loadMediaFile example

$paymentMethods = $paymentMethodRepository->search($criteria, $this->context)->getEntities();

        static::assertCount(2, $paymentMethods);

        /** @var PaymentMethodEntity|null $paymentMethod */
        $paymentMethod = $paymentMethods->filterByProperty('name', 'The app payment method')->first();
        static::assertNotNull($paymentMethod);
        static::assertSame('The app payment method', $paymentMethod->getName());
        static::assertSame('handler_app_test_mymethod', $paymentMethod->getFormattedHandlerIdentifier());
        static::assertNotNull($paymentMethod->getMediaId());
        $fileLoader = $this->getContainer()->get(FileLoader::class);
        static::assertNotEmpty($fileLoader->loadMediaFile($paymentMethod->getMediaId(), $this->context));
        $appPaymentMethod = $paymentMethod->getAppPaymentMethod();
        static::assertNotNull($appPaymentMethod);
        static::assertSame('test', $appPaymentMethod->getAppName());
        static::assertSame('myMethod', $appPaymentMethod->getIdentifier());
        static::assertSame('https://payment.app/payment/process', $appPaymentMethod->getPayUrl());
        static::assertSame('https://payment.app/payment/finalize', $appPaymentMethod->getFinalizeUrl());
    }

    private function assertDefaultCmsBlocks(string $appId): void
    {
        /** @var EntityRepository $cmsBlockRepository */
        

public function testLoadMediaFile(): void
    {
        $context = Context::createDefaultContext();
        $blob = \file_get_contents(self::TEST_IMAGE);
        static::assertIsString($blob);
        $mediaFile = $this->fileFetcher->fetchBlob($blob, 'png', 'image/png');
        $mediaId = Uuid::randomHex();
        $this->mediaRepository->create([['id' => $mediaId]], $context);
        $this->fileSaver->persistFileToMedia($mediaFile, $mediaId . '.png', $mediaId, $context);

        static::assertSame($blob, $this->fileLoader->loadMediaFile($mediaId, $context));

        $this->mediaRepository->delete([['id' => $mediaId]], $context);
    }

    public function testLoadMediaFileStream(): void
    {
        $context = Context::createDefaultContext();
        $blob = \file_get_contents(self::TEST_IMAGE);
        static::assertIsString($blob);
        $mediaFile = $this->fileFetcher->fetchBlob($blob, 'png', 'image/png');
        $mediaId = Uuid::randomHex();
        

if (!$mediaId) {
            $mediaId = $this->createMediaInFolder($folder ?? '', $context, $private);
        }

        $this->fileSaver->persistFileToMedia($mediaFile, $filename, $mediaId, $context);

        return $mediaId;
    }

    public function loadFile(string $mediaId, Context $context): string
    {
        return $this->fileLoader->loadMediaFile($mediaId, $context);
    }

    public function loadFileStream(string $mediaId, Context $context): StreamInterface
    {
        return $this->fileLoader->loadMediaFileStream($mediaId, $context);
    }

    public function fetchFile(Request $request, ?string $tempFile = null): MediaFile
    {
        if ($tempFile === null) {
            $tempFile = tempnam(sys_get_temp_dir(), '');
        }