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 Jest Training - Effectively Test Your JavaScript Code training are: Basic knowledge of JavaScript ES6+, Node.js usage, and asynchronous programming concepts.. A preliminary interview validates your eligibility.

What are the objectives of the Jest Training - Effectively Test Your JavaScript Code training?

The objectives of the Jest Training - Effectively Test Your JavaScript Code training are: Install and configure Jest in a JavaScript project. Write unit tests for functions and components. Master essential Jest assertion matchers. Mock dependencies and external modules. Structure test suites with describe and it. Generate and analyze code coverage. Run tests in watch mode and CI/CD. Upon completion, you will be able to put these skills into practice.

Is the training available in person?

Yes, the Jest Training - Effectively Test Your JavaScript Code training is available in in-person. The format can be adapted to your needs (inter, intra, custom).

Jest Training - Effectively Test Your JavaScript... | 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 Jest Training - Effectively Test Your JavaScript Code 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 Jest Training - Effectively Test Your JavaScript Code 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 Jest Training - Effectively Test Your JavaScript Code 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 access terms and deadlines

Training program

Module 1Day 1: Jest Installation: Project Configuration and First Tests (CLI, jest.config.js, Basic Matchers)

Dive into Jest by installing the tool via npm in a Node.js or React project, configure jest.config.js to match your source files, write your first tests with expect and toBe, test simple functions on concrete cases like calculators, debug live with practical exercises, obtain your first green test reports, all while alternating quick theory and motivating hands-on sessions for immediate proficiency.

Module 2Day 2: Advanced Tests: Mocks, Async, and Snapshots (jest.fn, async/await, toMatchSnapshot)

Advance to the next level by mocking functions with jest.fn and modules via jest.mock, handle promises and async/await to test simulated fetch APIs, capture React snapshots to validate UI renders, apply to real cases like an e-commerce component, iterate with beforeEach hooks, produce reusable testable deliverables, in a collaborative atmosphere that boosts your confidence through live coding.

Module 3Day 3: Best Practices and Integration: Coverage, Watch Mode, CI (coverage, --watch, GitHub Actions)

Finalize your mastery by measuring code coverage with npx jest --coverage, optimize for 80%+ via targeted exercises, configure watch mode for smooth TDD, integrate Jest into a simple CI/CD pipeline with GitHub Actions, review real patterns on a complete project like a todo-list app, export HTML reports, leave with a ready-to-use test portfolio and pro tips for team scaling.