Laravel\Lumen\Testing\Concerns\MakesHttpRequests::prepareUrlForRequest PHP Method

    protected function prepareUrlForRequest($uri)
    {
        if (Str::startsWith($uri, '/')) {
            $uri = substr($uri, 1);
        }
        if (!Str::startsWith($uri, 'http')) {
            $uri = $this->baseUrl . '/' . $uri;
        }
        return trim($uri, '/');
    }