cypress-jest-coverage-merge

A helper to merge Cypress and Jest coverage reports into one report file.

This script is inspired by this example of merging Cypress & Jest reports: https://github.com/bahmutov/cypress-and-jest and https://github.com/transmissionsdev/merge-cypress-jest-coverag.

For better compatibility with multiple OS(Windows/Linux), this project uses nodejs APIs to handle files, such as copy/move/mkdir etc.

Usage

1. Install

   npm i -D cypress-jest-coverage-merge
   

   Or

   yarn add -D cypress-jest-coverage-merge
   

2. configure jest.config.js to set jest coverage report directory to tests/coverage/jest:

   ...
   // Indicates whether the coverage information should be collected while executing the test
   collectCoverage: true,
   // The directory where Jest should output its coverage files
   coverageDirectory: '<rootDir>/tests/coverage/jest',
   ...
   

3. configure nyc in package.json to set Cypress coverage report directory to tests/coverage/cypress:

   ...
   "nyc": {
       "report-dir": "tests/coverage/cypress",
       "reporter": [
              "lcov",
              "json"
          ]
       }
   ...
   

4. Run your Cypress tests and output coverage to a tests/coverage/cypress/ directory.
5. Run your Jest tests and output coverage to a tests/coverage/jest directory.
6. Run npx cypress-jest-coverage-merge and check the tests/coverage/reports directory for the merged report!