import { formatTitleString, hasVisibleDate, initArray } from '../utils';

describe('initArray', () => {
  it('works', () => {
    const length = 5;
    const initFunc = index => `item_${index}`;

    const expected = ['item_0', 'item_1', 'item_2', 'item_3', 'item_4'];

    expect(initArray(length, initFunc)).toEqual(expected);
  });
});

describe('formatTitleString', () => {
  it('works', () => {
    const date = new Date('01/21/2022');

    expect(formatTitleString(date)).toEqual('January 2022');
  });
});

describe('hasVisibleDate', () => {
  const arrayWithAllUndefined = [undefined, undefined, undefined];
  const arrayWithAVisibleDate = [undefined, undefined, new Date('01/02/2021'), undefined];

  it.each`
    dates                    | expected
    ${arrayWithAllUndefined} | ${false}
    ${arrayWithAVisibleDate} | ${true}
  `('return $expect when input is $dates', ({ dates, expected }) => {
    expect(hasVisibleDate(dates)).toEqual(expected);
  });
});