setDefaultCurrency example

/** @var EntityRepository $langRepo */
        $langRepo = $this->getContainer()->get('language.repository');

        $lang = $langRepo->search(new Criteria([Defaults::LANGUAGE_SYSTEM]), Context::createDefaultContext())
            ->first();

        static::assertEquals('Deutsch', $lang->getName());
    }

    public function testSwitchDefaultCurrencyWithNewCurrency(): void
    {
        $this->shopConfigurator->setDefaultCurrency('RUB');

        /** @var EntityRepository $langRepo */
        $langRepo = $this->getContainer()->get('currency.repository');

        /** @var CurrencyEntity $currency */
        $currency = $langRepo->search(new Criteria([Defaults::CURRENCY]), Context::createDefaultContext())
            ->first();

        static::assertEquals('RUB', $currency->getSymbol());
        static::assertEquals('Russian Ruble', $currency->getName());
        static::assertEquals('RUB', $currency->getShortName());
        

        if ($input->getOption('shop-currency')) {
            if (!$input->getOption('no-interaction')) {
                if (!$output->confirm('Changing the shops default currency after the fact can be destructive. Are you sure you want to continue', false)) {
                    $output->writeln('Aborting due to user input');

                    return (int) Command::SUCCESS;
                }
            }

            $this->shopConfigurator->setDefaultCurrency($input->getOption('shop-currency'));
            $output->writeln('Successfully changed shop default currency');
            $output->writeln('');
        }

        $this->cacheClearer->clear();

        return (int) Command::SUCCESS;
    }
}

    public function updateShop(array $shop, Connection $connection): void
    {
        if (empty($shop['locale']) || empty($shop['host'])) {
            throw new \RuntimeException('Please fill in all required fields. (shop configuration)');
        }

        $shopConfigurator = new ShopConfigurator($connection);
        $shopConfigurator->updateBasicInformation($shop['name'], $shop['email']);
        $shopConfigurator->setDefaultLanguage($shop['locale']);
        $shopConfigurator->setDefaultCurrency($shop['currency']);

        $this->deleteAllSalesChannelCurrencies($connection);

        $newSalesChannelId = Uuid::randomBytes();
        $this->createSalesChannel($newSalesChannelId, $shop, $connection);
        $this->createSalesChannelDomain($newSalesChannelId, $shop, $connection);
    }

    /** * @param Shop $shop */