Provide a clear and easy way to do an integration test

[maxime-rainville]

You can define a schema in YML right now, but you don't have a quick way to test the outcome and the results you'll get out of your schema.

The closest example we have right now is in IntegrationTest.php. Even then, there's a lot of boiler plate to get through to do simple queries.

In a perfect world, you would have a straight forward way of saying, "given I run this query, against this schema, I assert I will receive these results."

Acceptance criteria

• There's clear guidance for developers who want to write integration test for their GraphQL schema.
• There's a simple to use API that makes this process easy.

[GuySartorelli]

Isn't this what https://github.com/silverstripe/silverstripe-graphql-devtools is for?

[maxime-rainville]

graphql-devtools doesn't let you run this as PHPUnit test.

I've got an example of what I'm talking about on my AnyField GraphQL test.

Basically, what I would like to have is an easy way to assert that when you run a specific GraphQL query you get a specific results.