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RNTL allows you to query element by role using *byRole queries. You can narrow the query using options like: name (text content or label), states (checked, disabled, expanded, selected, busy), and more...

🦉💡 `waitFor` and `findBy*` are essential tools for writing async tests using #ReactNativeTestingLibrary #BestPractices. Our previous docs on `waitFor` was... quite obsolete. Thanks to Zimmermann Pierre we now have an insightful and easy to read one 👏callstack.github.io/react-native-t…

📣 Today, our "android-performance-profiler" becomes Flashlight 🔦 Flashlight takes inspiration from Lighthouse and gives a #performance score to any #android app 💯 ➡️ Check it out github.com/bamlab/flashli… We also revamped the docs! 🥳 More news to come, stay tuned!🤞

🧪⚛️ We've released a first RC for #ReactNativeTestingLibrary v12! If you feeling adventeruous take it for a spin 🎢. There are some breaking changes ⚠️, that might require some attention initially, but should improve your dev & testing exp. in the long-term.

🎉 We've recently released RC1 for #ReactNativeTestingLibrary v12 🎢 👇 github.com/callstack/reac…

I am very happy that we can support App.js Conf 🗓️ 27-29 May 2026, it's really an awesome conference. We'll also have the chance to attend the conference with Charlotte Isambert, and Alexandre Moureaux will even give a talk on performance (surprising, right? 😆). See you on May 11th!

🎉 We've just released #ReactNativeTestingLibrary v12.0.0 🔥🔥🔥 Release highlights (AKA breaking changes): ✅ All queries exclude hidden elements by default ✅ All queries now return only host elements ✅ container API renamed to root/UNSAFE_root

What an 💥 few days it has been for #reactnative core! I'm over the moon to report that two very important things happened over the last few days! 👇

🎉 Just released #ReactNativeTestingLibrary v12.1.0 Changes: 1️⃣ print element tree on query error 2️⃣ proper stack trace on `findBy`, `findAllBy` query error 👇 github.com/callstack/reac…

🎉 Just released #ReactNativeTestingLibrary v12.1.3 🚀 It contains a number of useful bug-fixes and small tweaks to, e.g. renderHook, fireEvent, TS support. 👇 github.com/callstack/reac…

🎉 #ReactNativeTestingLibrary v12.2.0 is out 🚀 It contains an awesome new User Event API for realistic event simulation 🎪 Each interaction emits a sequence of events simulating #ReactNative runtime, incl. event data. First release supports: 1️⃣ press/longPress 2️⃣ type

❓Q: Why should you use the new #UserEvent API in #ReactNativeTestingLibrary? 🤯 A: Fire Event vs User Event invoked events

Great article by Gergely Orosz and Kent Beck 🌻 regarding the recent nonsense McKinsey proposes to measure developer productivity: newsletter.pragmaticengineer.com/p/measuring-de…

BTW We've released #ReactNativeTestingLibrary v12.3.0 yesterday, just in time for #ReactNativeEU ❤️🫶 It provides support ARIA web accessibility props (role & aria-*) 🙈 github.com/callstack/reac…

How to make sure you're improving #performance in your React Native app? 🤔 Here's a guide, with a sample scenario: switching from FlatList to FlashList in a sample app ⚡ Learn how to generate beautiful perf reports like this! 🥳 bam.tech/article/measur… Brief summary👇(1/5)

Since diving into RN, I've valued cross-platform dev for time-saving & smooth developer experiences. Wondered how widely adopted cross-platform frameworks are? Check out my article to get some answers. bam.tech/article/the-la…

⚛️ #ReactNativeTestingLibrary v12.3.1 is out! Highlights: 🌟 UserEvent scrollBy API for better simulation of ScrollView interaction 🦋 Improved fake timer handling for UserEvent press and other interactions github.com/callstack/reac…

✅ Just merged the final PR for Jest matcher migration to the core React Native Testing Library package. 🥳 🗓️ I plan to release RNTL v12.4 next week. Kudos to all the contributors who participated in this remarkable venture 👏👏👏

⚛️ React Native Testing Library v12.4 is out! 🎉🎉🎉 ✨ This highlight of this release are the built-in Jest matchers. All of legacy Jest Native matchers have been carefully migrated, reviewed & improved during this process, to make sure they work seamlessly with RNTL queries.

My analysis of the OpenAI situation is out. Originally, it was behind a paywall, but many subscribers have asked to make it public. I did, for this one. Read the full piece here. There are lots of things that feel off, and an important question looms: newsletter.pragmaticengineer.com/p/what-is-open…