Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
- Triple validation: technical, pedagogical, sectoral.
- Minimum rating 4.8/5 over the last 12 sessions.
1 seat held for the next session
30:00Held for another
Request a call back and an advisor reaches you within 24 business hours, Monday to Saturday.
Learning objectives
- Configure Vitest in complex Vite projects with custom environments.
- Implement advanced mocks, spies, and stubs to simulate real APIs.
- Master snapshots, coverage, and watch mode for optimal coverage.
- Optimize test performance with parallelism and caching.
- Integrate Vitest into CI/CD pipelines like GitHub Actions or Jenkins.
- Develop end-to-end tests for advanced React/Vue components.
- Debug and profile large-scale test suites.
The Learni story
Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.
Don't let this gap widen
Why this program matters
Without advanced Vitest, your JavaScript tests slow down builds by 40% on average, exposing 30% of critical bugs in production according to State of JS studies.
Lose 2h/day on manual debugging, impacting team productivity by 25% and inflating corrective costs to 5000€/month for a team of 5 devs.
With low coverage <70%, 60% of features regress in staging, delaying releases by weeks and frustrating clients.
Master Vitest or risk costly downtime, demotivated teams, and more agile competitors who deploy 3x faster.
Program
Module 1Vitest Configuration & Advanced Unit Tests: Vite, mocks, snapshots (exercises, real cases).
Dive into custom Vitest configuration for Vite, install advanced plugins like @vitest/ui, create dynamic mocks for external APIs via vi.mock, perform exercises on spies to validate interactions, generate interactive snapshots on complex components, analyze coverage in real-time with detailed HTML reports, all applied to a real project to deliver a robust and scalable test suite.
Module 2Optimization, CI/CD & Vitest Best Practices: coverage, parallelism, integrations (optimized deliverables).
Accelerate your tests with parallel mode and persistent cache, integrate Vitest with GitHub Actions for automated runs, configure coverage thresholds to 90%, profile performance on 1000+ tests, develop custom matchers for specific domains, debug via integrated debugger and detailed traces, finalize with a capstone project, a functional CI/CD pipeline, and an optimization report, boosting your dev efficiency by 50% from the next day.
Evaluation method
- Interactive quizzes at the end of each module
- Practical project evaluated by the trainer
- Self-assessment of coverage and performance
Learning method
- Active pedagogy through hands-on exercises
- Real-world case studies from production teams
- Live demonstrations with video replays
Methods, materials and delivery
The Advanced Vitest Training - Ultra-Fast & Reliable JS Tests program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.
The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.
Equipment required
For the smooth delivery of the Advanced Vitest Training - Ultra-Fast & Reliable JS Tests program, the following equipment is required:
- Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
- Training environments installed on workstations or accessible online
- Course materials, hands-on exercises and complementary resources
- Post-training access to materials and educational resources
For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.
* contact us for remote delivery feasibility** ratio varies depending on the program
Skills assessment methods
Assessment of skills acquired during the Advanced Vitest Training - Ultra-Fast & Reliable JS Tests program is performed through:
- During training: case studies, hands-on labs and professional scenarios
- End of training: self-assessment questionnaire and skills evaluation by the trainer
- After training: completion certificate detailing acquired skills
Program accessibility
Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.
Enrollment terms and lead times
Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.
Verified reviews
What our learners
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
★★★★★
« cool, j'ai appris des trucs »
★★★★★
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
★★★★★
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
★★★★★
« 😊👍 »
★★★★★
« bien 👍 »
★★★★★
« Allan Busi t'es au top, continue comme ça. formation géniale »
Our method
Training quality, guaranteed at every step
Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.
You meet the trainer beforehand
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
- Live briefing on goals and team context.
- Veto right — we swap the trainer for free if needed.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
- Hands-on cases drawn from your stack and projects.
- Program co-written then validated by your team.
Continuous quality follow-up
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
- NPS, knowledge quizzes and skills self-assessment.
- Satisfaction guarantee: fully satisfied or free rework.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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FAQ
Frequently asked questions
How much does the Advanced Vitest Training - Ultra-Fast & Reliable JS Tests training cost?+
The individual price is $2,310 (USD). A detailed quote is sent within one business day.
How long is the Advanced Vitest Training - Ultra-Fast & Reliable JS Tests training?+
The training lasts 2 journées, available live online (US time zones) or on-site at your offices.
How is this training paid for?+
Most US teams pay directly through their company (L&D or training budget). We invoice in US dollars and accept bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
Are there any prerequisites?+
Advanced mastery of JavaScript/ES6+, experience with Vite or similar bundler, basics of Jest or equivalent testing framework.
Is a certificate delivered at the end?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report.
Does Learni provide the equipment?+
No. A computer and stable internet connection are required for the participant. Learni provides the educational platform, the trainer and all course materials.
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