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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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30 free minutes with a training advisor — no commitment.
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Don't let this gap widen
Sans maîtrise de Jest, vos applications JavaScript accumulent en moyenne 40% de bugs non détectés avant production, générant des coûts de correction jusqu'à 15 fois supérieurs selon Gartner.
Les équipes sans tests unitaires perdent 35% de temps en debugging manuel, retardant les livraisons et impactant les revenus.
En 2024, 68% des incidents critiques en entreprise proviennent d'un faible coverage de code, exposant à des pertes clients et amendes RGPD.
Pour les développeurs, ignorer Jest creuse l'écart salarial de 20% face aux profils certifiés en testing.
Chaque projet sans tests risque des recalls coûteux et une réputation endommagée, tandis que vos concurrents déploient 2x plus vite.
Investissez dans cette formation pour sécuriser vos compétences professionnelles et booster la fiabilité de vos produits dès aujourd'hui.
The Formation Jest - Maîtriser les tests unitaires JavaScript 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 Formation Jest - Maîtriser les tests unitaires JavaScript 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 Formation Jest - Maîtriser les tests unitaires JavaScript 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.
Installation rapide de Jest dans un projet Node.js ou React via npm ou yarn, création de votre premier test unitaire sur des fonctions pures et composants simples, maîtrise des matchers essentiels comme toBe, toEqual, toMatch pour valider résultats attendus, exercices pratiques sur cas concrets d'entreprise avec code review en direct, implémentation de mocks pour simuler API et modules externes, génération automatique de rapports de coverage de code, optimisation des suites de tests pour une exécution rapide, production d'un projet testable complet comme livrable final avec documentation pédagogique.
Target audience
Développeurs JavaScript, testeurs QA, ingénieurs qualité logicielle souhaitant une montée en compétences sur les tests automatisés en entreprise
Prerequisites
Connaissances de base en JavaScript ES6+ et notions de développement web
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