How to mock services in DI (using codeception)?

So, after a few days of investigating I come here, and guess it's my last hope.

I try writing functional tests for my controllers using Codeception testing framework. I want to replace real service in DI with fake one.

Controller code example:

<?php

namespace App\Controllers;

class IndexController extends ControllerBase
{
  public function indexAction()
  {
    // some logic here
    $service = $this->getDI()->get('myService');
    $service->doSomething();
    // some logic here
  }
}

Test code example:

<?php

namespace App\Functional;

class IndexControllerCest
{
  public function testIndexAction()
  {
    // Here i want to mock myService, replace real object that in controller with fake one
  }
}

I already try different combinations with Codeception Phalcon module like addServiceToContainer. I setup Codeception using bootstrap.php file almost the same as for real app.

Phalcon version: 3.4.1 Codeception version: 3.1

So my question in last code fragment on comment section. Thank you for any help.