This is a lecture that is 4 years old. As the react version was upgraded, the "Enzyme" library stopped updating. Therefore, the "@testing-library/react-native" library must be used. Since it is absolutely impossible to do it 100% exactly as in the lecture, I asked chatGPT and succeeded in linking the jest and detox libraries with TypeScript. I will leave the github address below for your reference. The current latest react-native version is 0.71.x. Please note that detox's react-native support version is 0.70.7. Conclusion: I felt that it was okay for grasping the basic concepts of writing test code, but since the lecture is not updated, it seems that it is not a lecture worth 30,000 won at this point. https://github.com/qnrjs42/rn_tdd_inflearn