cypress-native-chrome-code-coverage-example

Native code coverage in Chrome browser via Debugger protocol during Cypress end-to-end tests

Main pieces

• Connecting to Chrome via chrome-remote-interface copied from flotwig/cypress-log-to-output.
• Code coverage via Debugger Protocol copied from cyrus-and/chrome-remote-interface#170. See cypress/plugins/index.js
• Conversion of v8 coverage to Istanbul-compatible coverage using v8-to-istanbul

npm run cy:open
npm run report

The output is saved to coverage/index.html

More info

• A quick look at how Chrome's JavaScript code coverage feature works
• Istanbul coverage format