How can I test my Node.js application using Mocha?

How can I test my Node.js application using Mocha?

To test your Node.js application with Mocha, first install Mocha using npm. Run npm install --save-dev mocha.

What is the basic structure of a Mocha test?

A basic Mocha test structure includes describe for grouping tests and it for individual test cases. For example:

const assert = require('assert');

describe('Array', function() {
  describe('#indexOf()', function() {
    it('should return -1 when the value is not present', function() {
      assert.strictEqual([1, 2, 3].indexOf(4), -1);
    });
  });
});

Can I use Mocha with other assertion libraries?

Yes, Mocha is compatible with various assertion libraries like Chai, Should.js, and Node's built-in assert module.

How do I run my Mocha tests?

You can run your Mocha tests by adding a test script in your package.json file, like this:

"scripts": {
  "test": "mocha"
}

Then, run npm test in your terminal.