Requirements

• Ensure that you have Node.js installed on your system.
• Choose either npm (comes with Node.js) or Yarn as your preferred package manager.
• Set up a new project directory or navigate to an existing one using your terminal or command prompt.
• Create your test files with .test.js or .spec.js extension, or place them inside a dedicated __tests__ directory.
• Write your test cases using the Jest testing framework and its available functions, such as describe, it, and expect.
• Utilize Jest's built-in assertions, like expect, to verify expected outcomes and compare values.