Angular 6测试覆盖率报告中的错误获取功能，分支，行和语句未定义

Question

我在运行时收到此报告。测试用例运行正常，但覆盖率报告未显示正确的详细信息

1. 所有文件计数为0

2. 语句，行，功能和分支未定义

   ng测试库--code-coverage

Karma.conf看起来像这样。

// 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-teamcity-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: {
      includeAllSources: true,
      dir: require('path').join(__dirname, './coverage'),
      //dir: require('path').join(__dirname, './coverage'),
      //dir: require('path').join('./coverage'),
      reports: ['html', 'lcovonly'],
      fixWebpackSourcePaths: true
    },
    reporters: ['progress', 'kjhtml'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false,
    files: [
      { pattern: './src/test.ts', watched: false }
    ]
  });
};

我们非常感谢您的帮助。