Function requestContextMiddleware

spec/ParseGraphQLServer.spec.js:601–604

(req, res, next)

      describe('Context', () => {
        it('should support dependency injection on graphql  api', async () => {
          const requestContextMiddleware = (req, res, next) => {
            req.config.aCustomController = 'aCustomController';
            next();
          };

          let called;
          const parseServer = await reconfigureServer({ requestContextMiddleware });