unit testing node.js code example

Example 1: how to run mocha tests form a file

$ mocha -g 'logs a'

Example 2: node test unit

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