validateFileName example

/** * @throws MediaException */
    public function persistFileToMedia(
        MediaFile $mediaFile,
        string $destination,
        string $mediaId,
        Context $context
    ): void {
        $currentMedia = $this->findMediaById($mediaId, $context);
        $destination = $this->validateFileName($destination);
        $this->ensureFileNameIsUnique(
            $currentMedia,
            $destination,
            $mediaFile->getFileExtension(),
            $context
        );

        $this->validateFileExtension($mediaFile, $mediaId, $currentMedia->isPrivate());

        $this->removeOldMediaData($currentMedia, $context);

        

public function loadMediaFileStream(string $mediaId, Context $context): StreamInterface
    {
        $media = $this->findMediaById($mediaId, $context);
        $resource = $this->getFileSystem($media)->readStream($this->getFilePath($media));

        return $this->streamFactory->createStreamFromResource($resource);
    }

    private function getFilePath(MediaEntity $media): string
    {
        $this->fileNameValidator->validateFileName($media->getFileName() ?: '');

        return $this->urlGenerator->getRelativeMediaUrl($media);
    }

    private function getFileSystem(MediaEntity $media): FilesystemOperator
    {
        if ($media->isPrivate()) {
            return $this->filesystemPrivate;
        }

        return $this->filesystemPublic;
    }

        return $c;
    }

    public function testValidateFileNameThrowsExceptionIfFileNameIsEmpty(): void
    {
        $this->expectException(MediaException::class);
        $this->expectExceptionMessage('A valid filename must be provided.');

        $validator = new FileNameValidator();
        $validator->validateFileName('');
    }

    public function testValidateFileNameThrowsIfFileNameIsOnlyDots(): void
    {
        $this->expectException(MediaException::class);
        $this->expectExceptionMessage('Filename must not start with a "." (dot).');

        $validator = new FileNameValidator();
        $validator->validateFileName('..');
    }