CsvFileLoader example

use PHPUnit\Framework\TestCase;
use Symfony\Component\Config\Resource\FileResource;
use Symfony\Component\Translation\Exception\InvalidResourceException;
use Symfony\Component\Translation\Exception\NotFoundResourceException;
use Symfony\Component\Translation\Loader\CsvFileLoader;

class CsvFileLoaderTest extends TestCase
{
    public function testLoad()
    {
        $loader = new CsvFileLoader();
        $resource = __DIR__.'/../fixtures/resources.csv';
        $catalogue = $loader->load($resource, 'en', 'domain1');

        $this->assertEquals(['foo' => 'bar'], $catalogue->all('domain1'));
        $this->assertEquals('en', $catalogue->getLocale());
        $this->assertEquals([new FileResource($resource)], $catalogue->getResources());
    }

    public function testLoadDoesNothingIfEmpty()
    {
        $loader = new CsvFileLoader();