JS 代码覆盖率检测 - 使用 Istanbul 统计测试用例的覆盖范围

npm install --save-dev nyc jest

package.json

{
  "scripts": {
    "test": "nyc jest"
  }
}

npm test

coverage

index.html

package.json

nyc

{
  "nyc": {
    "exclude": [
      "config/",
      "node_modules/",
      "scripts/"
    ]
  }
}

nyc

config

node_modules

scripts

coverage.yml

name: Code Coverage

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  coverage:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3
      - name: Use Node.js 16
        uses: actions/setup-node@v3
        with:
          node-version: 16
      - run: npm install
      - run: npm test
      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v3
        with:
          token: ${{ secrets.CODECOV_TOKEN }}
          flags: unittests
          name: codecov-umbrella

main

package.json

nyc

check-coverage

{
  "nyc": {
    "check-coverage": true,
    "statements": 80,
    "branches": 80,
    "functions": 80,
    "lines": 80
  }
}

nyc

ts-node

@types/jest

npm install --save-dev ts-node @types/jest

jest.config.js

ts-node

module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',
};

package.json

nyc

{
  "scripts": {
    "test": "nyc --extension .ts jest"
  }
}

nyc