How to use autowired services when using PhpUnit? - php

Question

Was testing an application and was repeatable getting the infamous new entity not configured to cascade persist error. I was surprised since I wasn't even creating new entities, and after digging into it, it appears to be relate to using different instances of the EntityManager object (I have confirmed that they are working with the same database, however) which I guess makes sense since each test will have a transaction applied. The only way I was able to get rid of the errors was to use the entityManager in the container instead of the autowired ones. While it works, it is a bit of a kludge and I would like to know the right way of doing this. Thank you
namespace App\Tests;
use ApiPlatform\Symfony\Bundle\Test\ApiTestCase;
class MyTest extends ApiTestCase
{
/**
* #dataProvider getData
*/
public function testWhichDoesNotWork(int $id, string $class)
{
$service = static::getContainer()->get(MyService::class);
$user = $service->getUser();
$randomEntity = $service->getRandomEntity($user->getTenant(), $class);
$randomEntity->setSomething('something');
$service->saveEntity($randomEntity);
}
/**
* #dataProvider getData
*/
public function testWhichWorks(int $id, string $class)
{
$service = static::getContainer()->get(MyService::class);
$em = static::getContainer()->get(EntityManagerInterface::class);
$user = $service->getUser();
$randomId = $service->getRandomEntityId($user->getTenant(), $class);
$randomEntity = $em->getRepository($class)->find($randomId);
$randomEntity->setSomething('something');
$em->persist($randomEntity);
$em->flush();
}
/**
* #dataProvider getData
*/
public function testAnotherWhichWorks(int $id, string $class)
{
$service = static::getContainer()->get(MyService::class);
$service->setNewEntityManager(static::getContainer()->get(EntityManagerInterface::class));
$user = $service->getUser();
$randomEntity = $service->getRandomEntity($user->getTenant(), $class);
$randomEntity->setSomething('something');
$service->saveEntity($randomEntity);
}
public function getData(): array
{
return [
[123, SomeClass::class]
];
}
}
namespace App\Test\Service;
final class MyService
{
public function __construct(private EntityManagerInterface $entityManager)
{}
public function setNewEntityManager(EntityManagerInterface $entityManager):self
{
$this->entityManager = $entityManager;
return $this;
}
public function getDatabase():string
{
return $this->entityManager->getConnection()->getDatabase();
}
public function getUser(int $id):User
{
return $this->entityManager->getRepository(User::class)->find($id);
}
public function getRandomId(Tenant $tenant, string $class):int
{
$meta = $this->entityManager->getClassMetadata($class);
$_sql = 'SELECT %s FROM public.%s WHERE tenant_id=? OFFSET floor(random() * (SELECT COUNT(*) FROM public.%s WHERE tenant_id=?)) LIMIT 1;';
$sql = sprintf($_sql, $meta->getSingleIdentifierFieldName(), $meta->getTableName(), $meta->getTableName());
return $this->entityManager->getConnection()->prepare($sql)->execute([$tenant->getId(), $tenant->getId()])->fetchOne();
}
public function getRandomEntity(Tenant $tenant, string $class):object
{
return $this->entityManager->getRepository($class)->find($this->getRandomId($tenant, $class));
}
public function saveEntity(object $entity):self
{
$this->entityManager->persist($entity);
$this->flush();
return $this;
}
}
services:
app.test.my.service:
alias: App\Test\Service\MyService
public: true