Symfony Functional Testing - How to mock controller injected service with request(submit) - php

Question

How can I mock a service in a functional test use-case where a "request"(form/submit) is being made. After I make the request all the changes and mocking I made to the container are lost.
I am using Symfony 4 or 5. The code posted here can be also found here: https://github.com/klodoma/symfony-demo
I have the following scenario:
SomeActions service is injected into the controller constructor
in the functional unit-tests I try to mock the SomeActions functions in order to check that they are executed(it sends an email or something similar)
I mock the service and overwrite it in the unit-tests:
$container->set('App\Model\SomeActions', $someActions);
Now in the tests I do a $client->submit($form); which I know that it terminates the kernel.
My question is: HOW can I inject my mocked $someActions in the container after $client->submit($form);
Below is a sample code I added to the symfony demo app
https://github.com/symfony/demo
in services.yaml
App\Model\SomeActions:
public: true
SomeController.php
<?php
namespace App\Controller;
use App\Model\SomeActions;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;
/**
* Controller used to send some emails
*
* #Route("/some")
*/
class SomeController extends AbstractController
{
private $someActions;
public function __construct(SomeActions $someActions)
{
//just dump the injected class name
var_dump(get_class($someActions));
$this->someActions = $someActions;
}
/**
* #Route("/action", methods="GET|POST", name="some_action")
* #param Request $request
* #return Response
*/
public function someAction(Request $request): Response
{
$this->someActions->doSomething();
if ($request->get('send')) {
$this->someActions->sendEmail();
}
return $this->render('default/someAction.html.twig', [
]);
}
}
SomeActions
<?php
namespace App\Model;
use Symfony\Component\Mailer\MailerInterface;
use Symfony\Component\Mime\Email;
class SomeActions
{
private $mailer;
public function __construct(MailerInterface $mailer)
{
$this->mailer = $mailer;
}
public function doSomething()
{
echo 'doSomething';
}
public function sendEmail()
{
echo 'sendEmail';
$email = (new Email())
->from('hello#example.com')
->to('you#example.com')
->subject('Time for Symfony Mailer!')
->text('Sending emails is fun again!')
->html('<p>See Twig integration for better HTML integration!</p>');
$this->mailer->send($email);
}
}
SomeControllerTest.php
<?php
namespace App\Tests\Controller;
use App\Model\SomeActions;
use Symfony\Bundle\FrameworkBundle\Test\WebTestCase;
class SomeControllerTest extends WebTestCase
{
public function testSomeAction()
{
$client = static::createClient();
// gets the special container that allows fetching private services
$container = self::$container;
$someActions = $this->getMockBuilder(SomeActions::class)
->disableOriginalConstructor()
->getMock();
//expect that sendEmail will be called
$someActions->expects($this->once())
->method('sendEmail');
//overwrite the default service: class: Mock_SomeActions_e68f817a
$container->set('App\Model\SomeActions', $someActions);
$crawler = $client->request('GET', '/en/some/action');
//submit the form
$form = $crawler->selectButton('submit')->form();
$client->submit($form);
//after submit the default class injected in the controller is "App\Model\SomeActions" and not the mocked service
$response = $client->getResponse();
$this->assertResponseIsSuccessful($response);
}
}

Answer 1

The solution is to disable the kernel reboot:
$client->disableReboot();
It makes sense if ones digs deep enough to understand what's going on under the hood;
I am still not sure if there isn't a more straight forward answer.
public function testSomeAction()
{
$client = static::createClient();
$client->disableReboot();
...