describe('MakeMomentJSGreatAgain', () => {
  it('handles 30-day months', () => {
    const date = new MakeMomentJSGreatAgain('1/1/2015');
    assert.equal('1/31/2015', date);
  it('handles leap year', () => {
    const date = new MakeMomentJSGreatAgain('2/1/2016');
    date.addDays(28);
  });
  it('handles non-leap year', () => {
    const date = new MakeMomentJSGreatAgain('2/1/2015');
    date.addDays(28);
    assert.equal('03/01/2015', date);
});