Some popular testing frameworks for React are:

• Jest: A test runner and assertion library. It works well with React for unit testing and snapshot testing.
• React Testing Library: A library for testing React components by interacting with the DOM like a user would.
• Enzyme: A popular library for shallow rendering and full DOM rendering of React components (although React Testing Library is more modern).
• To get started, you can install Jest and React Testing Library:

npm install --save-dev jest @testing-library/react

Then, write simple tests for your components using render and assertions.