Node.js Mocha节点HTTP测试-套接字挂起_Node.js_Sockets_Promise_Mocha.js

Node.js Mocha节点HTTP测试-套接字挂起

node.js sockets

Node.js Mocha节点HTTP测试-套接字挂起,node.js,sockets,promise,mocha.js,Node.js,Sockets,Promise,Mocha.js,我正在尝试学习使用node进行测试，因为我正在使用Mocha框架我试图向express服务器发出get请求，执行两个数字的计算，并将其作为{result:sum}结构化对象返回然而，我得到一个未处理的Promisejection警告，原因是：套接字挂起。我已经做了一些研究，到目前为止，我的结论是，当客户端在服务器发送响应之前停止侦听请求发送的响应时，会在服务器上抛出错误。（如果有错，我不介意澄清）这是我的摩卡咖啡测试： const expect = require("chai").exp

我正在尝试学习使用node进行测试，因为我正在使用Mocha框架

我试图向express服务器发出get请求，执行两个数字的计算，并将其作为

{result:sum}

结构化对象返回

然而，我得到一个未处理的Promisejection警告，原因是：套接字挂起。我已经做了一些研究，到目前为止，我的结论是，当客户端在服务器发送响应之前停止侦听请求发送的响应时，会在服务器上抛出错误。（如果有错，我不介意澄清）

这是我的摩卡咖啡测试：

const expect = require("chai").expect
const PORT = require("../server").PORT
const app = require("../server").app
const fetch = require("node-fetch")

const BASE_URL = `https://localhost:${PORT}/api/calc/`
let httpServer;
describe("testing endpoints for calculator Rest API", function () {

    before("starting the server..", function(done) {
        httpServer = app.listen(PORT)
        console.log("server is started")
        done()
    })

     describe("testing the add endpoint", function(){
         console.log("testing the API now!")
         it("add endpoints result should evaluate to 10", function(){
            fetch(`${BASE_URL}add/5/5`)
            .then(response => expect(response.result).to.be(10))
         })
     })
     after("shutting down the server..", function(){
        httpServer.close()  
     })

})

这是我的stacktrace：

jonas@jonas:~/Desktop/testdemo1$ mocha
testing the API now!


  testing endpoints for calculator Rest API
starting server..
server started
    testing the add endpoint
      ✓ add endpoints result should evaluate to 10
(node:1949) UnhandledPromiseRejectionWarning: FetchError: request to https://localhost:1234/api/calc/add/5/5 failed, reason: socket hang up
    at ClientRequest.<anonymous> (/home/jonas/Desktop/testdemo1/node_modules/node-fetch/lib/index.js:1444:11)
    at emitOne (events.js:116:13)
    at ClientRequest.emit (events.js:211:7)
    at TLSSocket.socketErrorListener (_http_client.js:387:9)
    at emitOne (events.js:116:13)
    at TLSSocket.emit (events.js:211:7)
    at emitErrorNT (internal/streams/destroy.js:64:8)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)
(node:1949) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:1949) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.


  1 passing (55ms)

  ✓ add endpoints result should evaluate to 10
(node:27175) UnhandledPromiseRejectionWarning: FetchError: request to https://localhost:1234/api/calc/add/5/5 failed, reason: socket hang up
    at ClientRequest.<anonymous> (/home/jonas/Desktop/testdemo1/node_modules/node-fetch/lib/index.js:1444:11)
    at emitOne (events.js:116:13)
    at ClientRequest.emit (events.js:211:7)
    at TLSSocket.socketErrorListener (_http_client.js:387:9)
    at emitOne (events.js:116:13)
    at TLSSocket.emit (events.js:211:7)
    at emitErrorNT (internal/streams/destroy.js:64:8)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)
(node:27175) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:27175) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

提供stacktrace：

jonas@jonas:~/Desktop/testdemo1$ mocha
testing the API now!


  testing endpoints for calculator Rest API
starting server..
server started
    testing the add endpoint
      ✓ add endpoints result should evaluate to 10
(node:1949) UnhandledPromiseRejectionWarning: FetchError: request to https://localhost:1234/api/calc/add/5/5 failed, reason: socket hang up
    at ClientRequest.<anonymous> (/home/jonas/Desktop/testdemo1/node_modules/node-fetch/lib/index.js:1444:11)
    at emitOne (events.js:116:13)
    at ClientRequest.emit (events.js:211:7)
    at TLSSocket.socketErrorListener (_http_client.js:387:9)
    at emitOne (events.js:116:13)
    at TLSSocket.emit (events.js:211:7)
    at emitErrorNT (internal/streams/destroy.js:64:8)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)
(node:1949) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:1949) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.


  1 passing (55ms)

  ✓ add endpoints result should evaluate to 10
(node:27175) UnhandledPromiseRejectionWarning: FetchError: request to https://localhost:1234/api/calc/add/5/5 failed, reason: socket hang up
    at ClientRequest.<anonymous> (/home/jonas/Desktop/testdemo1/node_modules/node-fetch/lib/index.js:1444:11)
    at emitOne (events.js:116:13)
    at ClientRequest.emit (events.js:211:7)
    at TLSSocket.socketErrorListener (_http_client.js:387:9)
    at emitOne (events.js:116:13)
    at TLSSocket.emit (events.js:211:7)
    at emitErrorNT (internal/streams/destroy.js:64:8)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickCallback (internal/process/next_tick.js:180:9)
(node:27175) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:27175) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

✓ 添加端点结果应计算为10
（节点：27175）未经处理的PromisejectionWarning:FetchError:请求https://localhost:1234/api/calc/add/5/5 失败，原因：套接字挂起
在ClientRequest。（/home/jonas/Desktop/testdemo1/node_modules/node fetch/lib/index.js:1444:11）
在emitOne（events.js:116:13）
在ClientRequest.emit（events.js:211:7）
在TLSSocket.socketErrorListener（_http_client.js:387:9）
在emitOne（events.js:116:13）
在TLSSocket.emit（events.js:211:7）
发出错误时（内部/streams/destroy.js:64:8）
at _combinedTickCallback（内部/流程/下一步_tick.js:138:11）
在进程中。_tick回调（内部/process/next_tick.js:180:9）
（节点：27175）未处理的PromisejectionWarning:未处理的承诺拒绝。此错误源于在没有catch块的异步函数中抛出，或者拒绝未使用.catch（）处理的承诺。（拒绝id:1）
（节点：27175）[DEP0018]弃用警告：未处理的承诺拒绝已弃用。将来，未处理的承诺拒绝将使用非零退出代码终止Node.js进程。

您必须在测试中调用

done（）。done
函数被传递给it
块中使用的回调函数。此外，您应该确保始终捕捉错误
异步操作完成后，您需要调用done
，当前您正在调用done
，http服务器尚未启动，并且在关闭http服务器时从未调用done。您只需将done
传递给所有异步回调处理程序
before("starting the server..", function (done) {
    httpServer = app.listen(PORT, done) // <- here
})

describe("testing the add endpoint", function () {
    console.log("testing the API now!")
    it("add endpoints result should evaluate to 10", function (done) {
        fetch(`${BASE_URL}add/5/5`)
            .then(response => {
                expect(response.result).to.be(10)
            })
            .then(done) // <- here
            .catch(done) // <- here
    })
})
after("shutting down the server..", function (done) {
    httpServer.close(done) // <- here
})

如果这不能解决您的问题，那么it函数中以done（）结尾的/add/5/5
的路径可能会出现问题，这很遗憾-无法解决警告：（我有一个完全相同的问题…@Rouz如果您找到解决方案，请发布为答案：）有趣的是，对我来说这不是确定性的。它在随机调用时失败。有时它根本不会失败。我正在尝试创建一个集成测试，所以这真的让我很难受……天哪，我确实解决了我的问题，但它肯定不是你现在遇到的问题。我甚至不认为这是一个值得回答的问题，因为这个问题对我的代码库来说是超特定的（服务器在集成测试的中间重新启动）。很抱歉mate@Rouz哈哈，没关系。不过恭喜你解决了这个问题。我将继续修复：）您无法调用。然后在it函数上？@JonasGrønbek然后
是获取
承诺链的一部分，它没有附加到它。hotzinger it（）不会返回承诺，我已经尝试了您的解决方案，它运行了，但显然没有解决警告问题。我认为您在阅读我提供的代码时遇到了问题。所以我会把它做成一条线…我已经试过了，但它不能解决它，伙计。如果你想解开这个谜，我可以去github。对不起，事实并非如此。
fetch(`${BASE_URL}add/5/5`).then(response => expect(response.result).to.be(10)).then(done).catch(done)