describe('apollo-server-fastify', () => {
  let server: ApolloServer;
  let httpServer: http.Server;
  let app: FastifyInstance;

  testApolloServer(
    async options => {
      server = new ApolloServer(options);
      app = fastify();
      app.register(server.createHandler());
      await app.listen(port);
      return createServerInfo(server, app.server);
    },
    async () => {
      if (server) await server.stop();
      if (app) await new Promise(resolve => app.close(() => resolve()));
      if (httpServer && httpServer.listening) await httpServer.close();
    },
  );
});

    return async (
      app: FastifyInstance<Server, IncomingMessage, OutgoingMessage>,
    ) => {
      await promiseWillStart;

      if (!disableHealthCheck) {
        app.get('/.well-known/apollo/server-health', async (req, res) => {
          // Response follows https://tools.ietf.org/html/draft-inadarei-api-health-check-01
          res.type('application/health+json');

          if (onHealthCheck) {
            try {
              await onHealthCheck(req);
              res.send(stringifyHealthCheck({ status: 'pass' }));
            } catch (e) {
              res.status(503).send(stringifyHealthCheck({ status: 'fail' }));
            }
          } else {
            res.send(stringifyHealthCheck({ status: 'pass' }));
          }
        });
      }

      app.register(
        async instance => {
          instance.register(require('fastify-accepts'));

          if (cors === true) {
            instance.register(require('fastify-cors'));
          } else if (cors !== false) {
            instance.register(require('fastify-cors'), cors);
          }

          instance.setNotFoundHandler((_request, reply) => {
            reply.code(405);
            reply.header('allow', 'GET, POST');
            reply.send();
          });

          const beforeHandlers = [
            (
              req: FastifyRequest<IncomingMessage>,
              reply: FastifyReply<OutgoingMessage>,
              done: () => void,
            ) => {
              // Note: if you enable playground in production and expect to be able to see your
              // schema, you'll need to manually specify `introspection: true` in the
              // ApolloServer constructor; by default, the introspection query is only
              // enabled in dev.
              if (this.playgroundOptions && req.req.method === 'GET') {
                // perform more expensive content-type check only if necessary
                const accept = (req as any).accepts() as Accepts;
                const types = accept.types() as string[];
                const prefersHTML =
                  types.find(
                    (x: string) =>
                      x === 'text/html' || x === 'application/json',
                  ) === 'text/html';

                if (prefersHTML) {
                  const playgroundRenderPageOptions: PlaygroundRenderPageOptions = {
                    endpoint: this.graphqlPath,
                    subscriptionEndpoint: this.subscriptionsPath,
                    ...this.playgroundOptions,
                  };
                  reply.type('text/html');
                  const playground = renderPlaygroundPage(
                    playgroundRenderPageOptions,
                  );
                  reply.send(playground);
                  return;
                }
              }
              done();
            },
          ];

          if (typeof processFileUploads === 'function' && this.uploadsConfig) {
            instance.addContentTypeParser(
              'multipart',
              (
                request: IncomingMessage,
                done: (err: Error | null, body?: any) => void,
              ) => {
                (request as any)[kMultipart] = true;
                done(null);
              },
            );
            beforeHandlers.push(fileUploadMiddleware(this.uploadsConfig, this));
          }

          instance.route({
            method: ['GET', 'POST'],
            url: '/',
            beforeHandler: beforeHandlers,
            handler: await graphqlFastify(this.graphQLServerOptions.bind(this)),
          });
        },
        {
          prefix: this.graphqlPath,
//.........这里部分代码省略.........

 async options => {
   server = new ApolloServer(options);
   app = fastify();
   app.register(server.createHandler());
   await app.listen(port);
   return createServerInfo(server, app.server);
 },

  async function createServer(
    serverOptions: Config,
    options: Partial<ServerRegistration> = {},
  ) {
    server = new ApolloServer(serverOptions);
    app = fastify();

    app.register(server.createHandler(options));
    await app.listen(port);

    return createServerInfo(server, app.server);
  }

 if (app) await new Promise(resolve => app.close(() => resolve()));