如何使用karma,typescript和browserify进行代码覆盖

Question

如何设置karma测试运行器以生成打字稿项目的代码覆盖率报告？

鉴于以下文件夹结构和karma.conf.js文件,我已经在使用karma来运行用TypeScript编写的测试.

我已经与周围的摆弄karma-coverage和remap-istanbul,但没有任何运气呢.如果可能的话,我想在没有任何额外的情况下这样做npm scripts.

.
??? karma.conf.js
??? package.json
??? src
?   ??? add.ts
??? test
?   ??? addSpec.ts
??? tsconfig.json
??? typings
?   ??? globals
?   ??? index.d.ts
??? typings.json

karma.conf.js

var istanbul = require('browserify-istanbul');

module.exports = function(config) {
  config.set({
    basePath: '',
    frameworks: ['mocha', 'chai', 'sinon', 'browserify'],
    files: [
      'test/**/*Spec.ts'
    ],
    exclude: [
    ],
    preprocessors: {
      'test/**/*Spec.ts': ['browserify']
    },
    browserify: {
      debug: true,
      plugin: ['tsify'],
      transform: [
        istanbul({irgnore: ['**/node_modules/**']})
      ]
    },
    reporters: ['progress', 'coverage']
  })
}

更新1:

我通过添加browserify-istanbul设置取得了一些进展.我认为整体指标很好,但源文件视图有点奇怪.

addSpec.ts

import { add } from '../src/add'
const expect = chai.expect

describe('test add module', () => {
  it('should add 2 numbers', () => {
    expect(add(2, 2)).to.be.equal(4)
  })
})

更新2:

直到今天,我还无法找到一种方法来创建一个使用browserify和typescript的"集成"业力设置.不过,我有一个不同的解决方案,对我有用.

karma.conf.js

module.exports = function(config) {
  config.set({
    basePath: '',
    frameworks: ['source-map-support', 'mocha'],
    files: [
      'test/**/*Spec.ts'
    ],
    exclude: [],
    preprocessors: {
      'test/**/*Spec.ts': ['webpack']
    },
    webpack: {
      devtool: 'inline-source-map',
      resolve: {
        extensions: ['', '.ts', '.js']
      },
      module: {
        loaders: [
          { test: /\.ts$/, exclude: /node_modules/, loader: 'ts-loader', query: { compilerOptions: { inlineSourceMap: true }} }
        ],
        postLoaders: [
          { test: /\.ts$/, include: /src/, loader: 'istanbul-instrumenter' }
        ]
      }
    },
    webpackMiddleware: {
      noInfo: true
    },
    reporters: ['progress', 'coverage'],
    coverageReporter: {
      dir: 'coverage',
      reporters: [
        { type: 'json', subdir: '.', file: 'coverage.json' }
      ]
    },
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Electron'],
    singleRun: false,
    concurrency: Infinity
  })
}

的package.json

{
  ...
  "scripts": {
    "test": "rimraf coverage && karma start --single-run && npm run coverage",
    "coverage": "npm run coverage:remap && npm run coverage:report",
    "coverage:remap": "remap-istanbul -i coverage/coverage.json -o coverage/coverage.json -t json",
    "coverage:report": "istanbul report html"
  },
  ...
}