protected function tearDown()
 {
     Request::$requestHandler = new RequestHandler();
     parent::tearDown();
 }
<?php

namespace SugarClient\Http;

use SugarClient\Http\ApiAction\RequestAction;
/**
 * Class Request
 * @package SugarClient\Http
 * @author Piotr Olaszewski <piotroo89 [%] gmail dot com>
 */
class Request
{
    public static $requestHandler = null;
    public static function call(RequestAction $requestAction)
    {
        $post = array("method" => $requestAction->getMethod(), "input_type" => "JSON", "response_type" => "JSON", "rest_data" => $requestAction->getRestData());
        return self::doRequest($post);
    }
    public static function callMethod($method, $parameters)
    {
        $post = array("method" => $method, "input_type" => "JSON", "response_type" => "JSON", "rest_data" => json_encode($parameters));
        return self::doRequest($post);
    }
    private static function doRequest($post)
    {
        return self::$requestHandler->handle($post);
    }
}
Request::$requestHandler = new RequestHandler();