js_unit_testing.js

function add(a, b) {
  return a + b;
}

const cases = [
  // [a, b], expectedAnswer
  [[1, 2], 3], // 3
  [[5,  5], 10],// 10
  [[-1, 2], 1], // 1
  [[1, 1], 2]
];

cases.forEach((c, index) => {
  const [args, expected] = c;
  let [a, b] = args;
  console.log(`case # ${index + 1}`)
  console.log(add(a, b) === expected)
})

module.exports = add;