赛普拉斯 CI：错误：连接 ECONNREFUSED 127.0.0.1:3000

Question

对于一个小项目，我正在尝试针对 Nodejs 应用程序运行 Cypress 测试，该应用程序是我从 GitHub 中获取的示例。此外，我想在 GitLab CI/CD 中执行测试。我的 yml 文件看起来像这样：

stages:
 - build
 - publish # (consumer only)
 - can-i-deploy
 - deploy
 - tag

pact-test:
  image: $CI_REGISTRY_IMAGE
  stage: build
  script:
    - npm ci
    - npm run start &
    - npm run cypress
  artifacts:
    paths:
      - pacts

这里是我作为示例的应用程序的参考，这里是Cypress测试。

我得到的错误是这样的：

 "before each" hook for "displays product item":
     CypressError: `cy.visit()` failed trying to load:
http://localhost:3000/products/09
We attempted to make an http request to this URL but the request failed without a response.
We received this error at the network level:
  > Error: connect ECONNREFUSED 127.0.0.1:3000
Common situations why this would fail:
  - you don't have internet access
  - you forgot to run / boot your web server
  - your web server isn't accessible
  - you have weird network configuration settings on your computer
Because this error occurred during a `before each` hook we are skipping the remaining tests in the current suite: `product page`

更新 运行 sleep 和curl 命令后，结果如下：

$ npm run start &
$ sleep 5
> [email protected] start /builds/poc-consumer
> react-scripts --openssl-legacy-provider start
node: bad option: --openssl-legacy-provider
npm ERR! code ELIFECYCLE
npm ERR! errno 9
npm ERR! [email protected] start: `react-scripts --openssl-legacy-provider start`
npm ERR! Exit status 9
npm ERR! 
npm ERR! Failed at the [email protected] start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2022-08-18T13_20_15_778Z-debug.log
$ curl http://localhost:3000/products/09
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (7) Failed to connect to localhost port 3000: Connection refused

Answer 1

错误本身已经提供了最可能的原因：

• 您没有互联网接入
• 您忘记运行/启动您的网络服务器
• 您的网络服务器无法访问
• 您的计算机上有奇怪的网络配置设置

在您的情况下，您似乎没有启动服务器。

查看您的 CI 脚本，您正在启动服务器，然后立即尝试运行 cypress 测试。服务器可能没有这么快启动。试试这个：

- npm run start &
- sleep 5
- npm run cypress

这将迫使

npm run cypress

在开始之前等待 5 秒。

Answer 2

你能提供端口吗

 - name: 🌳 Cypress run
   uses: cypress-io/github-action@v4
   with:
     start: npm run xx
     wait-on: "http://localhost:8811"

希望能帮到你

Answer 3

发现问题了！

问题是 React 的一个选项，npm 不支持该选项：

--openssl-legacy-provider

删除它，我能够卷曲节点服务器并运行 cypress 测试

Answer 4

在运行 cypress 之前，请确保您的服务器（通常是本地开发服务器）正在运行。