text: const {
     format_date, 
     format_plural,
     format_url
  } = require('../utils/helpers');
  
  test('format_date() returns a date string', () => {
     const date = new Date('2020-03-20 16:12:03');
  
     expect(format_date(date)).toBe('3/20/2020');
  });
  
  test(`format_plural() returns either single or plural object`, () => {
     const txt = ['tiger', 2];
  
     expect(format_plural(txt[0], txt[1])).toBe('tigers');
  });
  
  test('format_url() returns a simplified url string', () => {
     const url1 = format_url('http://test.com/page/1');
     const url2 = format_url('https://coolstuff.com/abcdefg');
     const url3 = format_url('https://www.google.com?q=hello');
  
     expect(url1).toBe('test.com');
     expect(url2).toBe('coolstuff.com');
     expect(url3).toBe('google.com');
  })