Testing Guzzle request and PDF converter


This Content is from Stack Overflow. Question asked by Zeyukan Ich’

I’m pretty new into testing things, and I was wondering how I could test such code or even if it’s valuable to test this.

this is what my code looks like :

    public function convert(string $urlToConvert, string $path, array $options = []): void
        try {
            $result = $this->getClient()->post(
                sprintf('%s/%s', $this->config->getEndpoint(), self::GOTENBERG_CHROMIUM_ENDPOINT),
                    'multipart' => [
                        ['name' => 'url', 'contents' => $urlToConvert],
                        ['name' => 'emulatedMediaType', 'contents' => 'screen'],

            $directory = $this->filesystem->getDirectoryWrite(DirectoryList::MEDIA);
            $directory->writeFile($path, $result->getBody());
        } catch (Exception | GuzzleException $e) {
            $this->logger->error($e, ['context' => 'm2-gotenberg']);

            throw new GotenbergConvertException(__('Failed converting PDF'), $e);

The getClient() returns an instance of a GuzzleHttp.

The process is the following :

  • Do a request on an endpoint with the URL
  • Get the response body which is the converted PDF
  • Create a file with the content given by the response

I don’t feel like I could test anything, or a really small amount of the code.

About the lines creating the files, this is the done by the framework I’m using

The only thing I see is to do an integration test, and fetching the endpoint to create a real pdf, then delete it.

Can someone clarify this for me or give me some advices? When using framework I have troubles on what to test to avoid testing the implementation of my code


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