Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript

$3,465

  • 3 days
  • Onsite
  • 8 people max.
Ref: UXI664
8 people max.
$3,465
In-company rate: from $6,290 for the whole team
On-site and certification exam on quote
3 days
Onsite

Don't let this gap widen

Why this program matters

  • Without solid mastery of unit tests with Vitest for JavaScript and TypeScript, your teams waste an average of 25 hours per sprint manually chasing bugs, tripling delivery delays.

  • 68 % of production incidents among mid-level developers stem from faulty or missing unit tests, costing up to 15 000 € per critical flaw in downtime and emergency fixes.

  • These gaps expose your company to lost competitiveness against agile competitors, while your career stalls against promotions reserved for experts in reliable automation.

  • Every month without this expertise, the risk of technical blackout accumulates, threatening business stability.

Célian Lebacle, Learni trainer · Web & mobile expert
Célian Lebacle

Learni trainer · Web & mobile 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

40,842 programs · 25 countries

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

Every program built with a dedicated engineer

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

Unit Tests training objectives

  • Understand the importance of testing in the development cycle
  • Know how to install and configure Vitest for different environments
  • Write clear, maintainable, and robust unit tests with Vitest
  • Use advanced features: mocks, coverage, snapshot testing...
  • Integrate Vitest into continuous integration (CI)
  • Optimize productivity with Vitest in React/Vue/Svelte projects

Unit Tests curriculum: 3 modules over 3 days

Module 1 : Introduction to Unit Testing & Getting Started with Vitest

The role of tests in the software lifecycle. Presentation of Vitest: philosophy, advantages over Jest and other tools. Installation, simple configuration, first tests on native JavaScript projects. Differentiation between unit, integration, and end-to-end tests. Discovery of Vitest's essential API (describe/it/expect).

Module 2 : Writing Advanced Tests and Code Coverage

Complex test scenarios, managing data sets, asynchronous tests with Promises/Async. In-depth use of mocks and spies. Analysis and optimization of code coverage (Coverage). Snapshot testing. Structuring a test folder. Resolving common issues.

Module 3 : Vitest with Modern Frameworks & Continuous Integration

Advanced configuration for React, Vue, and Svelte projects. Integrating Vitest with Vite for rapid development. Setting up CI (GitLab, GitHub Actions), test reporting, best practices for maintaining test suites. Debugging failures, lessons learned, adopting a TDD workflow with Vitest.

How Unit Tests skills are assessed

  • Multiple-choice quizzes and mini-projects (ongoing thread) per day
  • Final evaluation on a concrete case (tests to write on provided project)

How the Unit Tests course is taught

  • Alternating illustrated presentations and technical demonstrations
  • Guided hands-on exercises with realistic use cases
  • Access to an enriched examples repository and detailed PDF support

Unit Tests training: access and practical arrangements

The Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript 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: Mastering Unit Tests with Vitest for JavaScript and TypeScript 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: Mastering Unit Tests with Vitest for JavaScript and TypeScript 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 Unit Tests 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

Unit Tests: frequently asked questions

What can participants do after Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript training?+
They can understand the importance of testing in the development cycle, know how to install and configure Vitest for different environments and write clear, maintainable, and robust unit tests with Vitest. Those are the stated objectives of the Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript program at Intermediate level, checked by the end-of-session assessment.
What does the Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript program cover, day by day?+
Day 1: Introduction to Unit Testing & Getting Started with Vitest. Day 2: Writing Advanced Tests and Code Coverage. Day 3: Vitest with Modern Frameworks & Continuous Integration. The Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript program runs over 3 days, delivered on site.
How is Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript training assessed?+
Assessment relies on multiple-choice quizzes and mini-projects (ongoing thread) per day and final evaluation on a concrete case (tests to write on provided project). Learni issues a completion certificate together with the individual assessment report at the end of the Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript program, which an L&D team can file as evidence.
How much does Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript training cost per participant?+
Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript training costs $3,465 per participant. For an in-company team, the flat rate starts at $6,290 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 Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript training take?+
3 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 Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript 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 Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript training?+
Good knowledge of modern JavaScript and basic TypeScript recommended.
Is a certificate issued after Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript 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 Training: Mastering Unit Tests with Vitest for JavaScript and TypeScript 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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