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 actual code. In Node.js, it helps ensure your code works as expected and makes it easier to refactor.

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

To start with TDD in Node.js, first set up a testing framework like Mocha or Jest. Then, write a test for a small piece of functionality, run the test to see it fail, write the code to pass the test, and finally refactor.

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

Sure! Here's a simple example using Jest:

const sum = (a, b) => a + b;

test('adds 1 + 2 to equal 3', () => {
  expect(sum(1, 2)).toBe(3);
});

What are the benefits of using TDD?

The benefits of TDD include improved code quality, easier debugging, better design, and increased confidence in your code changes.