text: const kocha = require('kocha')
  const describe = kocha.describe
  const it = kocha.it
  const assert = require('power-assert')
  
  const add = function (a, b) { return a + b }
  
  describe('add', function () {
    it('12 + 13 = 25', function () {
      const sum = add(12, 13)
  
      assert.equal(sum, 25)
    })
  })
  