Training Vitest - Effectively Test Your JavaScript Apps

$4,620

  • 4 days
  • Onsite
  • 10 people max.
Ref: MHJ761
10 people max.
$4,620
In-company rate: from $7,865 for the whole team
On-site and certification exam on quote
4 days
Onsite

Don't let this gap widen

Why this program matters

  • Without Vitest mastery, developers spend 50% more time on average debugging production bugs, costing up to 20 000 € per major incident according to Stack Overflow studies.

  • Teams without automated tests suffer 3 times more regressions, impacting 40% of deployments and customer satisfaction.

  • In 2024, 68% of recruiters reject JavaScript profiles unable to test effectively, blocking promotions and company competitiveness.

  • Every untested project widens the gap with competitors who deliver 2x more reliably and faster.

Imed BEN AMOR, Learni trainer · Development expert
Imed BEN AMOR

Learni trainer · Development expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

40,841 programs · 25 countries

  • Aptar
  • ArcelorMittal
  • Equans
  • EDF
  • Ubisoft
  • Microsoft

Every program built with a dedicated engineer

  • OpenAI
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  • NVIDIA
  • Google
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  • Microsoft Dynamics 365
  • Salesforce
  • ServiceNow
  • SAP
  • Oracle
  • Cisco
  • Fortinet
  • Palo Alto Networks
  • Aruba
  • VMware
  • Red Hat
  • Databricks
  • Snowflake
  • OVHcloud
  • Notion
  • AMD
  • Apple

Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.

Vitest training objectives

  • Master Vitest fundamentals for professional enterprise unit testing
  • Develop fast and reliable test suites with Vitest
  • Implement mocks and spies to simulate complex dependencies
  • Configure code coverage and automated reports
  • Optimize Vitest tests for CI/CD environments
  • Design integration tests suited to real-world projects

Vitest curriculum: 4 modules over 4 days

Module 1 : Vitest Fundamentals: Installation and First Unit Tests (Vite, Jest-like API, assertions)

Quick installation of Vitest in a Vite or vanilla JavaScript project, creation of your first test suite with basic assertions like expect and matchers, writing tests for pure functions and simple components, execution in watch mode for instant feedback, practical exercises on concrete business cases with live debugging and result validation by the trainer.

Module 2 : Advanced Vitest Tests: Mocks, Spies, and State Management (vi.mock, jest.fn, async tests)

Learning mocks to isolate external dependencies like APIs or third-party modules, use of spies to monitor function calls, asynchronous tests with await and promises to simulate network calls, hands-on practice on a red thread e-commerce application project, resolution of real failing test scenarios, production of detailed reports, and test performance optimization.

Module 3 : Vitest Coverage and Integration: Quality Measurement and Composite Tests (coverage, snapshot testing)

Configuration of Vitest code coverage to identify untested areas, generation of HTML reports and minimum thresholds for professional standards, implementation of snapshot testing to validate UI renders, integration tests between components and services, exercises on your personal code with tools like Vitest UI, development of a coverage plan targeting at least 80%, and collective review of metrics.

Module 4 : Vitest Deployment: CI/CD and Enterprise Best Practices (GitHub Actions, parallelization)

Integration of Vitest into CI/CD pipelines with GitHub Actions or GitLab, test parallelization to speed up builds, best practices for maintainable and scalable team tests, finalization of the red thread project with lightweight end-to-end tests, simulation of a production deployment, delivery of a ready-to-use template, and Q&A session to adapt to your professional context.

How Vitest skills are assessed

  • Quiz to validate learning outcomes at the end of the training
  • Continuous assessment through practical exercises
  • Presentation of the red thread project to the trainer

How the Vitest course is taught

  • Sessions led by an active expert trainer
  • Practical exercises on real business cases
  • Progressive red thread project throughout the training
  • Complete course materials provided to each participant

Vitest training: access and practical arrangements

The Training Vitest - Effectively Test Your JavaScript Apps 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 - Effectively Test Your JavaScript Apps 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 - Effectively Test Your JavaScript Apps 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

How Learni guarantees the quality of your Vitest training

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.

Step 1

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.
Step 2

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.
Step 3

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.
Step 4

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.

A child walking to school with a backpack
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
Enroll and offer a kit
FAQ

Vitest: frequently asked questions

Which tools are used in Vitest training?+
Hands-on work runs on vite, jest-like API, assertions, vi.mock, jest.fn and async tests. 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 master Vitest fundamentals for professional enterprise unit testing, develop fast and reliable test suites with Vitest and implement mocks and spies to simulate complex dependencies. Those are the stated objectives of the Vitest program at Beginner level, checked by the end-of-session assessment.
What does the Vitest program cover, day by day?+
Day 1: Vitest Fundamentals: Installation and First Unit Tests (Vite, Jest-like API, assertions). Day 2: Advanced Vitest Tests: Mocks, Spies, and State Management (vi.mock, jest.fn, async tests). Day 3: Vitest Coverage and Integration: Quality Measurement and Composite Tests (coverage, snapshot testing). Day 4: Vitest Deployment: CI/CD and Enterprise Best Practices (GitHub Actions, parallelization). The Vitest program runs over 4 days, delivered on site.
How is Vitest training assessed?+
Assessment relies on quiz to validate learning outcomes at the end of the training, continuous assessment through practical exercises and presentation of the red thread project to 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 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?+
Basic knowledge of JavaScript ES6+, use of npm or yarn, and Node.js fundamentals.
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.
Does Learni provide the equipment for Vitest training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
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