Issue with HTTP Feature Testing

Alright i found an aswer for my own question. I think it has to do with

The $params array does not make sense for every HTTP verb, but is included for consistency.

as written in the manual that not all request types support $params. Maybe GET is one of them. But for sake of consistency i wrote my own tiny solution to request endpoints in testing:

PHP Code:

/**
 * Request endpoint.
 * @method req
 */
public function req(string $type = 'GET', string $url = '', array $params = []):object
{
    # Prepare parameters & type.
    $params = http_build_query($params);
    $type  = strtoupper($type);

    # Base url with get parameters.
    $base_url = rtrim(config('app')->baseURL, '/') . '/' . ltrim($url, '/') . (
        ($type == 'GET')
            ? '?' . $params
            : ''
    );
    $contents = file_get_contents($base_url, context: stream_context_create([
        'ssl' => [
            'verify_peer' => false,
            'verify_peer_name' => false
        ],
        'http' => [
            'method'  => $type,
            'header'  => 'Content-type: application/x-www-form-urlencoded' . "\r\n" .
                        'Content-Length: ' . strlen($params) . "\r\n",
            'content' => $params,
            'ignore_errors' => true
        ]
    ]));

    # http headers.
    $httphead = $http_response_header;
    $head = [];

    # Assoc headers.
    foreach ($httphead as $n => $value)
    {
        $explode = explode(':', $value);
        $key = ($n == 0 || count($explode) == 1)
            ? $n
            : strtolower(reset($explode)) ;

        # Set header key and value.
        $head[$key] = $value;
    }

    # Proper status and url.
    $head['url']    = $base_url;
    $head['status'] = $head[0];

    # Remove numeric status representation.
    unset($head[0]);

    # Extract response code.
    $head['code'] = (int) explode(' ', $head['status'])[1];

    # Return headers.
    return (object) [
        'header' => (object) $head,
        'body' => $contents
    ];
} 


What helped alot is that CodeIgniter actually got my request by:

PHP Code:

$this->request->getBody(); 


Hope this helps someone!