GitHub Action执行Jest覆盖率检查时遇No package data found错误

问题场景 #

配置GitHub Action执行Jest单元测试并生成覆盖率报告，使用Code Coverage Summary Action检查行覆盖率是否在60-80区间，但运行作业时抛出错误：

Parsing Error: No package data found

当前使用的tests.yml配置：

name: Node tests (with coverage)
on:
  push:
    branches:
      - '*'
      - '!master'
      - '!SS-test'
      - '!SS-UAT-test'
      - '!PS-prod'
  pull_request:
    branches:
      - 'master'
jobs:
  unit_tests:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v2
      
      - name: Setup node
        uses: actions/setup-node@v1
        with:
          node-version: 14

      - name: Install npm packages
        run: npm ci
      
      - name: Test 
        run: npm run test:coverage

      - name: Upload coverage artifact
        uses: actions/upload-artifact@v3
        with:
          name: my-artifact
          path: "coverage/"

      - name: Code Coverage Report
        uses: irongut/CodeCoverageSummary@v1.3.0
        with:
          filename: "/coverage/cobertura-coverage.xml"
          badge: true
          fail_below_min: true
          format: markdown
          hide_branch_rate: false
          hide_complexity: true
          indicators: true
          output: both
          thresholds: '60 80'

生成的cobertura-coverage.xml内容为空包数据：

<?xml version="1.0" ?>
<!DOCTYPE coverage SYSTEM "http://cobertura.sourceforge.net/xml/coverage-04.dtd">
<coverage lines-valid="0" lines-covered="0" line-rate="NaN" branches-valid="0" branches-covered="0" branch-rate="NaN" timestamp="1661235506222" complexity="0" version="0.1">
  <sources>
    <source>C:\guardian group\c360-account-services</source>
  </sources>
  <packages>
  </packages>
</coverage>

错误原因 #

1. Jest未生成有效覆盖率数据：cobertura-coverage.xml中<packages>为空、lines-valid=0，说明Jest未收集到任何代码覆盖率信息，可能是测试未执行、测试文件匹配规则错误，或覆盖率报告配置缺失。
2. 文件路径错误：Code Coverage Summary Action中filename使用了绝对路径/coverage/cobertura-coverage.xml，而GitHub Runner的工作目录是仓库根目录，绝对路径会导致文件找不到。
3. 路径格式不兼容：<source>中的Windows路径在Ubuntu Runner中无法识别，可能影响报告解析。

修复步骤 #

1. 修正Jest配置，生成有效Cobertura报告 #

在项目根目录的jest.config.js中添加或更新配置：

module.exports = {
  // 确保测试文件被正确匹配
  testMatch: ['**/__tests__/**/*.js?(x)', '**/?(*.)+(spec|test).js?(x)'],
  // 启用覆盖率收集并指定Cobertura格式
  collectCoverage: true,
  coverageReporters: ['cobertura', 'html'],
  // 指定需要收集覆盖率的文件范围（根据项目结构调整）
  collectCoverageFrom: [
    'src/**/*.js',
    '!src/**/*.test.js'
  ]
};

同时确保package.json中的test:coverage命令正确：

{
  "scripts": {
    "test:coverage": "jest --coverage"
  }
}

2. 修正GitHub Action中的文件路径 #

将Code Coverage Summary步骤的filename改为相对路径：

- name: Code Coverage Report
  uses: irongut/CodeCoverageSummary@v1.3.0
  with:
    filename: "coverage/cobertura-coverage.xml" # 去掉开头的斜杠
    badge: true
    fail_below_min: true
    format: markdown
    hide_branch_rate: false
    hide_complexity: true
    indicators: true
    output: both
    thresholds: '60 80'

3. 验证本地测试与报告生成 #

在本地运行npm run test:coverage，检查：

• 控制台是否显示测试用例执行成功
• coverage/cobertura-coverage.xml中是否包含<package>、<class>等实际数据，例如：

<package name="src" line-rate="0.75" branch-rate="0.5" complexity="0">
  <classes>
    <class name="utils.js" filename="src/utils.js" line-rate="0.75" branch-rate="0.5" complexity="0">
      <!-- 具体行覆盖率数据 -->
    </class>
  </classes>
</package>

验证 #

重新推送代码或触发Pull Request，GitHub Action作业应能正常解析覆盖率报告，并根据阈值判断是否通过。

内容的提问来源于stack exchange，提问作者karthik suryadevara