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.
Training Vitest - Fast and Reliable Unit Tests
Trusted by — schools, companies and industrial groups
25,752 programs · 25 countries
Every program built with a dedicated engineer
Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.
Learning objectives
- Set up an optimized Vitest workspace for complex projects.
- Implement ultra-performant parallel unit tests.
- Master advanced mocks, spies, and custom stubs.
- Integrate Vitest with Vite, React, Vue, and CI/CD pipelines.
- Profile and debug test suites in production.
- Adopt best practices for zero-friction maintenance.
Program
Module 1Configuration: Advanced Vitest Setup (Vite, TypeScript, Coverage)
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.
Module 2Unit Tests: Advanced Assertions (expect, Custom Matchers)
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.
Module 3Mocks and Spies: Expert Simulation (vi.mock, Fake Timers)
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.
Module 4Integration and Performance: CI/CD, Profiling (GitHub Actions, Watch Mode)
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.
Evaluation method
- Daily interactive quizzes
- Practical projects per day
- Final certifying exam
- Code review by experts
Learning method
- Hands-on exercises 70%
- Real business cases
- Unlimited video replays
- Slack support for 3 months
Methods, materials and delivery
The Training Vitest - Fast and Reliable Unit 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 Training Vitest - Fast and Reliable Unit 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 Training Vitest - Fast and Reliable Unit 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.
The Learni story
Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.
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.
Our social commitment
A school kit donated to a child for every training booked
To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.
- Backpack, notebooks and essential supplies
- Distributed through our partner charities
- Included, at no extra cost to you
FAQ
Frequently asked questions
Which tools are used in Vitest training?+
Hands-on work runs on vite, typeScript, coverage, expect, custom Matchers and vi.mock. Those tools come from the Vitest program itself, delivered on site over 4 days, so participants practise on the stack they will use at work.
What can participants do after Vitest training?+
They can set up an optimized Vitest workspace for complex projects, implement ultra-performant parallel unit tests and master advanced mocks, spies, and custom stubs. Those are the stated objectives of the Vitest program at Expert level, checked by the end-of-session assessment.
What does the Vitest program cover, day by day?+
Day 1: Configuration: Advanced Vitest Setup (Vite, TypeScript, Coverage). Day 2: Unit Tests: Advanced Assertions (expect, Custom Matchers). Day 3: Mocks and Spies: Expert Simulation (vi.mock, Fake Timers). Day 4: Integration and Performance: CI/CD, Profiling (GitHub Actions, Watch Mode). The Vitest program runs over 4 days, delivered on site.
How is Vitest training assessed?+
Assessment relies on daily interactive quizzes, practical projects per day and final certifying exam. Learni issues a completion certificate together with the individual assessment report at the end of the Vitest program, which an L&D team can file as evidence.
How much does Vitest training cost per participant?+
Vitest training is priced on quote. The amount depends on headcount, format and how far the syllabus is tailored to your team. A detailed quote is sent within one business day, and team pricing covers the whole group from the second participant.Vitest training costs $4,620 per participant. For an in-company team, the flat rate starts at $7,865 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does Vitest training take?+
4 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Vitest training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Vitest training?+
Mastery of JavaScript ES6+, experience with Jest or Playwright, knowledge of Vite, Node.js and CI/CD.
Is a certificate issued after Vitest training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
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