public function testNodeVisitorAlterNothingIfNotNeeded($template)
{
$env = new \Twig_Environment(new \Twig_Loader_String(), array('cache' => false, 'autoescape' => false));
$stream = $env->parse($env->tokenize($template));
$env = new \Twig_Environment(new \Twig_Loader_String(), array('cache' => false, 'autoescape' => false));
$env->addNodeVisitor(new Paginator());
$streamWithNodeVisitorRegistred = $env->parse($env->tokenize($template));
$this->assertSame((string) $stream, (string) $streamWithNodeVisitorRegistred);
}