJsPaymentFactory();
$container = new ContainerBuilder();
$factory->prepend($container);
$twigConfig = $container->getExtensionConfig('twig');
//guard
$this->assertTrue(isset($twigConfig[0]['paths']));
$paths = $twigConfig[0]['paths'];
$key = array_search('PayumCore', $paths);
$this->assertFileExists($key);
$key = array_search('PayumStripe', $paths);
$this->assertFileExists($key);
}