registerEntityDefinitionAndInitDatabase example

private Context $context;

    private TestDataCollection $ids;

    protected function setUp(): void
    {
        $this->connection = $this->getContainer()->get(Connection::class);
        $this->versionManager = $this->getContainer()->get(VersionManager::class);

        $this->productRepository = $this->getContainer()->get('product.repository');
        $this->registerEntityDefinitionAndInitDatabase();
        $this->context = Context::createDefaultContext();
        $this->ids = new TestDataCollection();
    }

    protected function tearDown(): void
    {
        $this->connection->rollBack();
        $this->connection->executeStatement(' ALTER TABLE `product` DROP FOREIGN KEY `fk.product.many_to_one_id`; ');