Post

Szymon Chmal
@chmal.it

🎉 Introducing React Native Harness - a lightweight framework for testing native modules directly on device or emulator. Write tests in a Jest-like syntax, run them in a real React Native runtime, and verify native behavior without mocks.

Szymon Chmal
@chmal.it

Harness runs tests in a real React Native runtime. Unlike Jest, it doesn't rely on mocks and unlike Detox or Maestro, it focuses on testing native code directly, not automating UI flows.

Szymon Chmal
@chmal.it

Harness runs wherever Metro runs, starting with iOS and Android. It's built to be portable, making support for new platforms straightforward. As proof, we're also bringing support for VegaOS.

Szymon Chmal
@chmal.it

Designed for library authors and teams building native integrations. It is cross-platform, works on CI/CD and made to test real native behavior with a familiar workflow.

0 reposts0 likes

Szymon Chmal
@chmal.it

Harness is Open Source! Check out our Github and make sure to star it! github.com/callstackinc...

github.comGitHub - callstackincubator/react-native-harness: Harness brings Jest-style tests to real native environments so you can test TurboModules like you would test your React Native app: with JavaScript.Harness brings Jest-style tests to real native environments so you can test TurboModules like you would test your React Native app: with JavaScript. - callstackincubator/react-native-harness