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 - Ultra-Fast Unit Tests for 2026
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
- Master Vitest for performant unit tests in professional environments
- Develop fast and reliable test suites for enterprise applications
- Implement advanced mocking and coverage in certifying projects
- Optimize CI/CD integration with Vitest to accelerate deployments
- Design scalable end-to-end tests with Vitest in 2026
- Acquire certifying skills in modern testing to boost productivity
- Deploy secure Vitest practices in enterprise contexts
Program
Module 1Vitest Fundamentals: configuration and first fast tests (Vite, setup, assertions)
Installation of Vitest in an existing Vite project, advanced configuration of the vitest.config.js file for professional environments, writing basic unit tests on React components or pure functions, use of built-in matchers like expect and toBe, practical exercises on real enterprise cases with immediate trainer feedback, creation of a testable red thread project to validate learning from the first day.
Module 2Vitest Asynchronous Tests: managing promises and APIs (mocking fetch, async/await)
Exploration of tests for asynchronous code with Vitest, native mocking of Node.js modules and external APIs via vi.mock, simulation of realistic HTTP responses for fetch or axios calls, resolution of race conditions with fake timers, practical workshops on enterprise backend services, optimization of execution speed for test suites under one second, generation of detailed reports for quality audits.
Module 3Advanced Vitest Mocking: spies, stubs, and snapshots (jest-like API, coverage tools)
Mastery of Vitest spies and stubs to isolate complex dependencies, capture of visual and serialized snapshots for UI components, integration of coverage with @vitest/coverage-istanbul, exercises on legacy codebases to modernize, testing custom React hooks with userEvent, generation of interactive HTML reports, immediate application to the red thread project to detect 95% of early bugs.
Module 4Vitest CI/CD Integration: GitHub Actions and coverage thresholds (parallelism, caching)
Configuration of CI/CD pipelines with Vitest on GitHub Actions or GitLab, activation of watch mode and parallel execution for ultra-fast tests, mandatory coverage thresholds for secure merges, dependency caching for 70% build time savings, workshops on real enterprise deployments, advanced debugging with --ui and detailed traces, completion of the production-ready red thread project.
Module 5Vitest 2026 Best Practices: performance and scalability (final project, refactoring)
Review of advanced Vitest patterns for monorepos and scalable apps, refactoring existing test suites for Jest to Vitest migration, optimization for ESM and strict TypeScript, simulation of high load with 10k parallel tests, presentation of the certifying red thread project, personalized action plan for enterprise integration, delivery of resources and post-training support for immediate adoption.
Evaluation method
- Technical MCQ on Vitest and its advanced APIs
- Evaluation based on test suite coverage and performance
- Presentation of the red thread project with quality audit by the trainer
Learning method
- Sessions led by a Vitest expert in an operational role
- Hands-on exercises on authentic enterprise cases
- Evolving red thread project over 5 days
- Complete pedagogical materials and open-source resources
Methods, materials and delivery
The Training Vitest - Ultra-Fast Unit Tests for 2026 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 - Ultra-Fast Unit Tests for 2026 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 - Ultra-Fast Unit Tests for 2026 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, setup, assertions, mocking fetch, async and await. Those tools come from the Vitest program itself, delivered on site over 5 days, so participants practise on the stack they will use at work.
What can participants do after Vitest training?+
They can master Vitest for performant unit tests in professional environments, develop fast and reliable test suites for enterprise applications and implement advanced mocking and coverage in certifying projects. Those are the stated objectives of the Vitest program at Intermediate level, checked by the end-of-session assessment.
What does the Vitest program cover, day by day?+
Day 1: Vitest Fundamentals: configuration and first fast tests (Vite, setup, assertions). Day 2: Vitest Asynchronous Tests: managing promises and APIs (mocking fetch, async/await). Day 3: Advanced Vitest Mocking: spies, stubs, and snapshots (jest-like API, coverage tools). Day 4: Vitest CI/CD Integration: GitHub Actions and coverage thresholds (parallelism, caching). Day 5: Vitest 2026 Best Practices: performance and scalability (final project, refactoring). The Vitest program runs over 5 days, delivered on site.
How is Vitest training assessed?+
Assessment relies on technical MCQ on Vitest and its advanced APIs, evaluation based on test suite coverage and performance and presentation of the red thread project with quality audit by the trainer. 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 $5,775 per participant. For an in-company team, the flat rate starts at $10,395 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?+
5 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 a testing framework like Jest, and use of Vite.
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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