Detox VS lint-staged

Nope. Not even on 0.71 yet https://github.com/wix/Detox/issues/3884

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!

I used Detox to test React Native apps. At that time, Detox was so "cool", saving both the time and effort of the dev team and the tester team. However, later on, I saw the complexity, as well as the "difficulty" with new team members, and that's when Maestro came to me as a savior. I know Maestro through an article on dev.to, but my team's "noob" is true 😂 (but my teammates don't believe it).

End-to-end testing is completely different on React Native, however. None of the Selenium-based E2E testing tools will work; neither will newer tools like Cypress or Playwright. You may have expected this - these are all DOM-based, and there’s no DOM in React Native. So instead developers will have to learn Detox or Appium.

Detox is a testing and automation tool for React Native and React web applications. It can be used to automate the process of testing an iOS app by simulating user interactions and then verifying that the app functions as expected.

I haven't used it yet, but it seems detox is a fine e2e testing tool for react native. something like cypress in the web. I think it's a little hard to configure, but in the end, it's really helpful.

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

We also improved our React Native support by adding the possibility to generate a Detox config for Expo applications.

Copy & paste the content of the equivalent file from the detox example app for RN, into it. Don't forget to change the package name to your project's package name.

Detox is great for React Native: https://wix.github.io/Detox/

Lint Staged: https://github.com/lint-staged/lint-staged

lint-staged is the second important tools we need here, install it via NPM.

We were already using lint-staged and have a pre-commit hook in place using Husky in our project for linter and prettier. So it made sense to add a check here.

Now you can config it in your package.json, here is the guide doc:

In the world of software development, maintaining consistent code quality and ensuring that the codebase adheres to predefined patterns and guidelines is crucial. However, manually enforcing these standards can be time-consuming and error-prone. This is where automation tools like Husky, Lint-Staged, Commitlint, and Commitizen come to the rescue. In this post, we will explore how these tools can be combined to streamline your development workflow.

This is wasted work that can and should be automated. Adding a linter and formatter on CI and a pre-commit hook such as lint-staged can do wonders.

lint-staged is a package that can be used to run formatting and linting commands on staged files in a Git repo.

To answer your next question: I lint and format on save, and I use Git hooks installed by Husky and executed through Lint-Staged (this tool helps ensure your Git hooks only run on modified files, etc) to ensure there are no lint or formatting errors whenever making a commit or pushing code. This is helpful for teams, as some developers tend to forget to run lint tasks, or don't have the Prettier extension installed in their IDE. If there are lint errors, the commit is rejected until fixed. YMMV - you'll need to fine-tune the strictness of this based on the team's needs.

Uses Husky Git hooks and Lint-staged pre-commit hooks.

Something else to consider is applying linting and formatting before every git commit. A package like Lint-staged only lints and formats on staged items, ensuring all pushed code follows the standards in the repo. This allows developers to have their own formatting preferences when developing, while the code homogenizes on push. Linting pre-commit also avoids strict rules like no-console or no-unused-vars restricting a developer when writing code, when it should only apply in production. Imagine not being able to console log anything during development!