trait ApiRequestTrait

trait ApiRequestTrait {
    
    /**
     * Performs an HTTP request. Wraps the Guzzle HTTP client.
     *
     * Why wrap the Guzzle HTTP client? Because we want to keep the actual test
     * code as simple as possible, and hence not require them to specify the
     * 'http_errors = FALSE' request option, nor do we want them to have to
     * convert Drupal Url objects to strings.
     *
     * We also don't want to follow redirects automatically, to ensure these tests
     * are able to detect when redirects are added or removed.
     *
     * @param string $method
     *   HTTP method.
     * @param \Drupal\Core\Url $url
     *   URL to request.
     * @param array $request_options
     *   Request options to apply.
     *
     * @return \Psr\Http\Message\ResponseInterface
     *   The response.
     *
     * @see \GuzzleHttp\ClientInterface::request()
     */
    protected function makeApiRequest($method, Url $url, array $request_options) {
        // HEAD requests do not have bodies. If one is specified, Guzzle will not
        // ignore it and the request will be treated as GET with an overridden
        // method string, and libcurl will expect to read a response body.
        if ($method === 'HEAD' && array_key_exists('body', $request_options)) {
            unset($request_options['body']);
        }
        $this->refreshVariables();
        $request_options[RequestOptions::HTTP_ERRORS] = FALSE;
        $request_options[RequestOptions::ALLOW_REDIRECTS] = FALSE;
        $request_options = $this->decorateWithXdebugCookie($request_options);
        $client = $this->getSession()
            ->getDriver()
            ->getClient()
            ->getClient();
        return $client->request($method, $url->setAbsolute(TRUE)
            ->toString(), $request_options);
    }
    
    /**
     * Adds the Xdebug cookie to the request options.
     *
     * @param array $request_options
     *   The request options.
     *
     * @return array
     *   Request options updated with the Xdebug cookie if present.
     */
    protected function decorateWithXdebugCookie(array $request_options) {
        $session = $this->getSession();
        $driver = $session->getDriver();
        if ($driver instanceof BrowserKitDriver) {
            $client = $driver->getClient();
            foreach ($client->getCookieJar()
                ->all() as $cookie) {
                if (isset($request_options[RequestOptions::HEADERS]['Cookie'])) {
                    $request_options[RequestOptions::HEADERS]['Cookie'] .= '; ' . $cookie->getName() . '=' . $cookie->getValue();
                }
                else {
                    $request_options[RequestOptions::HEADERS]['Cookie'] = $cookie->getName() . '=' . $cookie->getValue();
                }
            }
        }
        return $request_options;
    }

}