public function testCallingAContainerCallable()
{
$settings = ['foo' => function ($c) {
return function ($a) {
return $a;
};
}];
$app = new App($settings);
$result = $app->foo('bar');
$this->assertSame('bar', $result);
$headers = new Headers();
$body = new Body(fopen('php://temp', 'r+'));
$request = new Request('GET', Uri::createFromString(''), $headers, [], [], $body);
$response = new Response();
$response = $app->notFoundHandler($request, $response);
$this->assertSame(404, $response->getStatusCode());
}