Is the training Qualiopi certified?

Yes, Learni is a Qualiopi-certified training organization. This certification guarantees the quality of our courses and enables funding through OPCO and other mechanisms.

How can I fund my training?

Our courses are eligible for OPCO funding. Learni supports you through the funding process. A personalized quote is available upon request.

What are the prerequisites for this training?

The prerequisites for the Training Vitest - Ultra-Fast and High-Performance JS Tests training are: Mastery of JavaScript ES6+, experience with Vite or bundlers, familiarity with Jest or unit tests.. A preliminary interview validates your eligibility.

Is the training available in person?

Yes, the Training Vitest - Ultra-Fast and High-Performance JS Tests training is available in in-person. The format can be adapted to your needs (inter, intra, custom).

Training Vitest - Ultra-Fast and High-Performanc... | Learni

The story of Learni

Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.

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Methods, approaches, and teaching resources

The Training Vitest - Ultra-Fast and High-Performance JS Tests training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.

The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.

Teaching resources provided

To ensure the quality of the Training Vitest - Ultra-Fast and High-Performance JS Tests training, Learni provides the following teaching resources:

Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, video projector or interactive touchscreen (for remote sessions)
Training environments installed on workstations or accessible online
Course materials, practical exercises, and supplementary resources
Post-training access to materials and teaching resources

For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.

* contact us for remote feasibility** ratio varies depending on the training followed

Assessment methods

The assessment of skills acquired during the Training Vitest - Ultra-Fast and High-Performance JS Tests training is carried out through:

During training: case studies, practical exercises, and professional scenarios
At the end of training: self-assessment questionnaire and skills evaluation by the trainer
After training: training completion certificate detailing acquired skills

Training accessibility

Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.

Training objectives

Configure Vitest for complex projects with custom environments

Implement advanced mocks and spies to simulate real APIs

Optimize parallel test performance and achieve 100% coverage

Integrate Vitest into CI/CD pipelines with GitHub Actions

Develop snapshot and visual tests for React/Vue UI

Debug and refactor large-scale test suites

Adopt best practices for reliable test code maintenance

Training program

Module 1Vitest Configuration: Advanced Setup (Vite, TypeScript, Coverage)

Dive into custom Vitest configuration, install and set up vite.config for ultra-fast tests, configure TypeScript and Istanbul coverage, complete practical exercises on a real project, generate detailed HTML reports, run initial test suites to validate immediate performance gains and scale your tests effortlessly.

Module 2Advanced Mocks and Spies: Simulating Dependencies (API, Modules)

Master vi.mock and vi.spy to simulate external APIs and databases, implement mock servers with MSW, practice on real e-commerce cases, generate automated mocks, debug complex interactions, leave with reusable templates that boost your productivity from tomorrow.

Module 3Performance and Parallelism: Optimizing Massive Test Suites

Optimize parallel tests with thread pools, manage persistent caching, analyze bottlenecks via Vitest UI, exercises on monorepos with 1000+ tests, integrate snapshot testing for UI, produce precise coverage, transform slow suites into fast benchmarks, save precious hours in daily development.

Module 4CI/CD Integration and Best Practices: Professional Deployment

Integrate Vitest into GitHub Actions and GitLab CI, set mandatory coverage thresholds, develop hybrid end-to-end tests, group code review for tests, create maintenance playbook, deliverables include ready-to-use pipeline, adopt expert practices for reliable and scalable codebases.