Example of integration testing a GraphQL schema

test.js

import { schema } from '../my-schema';

// Docs for `graphql` function
// http://graphql.org/graphql-js/graphql/#graphql
import { graphql } from 'graphql';

it('executes a query that looks up some data', async () => {
  // optionally create some fake context (i.e. data connectors)
  const myFakeContext = { restConnectionOne: { findOne: jest.fn() } };

  const expectedResult = {...}; 
  
  const result = await graphql(schema, query, {}, myFakeContext);
  
  expect(result.data).toEqual(expectedResult);
  expect(myFakeContext.restConnectionOne.findOne).toBeCalledWith({ id: 1 });
});