How can I effectively test my Node.js applications?

How can I effectively test my Node.js applications?

You can use frameworks like Mocha, Chai, or Jest for unit testing. Would you like to know more about any specific framework?

What are the differences between Mocha and Jest?

Mocha is a flexible testing framework that allows you to choose your assertion library, while Jest comes with built-in assertions and is more opinionated. Jest also has features like snapshot testing.

Can you give me an example of a simple test using Jest?

Sure! Here's a simple test:

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

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

This tests a function that adds two numbers.

How do I run my tests in a CI/CD pipeline?

You can integrate your tests into a CI/CD pipeline using tools like GitHub Actions or Travis CI. You just need to set up a configuration file to run your tests on each push.