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Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.
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The Training Testing Library - Reliable and Maintainable React Tests training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.
The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.
To ensure the quality of the Training Testing Library - Reliable and Maintainable React Tests training, Learni provides the following teaching resources:
For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.
The assessment of skills acquired during the Training Testing Library - Reliable and Maintainable React Tests training is carried out through:
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Learni training programs are available for inter-company and intra-company settings, both in-person and remote. Registration is possible up to 48 business hours before the start of training. Our programs are eligible for OPCO, Pôle emploi, and FNE-Formation funding. Contact us to discuss your training project and funding possibilities.
Discover the user-centric principles of Testing Library, set up the environment with Jest and React Testing Library, practice byRole, byLabelText, and byText queries on simple components, perform rendering and basic interaction tests, analyze common errors through concrete cases, produce your first validated tests in pairs to consolidate essential skills in 7 intensive hours.
Dive into fireEvent and userEvent to simulate realistic clicks, inputs, and focus, test complex forms with validation, handle async states with waitFor and findBy, apply assertions on accessible DOM, build integration test suites on a complete React app, debug with built-in debugging, deliver coverage reports to evaluate effectiveness.
Master API mocking with MSW for isolated tests, mock custom hooks and React contexts, integrate Testing Library with third-party libraries like React Router, practice network error and loading state scenarios, optimize tests for performance, collaborate in groups on a simulated e-commerce project, generate tested and documented deliverables ready for the enterprise.
Adopt maintainable patterns and test refactoring, configure minimum coverage thresholds, integrate with GitHub Actions and CI/CD pipelines, analyze advanced metrics with Allure, conduct team test code reviews, prepare for internal certification via a final challenge, export your professional test portfolio for immediate enterprise application.
Target audience
React developers, frontend engineers, and QA engineers seeking to upskill in automated testing for robust web applications.
Prerequisites
Mastery of React and ES6+ JavaScript, experience with Jest or another basic testing framework, knowledge of DOM and functional components.
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