angular - ng test angular 7 无法识别窗口对象中的用户定义方法

Question

尝试运行命令 ng test 结果是错误：找不到名称'isEmpty'

方法 'isEmpty' 在 global.ts 中声明为 utils

const _global = (window)

_global.isEmpty = function(...args): boolean {


    for (let i = 0; i < arguments.length; i++) {
        let object = arguments[i];

        if (object == null ||
            object == undefined ||
            (typeof object === 'object' && Object.keys(object).length == 0) ||
            (typeof object === 'string' && object.trim().length == 0))

            return true;
    }

ng serve 在 app-module 中添加了这个文件

但 ng 测试无法识别

角 CLI：7.3.8

节点：10.15.3

角度：7.2.1

业力.conf.js

// Karma configuration file, see link for more information
// https://karma-runner.github.io/1.0/config/configuration-file.html

module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['jasmine', '@angular-devkit/build-angular'],
    plugins: [
      require('karma-jasmine'),
      require('karma-chrome-launcher'),
      require('karma-jasmine-html-reporter'),
      require('karma-coverage-istanbul-reporter'),
      require('@angular-devkit/build-angular/plugins/karma')
    ],
    client: {
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    coverageIstanbulReporter: {
      dir: require('path').join(__dirname, '../coverage'),
      reports: ['html', 'lcovonly', 'text-summary'],
      fixWebpackSourcePaths: true
    },
    reporters: ['progress', 'kjhtml'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false
  });
};

tsconfig.spec.json

{
  "extends": "../tsconfig.json",
  "compilerOptions": {
    "outDir": "../out-tsc/spec",
    "types": [
      "jasmine",
      "node"
    ]
  },
  "files": [
    "test.ts",
    "polyfills.ts"
  ],
  "include": [
    "**/*.spec.ts",
    "**/*.d.ts"
  ]
}

如何解决这个问题呢 ？

标签： angulartestingkarma-runner