/**
* @param \Psr\Http\Message\ServerRequestInterface $request The server request
* @param \Psr\Http\Message\ResponseInterface $response The response object
* @return \Psr\Http\Message\ResponseInterface An updated response
*/
public function __invoke(ServerRequestInterface $request, ResponseInterface $response)
{
$next = $this->middleware->get($this->index);
if ($next) {
$this->index++;
return $next($request, $response, $this);
}
// End of the stack
return $response;
}
public function testInsertAt()
{
$one = function () {
};
$two = function () {
};
$three = function () {
};
$stack = new MiddlewareStack();
$stack->push($one)->push($two)->insertAt(0, $three);
$this->assertSame($three, $stack->get(0));
$this->assertSame($one, $stack->get(1));
$this->assertSame($two, $stack->get(2));
$stack = new MiddlewareStack();
$stack->push($one)->push($two)->insertAt(1, $three);
$this->assertSame($one, $stack->get(0));
$this->assertSame($three, $stack->get(1));
$this->assertSame($two, $stack->get(2));
}
