reassure VS react-native-testing-library

In this article, I presented a few simple examples of things that can cause performance problems in the long run. As you've noticed, minor refactoring led to a 93.1% performance improvement. Even though performance issues presented in the article can be caught during a thorough PR review, that can become inherently harder in complex codebases and as your React Native app grows. Making Reassure part of your test suite to address potential performance regressions and automate things in CI would greatly benefit you in the long run. Also, if you already write tests with react-native-testing-library (If you don't, you definitely should), creating Reassure perf tests is, to some degree, a copy-paste of existing tests with slight modification so that it can be quickly introduced into the development workflow. Due to the open-source nature of Reassure, if you have improvement suggestions, feel free to create issues in the repo, and Reassure team will address them.

Testing library: @testing-library/react-native

Has anyone recently done unit tests in RN using jest and https://callstack.github.io/react-native-testing-library/. I’m struggling to mock all the libraries. The example given in testing-library seems to doesn’t need to mock all the libraries but in my case it throws error. I’ve also added ‘transformIgnorePatterns’ in package.json. Any help or repo would be helpful.

This article offers an overview of React Native testing, but there’s so much more to learn! I encourage you to explore other testing techniques and tools, like Snapshot Testing, Detox, and React Native Testing Library. Choose the ones that work best for your project, and keep learning!

Introducing a new tool means introducing a new workflow. This can lead to lower adoption, as developers need to to get familiar with it in the first place. To prevent that from happening, we've based Reassure on https://callstack.github.io/react-native-testing-library/ API as something React Native developers should be familiar with.

Tests with Jest and React Native Testing Library.

The standard is React Native Testing Library for unit and integration tests, and Detox for E2E tests.

Using our experience from developing the React Native Testing Library, we created Reassure—a performance regression testing companion for React and React Native components. We developed it in partnership with Entain – one of the world’s largest sports betting and gaming groups.

I'm building a React Native application with TypeScript. I'm using React Native Testing Library for my component tests.

I faced the following issue https://github.com/callstack/react-native-testing-library/issues/955. Production build is failed and error points to the library from devDependencies.

In this tutorial, we'll be using react native testing library and the main philosophy of this library is focusing on testing how your application works, instead of its implementation.