text: let assert = require('assert');
  
  require('../src/index');
  require('../src/plugins/tomorrow');
  
  describe('isTomorrow()', () => {
      it ('Should be true', () => {
          assert.strictEqual(Datetime.isTomorrow("1972-12-21"), false);
      })
      it ('Should be true', () => {
          var tomorrow = new Date();
          tomorrow.setDate(tomorrow.getDate() + 1);
          assert.strictEqual(datetime(tomorrow).isTomorrow(), true);
      })
      it ('Should be false', () => {
          assert.strictEqual(datetime("1972-12-21").isTomorrow(), false);
      })
      it ('Should be 22', () => {
          assert.strictEqual(datetime("1972-12-21").tomorrow().day(), 22);
      })
      it ('Should be 22', () => {
          assert.strictEqual(datetime("1972-12-21").immutable().tomorrow().day(), 22);
      })
  });
  