todo.test.js

#!/usr/bin/node

var assert = require('assert');
var Todo = require('./todo');

var todo = new Todo();
var testCompleted = 0;

deleteTest();
addTest();
throwTest();
doAsyncTest(() => {
  console.log('colmpleted %d tests.', testCompleted);
});

function deleteTest() {
  console.log('test delete function');
  todo.add('Delete Me');
  assert.equal(todo.getCount(), 1, '1 item should exist');
  todo.deleteAll();
  assert.equal(todo.getCount(), 0, 'No items should exist');
  testCompleted++;
}

function addTest() {
  console.log('test add function');
  todo.deleteAll();
  todo.add('Added');
  assert.notEqual(todo.getCount(), 0, '1 item should exist');
  assert.equal(todo.getCount(), 1, 'i item should exist');
  testCompleted++;
}

function throwTest() {
  console.log('test add function');
  assert.throws(todo.add, /require/);
  testCompleted++;
}

function doAsyncTest(cb) {
  console.log('test doAsync function');
  todo.doAsync((value) => {
    assert(value, 'callback should be passed true');
    testCompleted++;
    cb();
  });
}