angular modulewise 单元测试用例覆盖率

Question

我遇到了一个问题，需要帮助。我正处于编写单元测试用例的早期阶段。我需要特定于代码覆盖率模块。目前我正在获取特定于文件夹的内容。不考虑内部（递归）文件夹。是否有任何选项可以获得特定于模块的代码覆盖率？我也探索了一些 karma 库，但没有运气。

Karma.conf.ts

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'),
      require('karma-html-reporter')
    ],
    client:{
      clearContext: false // leave Jasmine Spec Runner output visible in browser
    },
    coverageIstanbulReporter: {
      dir: require('path').join(__dirname, 'coverage'), 
      // reports: [ 'html', 'lcovonly','text-summary','clover','cobertura','json-summary','json','lcov','teamcity','text-lcov','text'],
      reports: [ 'html', 'lcovonly'],
      fixWebpackSourcePaths: true
    },
    
    reporters: ['progress', 'kjhtml','html'],
    htmlReporter: {
      outputDir: 'unit_test_results',
      templatePath: null,
      focusOnFailures: true,
      namedFiles: true,
      pageTitle: null,
      urlFriendlyName: false,
      reportName: 'test_case_summary_' + new Date().toLocaleDateString()        
    },
    files: [
      { pattern: './src/test.ts', watched: true },
      {pattern: './src/assets/**/*.png'},
      {pattern: './src/assets/**/**/*.png'},
      {pattern: './src/assets/**/*.css'},
      {pattern: './src/assets/**/**/*.css'},
      { pattern: './node_modules/@angular/material/prebuilt-themes/indigo-pink.css' },
      { pattern: './node_modules/bootstrap/dist/css/bootstrap.min.css' },
      { pattern: './node_modules/font-awesome/css/font-awesome.min.css' },
      { pattern: './src/styles.css' },

    ],
    captureTimeout :60000,
    browserNoActivityTimeout :60000,
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false
  });
};

test.ts

import 'zone.js/dist/long-stack-trace-zone';
import 'zone.js/dist/proxy.js';
import 'zone.js/dist/sync-test';
import 'zone.js/dist/jasmine-patch';
import 'zone.js/dist/async-test';
import 'zone.js/dist/fake-async-test';
import { getTestBed } from '@angular/core/testing';
import {
    BrowserDynamicTestingModule,
    platformBrowserDynamicTesting
} from '@angular/platform-browser-dynamic/testing';

// Unfortunately there's no typing for the `__karma__` variable. Just declare it as any.
declare const __karma__: any;
declare const require: any;

// Prevent Karma from running prematurely.
__karma__.loaded = function () { };

getTestBed().initTestEnvironment(
    BrowserDynamicTestingModule,
    platformBrowserDynamicTesting()
);


var specFiles = {
  aa-test: require.context('./app/aa-test', true, /\.spec\.ts$/),
}

for (var file in specFiles) {
    console.log('test cases ' + file, specFiles[file].keys());
    specFiles[file].keys().map(specFiles[file]);
}

__karma__.start();

文件夹结构：