What is Test-Driven Development in Node.js?

What is Test-Driven Development in Node.js?

Test-Driven Development (TDD) is a software development process where you write tests before writing the code that needs to pass those tests. In Node.js, it helps ensure your code is reliable and maintainable.

How do I start with TDD in a Node.js project?

To start with TDD in Node.js, you can follow these steps: 1. Set up your Node.js environment. 2. Choose a testing framework like Mocha or Jest. 3. Write a test for a small piece of functionality. 4. Run the test to see it fail. 5. Write the minimum code necessary to pass the test. 6. Refactor your code while keeping the tests green.

What are some benefits of using TDD?

Some benefits of TDD include improved code quality, easier debugging, better design decisions, and increased confidence in your codebase as you make changes.

Can you give me an example of a simple test in Node.js?

Sure! Here's a simple example using Mocha and Chai:

const { expect } = require('chai');

function add(a, b) {
    return a + b;
}

describe('Add Function', () => {
    it('should return 5 when adding 2 and 3', () => {
        expect(add(2, 3)).to.equal(5);
    });
});