A year ago, I challenged myself to practice TDD on my React Native application all the time for two weeks. At first, I was afraid, then I was petrified. I kept thinking I could never write tests that my code would abide. But then I spent so many nights thinking about what testing is and how I was doing it wrong. And I grew strong. I became more confident writing tests with React Native Testing Library. After two weeks I realized that it was one of the best decisions I had ever made. One year later I would never go back, and I believe a lot of developers would benefit from it as well. In this talk I am going to cover: - a quick reminder of what TDD is - how to use 100% TDD (yes, even with components!) on a React Native app by developing a HackerNews clone in RN - why switching to TDD made me a lot faster - why TDD made my code healthier - in which conditions I would recommend not using TDD My goal is to lower the barrier to start using TDD with React Native and to convince other developers to give it a try!