# Integration Testing Frameworks for React

![](https://www.frontendeng.dev/images/blog/testing-para.png align="center")

Integration testing is between UNIT testing and END-2-END testing. It is a critical piece of testing strategy that makes sure your components are usable by other components even if they are still doing their work correctly.

For example, a button that correctly handles onClick events but does not allow other components to set an onClick handler is completely useless.

End 2 end tests can catch integration failures but they are expensive to run. Hence we should always write integration tests before tackling end to end tests.

If you want to [learn more about how react integration tests can be written please read this](https://www.frontendeng.dev/blog/10-integration-testing-in-react).

# Frameworks availability

React relies on frameworks like Jest, Cypress, React-Testing-Library among others for unit as well as integration testing but Cypress and Jest appear to be winners because of their features and wide adoption.

*React integration testing has a very good ecosystem of testing frameworks out of which Jest appears to offer the best of all worlds. If I were to pick one of these, I would have picked Jest. \[*[*Source*](https://www.frontendeng.dev/blog/10-integration-testing-in-react)*\]*