Testing

In the industry, the test-driven development (TDD) methodology encourages developers to write robust, maintainable, and bug-resistant code. TDD means, “test first, implement second”. By writing the test before you start coding, you’ll know exactly what your function’s input, output, happy path, and sad paths should be.

Jest is a popular JavaScript testing framework maintained by Facebook, known for its simplicity and support for large web applications. It is widely used in the industry for writing automated tests for JavaScript and TypeScript projects, ranging from small-scale applications to large-scale enterprise software. Jest provides a rich set of features such as a built-in test runner, assertion library, and mocking support, making it a comprehensive solution for unit testing, integration testing, and end-to-end testing. Its zero-configuration setup, fast execution, and snapshot testing capabilities streamline the testing process, enhancing developer productivity and code reliability.