在开玩笑测试后杀死或关闭 apollo-server 上的 websocket

Question

我想知道如何在 jest 测试后关闭 websocket？

目前我有这个：

packages.json

"scripts": {
    "test": "jest --watchAll"
  },
  "jest": {
    "globalSetup": "./tests/jest/globalSetup.js",
    "globalTeardown": "./tests/jest/globalTeardown.js"
  },

server.js

...
const server = new ApolloServer({
    typeDefs,
    resolvers,
    context(request) {
        return {
            prisma,
            request,
        }
    },
})

export { server as default }

globalSetup.js

require("@babel/register")

const server = require("../../server").default

// console.log(server)
module.exports = async () => {
    global.httpServer = await server.listen({ port: 4000 })
}

globalTeardown.js

module.exports = async () => {
    console.log("stop") // Show stop in the console
    await global.httpServer.stop
}

我启动这个命令：

npm 运行测试

测试已执行，但在手表上，如果我修改一个测试，我会出现此错误：

Error: listen EADDRINUSE: address already in use :::4000
    at Server.setupListenHandle [as _listen2] (net.js:1313:16)
    at listenInCluster (net.js:1361:12)
    at Server.listen (net.js:1449:7)
    at /Users/jeremiechazelle/Sites/project/server/node_modules/apollo-server/src/index.ts:128:18
    at new Promise (<anonymous>)
    at ApolloServer.<anonymous> (/Users/jeremiechazelle/Sites/project/server/node_modules/apollo-server/src/index.ts:123:11)
    at Generator.next (<anonymous>)
    at /Users/jeremiechazelle/Sites/project/server/node_modules/apollo-server/dist/index.js:18:71
    at new Promise (<anonymous>)
    at __awaiter (/Users/jeremiechazelle/Sites/project/server/node_modules/apollo-server/dist/index.js:14:12)
Emitted 'error' event on WebSocketServer instance at:
    at Server.emit (events.js:316:20)
    at emitErrorNT (net.js:1340:8)
    at processTicksAndRejections (internal/process/task_queues.js:84:21) {
  code: 'EADDRINUSE',
  errno: -48,
  syscall: 'listen',
  address: '::',
  port: 4000
}

测试执行后，我查看端口 4000，使用此命令：lsof -i:4000，我总是看到：

端口未关闭...

Answer 1

server.listen returns 解析为 ServerInfo 对象的 Promise

export interface ServerInfo {
  address: string;
  family: string;
  url: string;
  subscriptionsUrl: string;
  port: number | string;
  subscriptionsPath: string;
  server: http.Server;
}

所以你需要调用global.httpServer.server.close()。

在开玩笑测试后杀死或关闭 apollo-server 上的 websocket

Kill or close websocket on apollo-server after jest test

apollo

jestjs

apollo-server