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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
Without mastering Vitest, your slow Jest tests waste 30% of dev time, production bugs explode by 40% according to Stack Overflow, CI/CD deployments fail 25% more often, teams lose 2 weeks/year debugging, competitors with Vite/Vitest deploy 5x faster, customer support costs climb to 15k€/year, this training avoids these pitfalls for immediate 10x ROI.
The Training Vitest - Fast and Reliable Unit 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 Vitest - Fast and Reliable Unit 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 Vitest - Fast and Reliable Unit Tests 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.
Dive into expert Vitest installation, configure vite.config.js for parallel tests, integrate TypeScript and Istanbul coverage, complete exercises on monorepo workspaces, generate custom HTML reports, test configurations live on real cases to boost speed x10 from day 1.
Build performant test suites with extended expect, implement custom matchers for complex APIs, chain exercises on React/Vue components, generate dynamic snapshots, optimize for ESM, experience the acceleration that makes tests addictive and 100% reliable.
Master vi.mock for external modules, create granular spies on prototypes, simulate timers and fetch with fake APIs, apply to real e-commerce cases, debug async interactions, produce production-ready deliverables that eliminate 90% of hidden bugs.
Integrate Vitest with GitHub Actions and Vercel, profile with vitest --reporter, optimize watch mode for fluid TDD, test basic end-to-end, finalize real project portfolio, leave certified with skills that transform your deployments into guaranteed successes.
Target audience
Lead JavaScript developers, frontend architects, Vite experts upskilling on modern testing.
Prerequisites
Mastery of JavaScript ES6+, experience with Jest or Playwright, knowledge of Vite, Node.js and CI/CD.
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