Symfony send Mail test

TodoTest.php

<?php


namespace Socius\Tests\Todo;



use Socius\Notifier\TodoNotifier;
use Socius\Repository\Todo\CardRepository;
use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Mailer\DataCollector\MessageDataCollector;


class TodoTest extends KernelTestCase
{
  
    protected function setUp():void
    {
        self::bootKernel();

        // returns the real and unchanged service container
        $container = self::$kernel->getContainer();

        // gets the special container that allows fetching private services
        $container = self::$container;
    }

   
    /**
     * @dataProvider getMailData
     */
    public function testMail($now, $expected)
    {

        $profiler = self::$container->get('profiler');
        $todoNotifier = $this->self::$container->get(TodoNotifier::class);
        $todoNotifier->notitfy($now);

        /** @var MessageDataCollector $mailerDataCollector */
        $mailerDataCollector = $profiler->get('mailer');

        $mailerDataCollector->collect(new Request(), new Response());

        $messageEvents = $mailerDataCollector->getEvents()->getEvents('[main]');
        $this->assertCount(count($expected), $messageEvents);

        foreach ($expected as $index => $item) {
            $this->assertEquals($item, $messageEvents[$index]->getMessage()->getHtmlTemplate() );
        }
   }

}