A naukri.com initiative
Testim.io
3w
127
Image Credit: Testim.io
Jest Testing: A Helpful, Introductory Tutorial
- Jest is a popular test framework for JavaScript, initially created by Facebook for testing React applications.
- It has gained popularity for testing both front-end and back-end JavaScript applications.
- Unit testing is important for software quality, and Jest helps in verifying smallest parts of an application in isolation.
- Jest offers a complete experience with features like zero configuration setup and a comprehensive CLI tool.
- Advantages of Jest include easy test control, interactive mode, excellent documentation, and comprehensive mocking capabilities.
- Jest's main characteristics include zero configuration setup, isolation of tests, snapshot testing, and a rich API.
- To get started with Jest, you need to install it globally, create a project, add Jest as a dev dependency, write tests, and run them.
- Jest's vocabulary includes mocks, spies, describe blocks, matchers, setup and teardown functions, and snapshot testing.
- Mock functions in Jest help test the links between code, while spies track calls to object methods.
- The Jest basics cover describe blocks, it/tests, matchers for assertions, setup/teardown functions, and snapshot testing for React front ends.
Read Full Article
7 Likes
For uninterrupted reading, download the app