Node.js Webpack dev server：一旦服务器运行，就会为触发器命令提供钩子或机制

在我的开发工作流程中，我打开了两个终端窗口，在一个我的

npm启动任务中运行，一旦服务器在第二个窗口中运行，我就运行cucumberjs的功能测试套件，这正如我预期的那样工作。但我的问题是，在我的CI环境中，我需要在单个进程中运行它。我一直在尝试：

npm开始| cucumberjs——需要测试/功能性/——编译器js:babel寄存器测试/功能性/

问题是任务npm start需要一段时间才能运行，同时cucumber任务尝试访问localhost:3000（webpack dev服务器运行时的url），但服务器尚未就绪，测试失败

那么，我该如何处理这个问题呢？

项目：

package.json

  ...

  "scripts": {
    "start": "npm run stubs & webpack-dev-server",
    "dev": "npm start -- --open",
    "stubs": "stubby -w -d stubs/fakeserver.yml -s 5000",
    "tdd": "cross-env NODE_PATH=./src jest --watch --verbose",
    "test": "cross-env NODE_PATH=./src jest --coverage --verbose",
    "test:functional": "cucumberjs --require test/functional/ --compiler js:babel-register test/functional/",
    //I want in the test:functional-ci task run the npm start and once that is serving the project, run npm run test:functional task
    "test:functional-ci": "cross-env NODE_ENV=staging npm run test:functional",
    "test-debug": "cross-env NODE_PATH=./src node --inspect --inspect-brk node_modules/.bin/jest -i",
    "build": "webpack",
    "check-coverage": "npm test | http-server -so -p 9000 coverage/lcov-report"
  },

  ...

"scripts": {
    "start": "sh -c \"npm run stubs & webpack-dev-server\"",
    ...
    "test:functional": "cucumberjs --require test/functional/ --compiler 
    ...

webpack.config.js

module.exports = {
    entry: [
      'core-js/shim',
      'babel-polyfill',
      'angular',
      './src/index.js'
    ],
    output: {
        path: 'dist',
        filename: 'index.bundle.js'
    },
    module: {
        loaders: [
        { test: /\.js$/, exclude: /node_modules/, loader: 'babel-loader'},
        { test: /\.css$/, loader: 'style-loader!css-loader' },
        { test: /\.eot(\?v=\d+\.\d+\.\d+)?$/, loader: "file" },
        { test: /\.(html)$/, loader: 'html-loader' },
        { test: /\.(woff|woff2)$/, loader:"url?prefix=font/&limit=5000" },
        { test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/, loader: "url?limit=10000&mimetype=application/octet-stream" },
        { test: /\.svg(\?v=\d+\.\d+\.\d+)?$/, loader: "url?limit=10000&mimetype=image/svg+xml" }]
    },
    cache: true,
    devtool: 'eval-source-map',
    devServer: {
        filename: "index.bundle.js",
        contentBase: "./src",
        port: 3000,
        watch: true,
        publicPath: "/",
        historyApiFallback: true,
        stats: {
            colors: true,
            chunks: false
        }
    }
};

最后，我不能用一些网页选项直接解决我的问题。在我的CI系统上，我运行以下操作：

package.json

  ...

  "scripts": {
    "start": "npm run stubs & webpack-dev-server",
    "dev": "npm start -- --open",
    "stubs": "stubby -w -d stubs/fakeserver.yml -s 5000",
    "tdd": "cross-env NODE_PATH=./src jest --watch --verbose",
    "test": "cross-env NODE_PATH=./src jest --coverage --verbose",
    "test:functional": "cucumberjs --require test/functional/ --compiler js:babel-register test/functional/",
    //I want in the test:functional-ci task run the npm start and once that is serving the project, run npm run test:functional task
    "test:functional-ci": "cross-env NODE_ENV=staging npm run test:functional",
    "test-debug": "cross-env NODE_PATH=./src node --inspect --inspect-brk node_modules/.bin/jest -i",
    "build": "webpack",
    "check-coverage": "npm test | http-server -so -p 9000 coverage/lcov-report"
  },

  ...

"scripts": {
    "start": "sh -c \"npm run stubs & webpack-dev-server\"",
    ...
    "test:functional": "cucumberjs --require test/functional/ --compiler 
    ...

.travis.yml

before_script: npm start & sleep 7
script: npm run test:functional

因此，当我运行
npm start&sleep 7
时，我会给
npm start
7秒钟，让任务完成任务，然后运行
npm run test:functional
脚本

这是我的回购协议：
这是CI travis日志中的结果：
最后，我无法通过一些网页选项直接解决我的问题。在我的CI系统上，我运行以下操作：

package.json

  ...

  "scripts": {
    "start": "npm run stubs & webpack-dev-server",
    "dev": "npm start -- --open",
    "stubs": "stubby -w -d stubs/fakeserver.yml -s 5000",
    "tdd": "cross-env NODE_PATH=./src jest --watch --verbose",
    "test": "cross-env NODE_PATH=./src jest --coverage --verbose",
    "test:functional": "cucumberjs --require test/functional/ --compiler js:babel-register test/functional/",
    //I want in the test:functional-ci task run the npm start and once that is serving the project, run npm run test:functional task
    "test:functional-ci": "cross-env NODE_ENV=staging npm run test:functional",
    "test-debug": "cross-env NODE_PATH=./src node --inspect --inspect-brk node_modules/.bin/jest -i",
    "build": "webpack",
    "check-coverage": "npm test | http-server -so -p 9000 coverage/lcov-report"
  },

  ...

"scripts": {
    "start": "sh -c \"npm run stubs & webpack-dev-server\"",
    ...
    "test:functional": "cucumberjs --require test/functional/ --compiler 
    ...

.travis.yml

before_script: npm start & sleep 7
script: npm run test:functional

因此，当我运行
npm start&sleep 7
时，我会给
npm start
7秒钟，让任务完成任务，然后运行
npm run test:functional
脚本

这是我的回购协议：
这是CI travis日志中的结果：
你不能在cucumber任务中添加一个逻辑来检查服务器是否正在运行（并重复检查5次，每分钟一次），并且只有在服务器确实在运行时才继续吗？你不能在cucumber任务中添加一个逻辑来检查服务器是否正在运行吗（并反复检查，比如说5次，每分钟检查一次），只有在服务器确实在运行时才继续？