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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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Don't let this gap widen
Sans une maîtrise de Testing Library pour les tests automatisés React, 70 % des bugs passent inaperçus en développement et explosent en production, générant des pannes imprévues.
Les équipes perdent en moyenne 25 % de leur productivité en debuggage d'urgence, avec un coût par incident majeur avoisinant les 15 000 €, selon les rapports State of JS.
85 % des échecs de déploiement React sont liés à des tests fragiles, exposant l'entreprise à des pertes clients et à des audits critiques.
Chaque trimestre sans compétences solides en tests modernes creuse un retard compétitif fatal, menaçant postes et croissance business.
The Maîtriser Testing Library : Les Tests Automatisés Modernes pour Applications React 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 Maîtriser Testing Library : Les Tests Automatisés Modernes pour Applications React 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 Maîtriser Testing Library : Les Tests Automatisés Modernes pour Applications React training is carried out through:
Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.
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.
Présentation de Testing Library, philosophie orientée accessibilité, différences avec les anciennes approches de tests (Enzyme/Jest), configuration de l’environnement, installation, premières assertions, structure d’un test réussi. Bonnes pratiques de structuration des dossiers et organisation des tests. Premiers tests sur composants simples.
Simulation d’événements utilisateur, gestion des formulaires, tests sur composants contrôlés et non contrôlés. Gestion des éléments asynchrones (API, loaders), interactions multiples. Introduction aux tests d’intégration et gestion d’un store d’état (ex : Redux, Context API). Méthodologie pour détecter les régressions et automatiser les scénarios critiques.
Intégration de Testing Library avec Jest et d’autres runners de test. Analyse de la couverture, métriques essentielles et leur interprétation. Mise en place sur un CI/CD (GitHub Actions, Gitlab CI). Stratégies de refactoring d’une base de tests existante. Maintenance de la base de tests, documentation, collaborations au sein d’une équipe produit.
Target audience
Développeurs front-end, intégrateurs et équipes QA souhaitant professionnaliser leurs tests sur des applications React
Prerequisites
Maîtrise des bases de JavaScript et connaissance de React.js
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