Testing your query

Initially we were using overblog/graphiql-bundle but since it's hard keep it in sync with major symfony release we are moving to usage of open-source graphql clients.

The most popular is graphiql which can be installed as chrome extension, or you can go with altair and install it as an app.

After installation enter url of your graphql endpoint (the default one if you're using Symfony CLI will be https://127.0.0.1:8000/graphql). And that's it, happy developing.