public function testPrepending()
{
$queue = new Queue();
$queue->append(function ($req, $res, $next) use($queue) {
$queue->prepend(function ($req, $res, $next) {
$res->getBody()->write('Second!');
return $next($req, $res);
});
$res->getBody()->write('First!');
return $next($req, $res);
});
$queue->append(function ($req, $res, $next) use($queue) {
$queue->append(function ($req, $res, $next) {
$res->getBody()->write('Sixth!');
return $next($req, $res);
});
$res->getBody()->write('Third!');
return $next($req, $res);
});
$queue->append(function ($req, $res, $next) use($queue) {
$queue->prepend(function ($req, $res, $next) {
$res->getBody()->write('Fifth!');
return $next($req, $res);
});
$res->getBody()->write('Fourth!');
return $next($req, $res);
});
$this->assertEquals('First!Second!Third!Fourth!Fifth!Sixth!', (string) Runtime::run($queue)->getBody(), 'first time');
$this->assertEquals('First!Second!Third!Fourth!Fifth!Sixth!', (string) Runtime::run($queue)->getBody(), 'second time');
$this->assertEquals('First!Second!Third!Fourth!Fifth!Sixth!', (string) Runtime::run($queue)->getBody(), 'third time');
}
/**
* @param callable $middleware
*
* @return $this
*/
public function prepend($middleware)
{
$this->queue->prepend($this->prepareMiddleware($middleware));
return $this;
}
public static function run(Queue $queue, ServerRequestInterface $request = null, ResponseInterface $response = null)
{
return $queue->run($request ?: Http::getServerRequest(), $response ?: new Response());
}