How do I set up Mocha for testing my JavaScript code?

How do I set up Mocha for testing my JavaScript code?

To set up Mocha, first install it using npm with the command npm install --save-dev mocha. Then, create a test directory.

What should I include in my test files?

In your test files, you should include the describe and it functions to structure your tests. 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);
    });
  });
});

How do I run my tests after setting everything up?

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

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

Then, run npm test in your terminal.