export const tests = []
const t = (f) => tests.push(f)

// First week year 0001
t(() => addWeek(new Date('0001-01-01')) === 'Monday')
t(() => addWeek(new Date('0001-01-02')) === 'Tuesday')
t(() => addWeek(new Date('0001-01-03')) === 'Wednesday')
t(() => addWeek(new Date('0001-01-04')) === 'Thursday')
t(() => addWeek(new Date('0001-01-05')) === 'Friday')
t(() => addWeek(new Date('0001-01-06')) === 'Saturday')
t(() => addWeek(new Date('0001-01-07')) === 'Sunday')
t(() => addWeek(new Date('0001-01-08')) === 'secondMonday')
t(() => addWeek(new Date('0001-01-09')) === 'secondTuesday')
t(() => addWeek(new Date('0001-01-10')) === 'secondWednesday')
t(() => addWeek(new Date('0001-01-11')) === 'secondThursday')
t(() => addWeek(new Date('0001-01-12')) === 'secondFriday')
t(() => addWeek(new Date('0001-01-13')) === 'secondSaturday')
t(() => addWeek(new Date('0001-01-14')) === 'secondSunday')

// random years
t(() => addWeek(new Date('2025-08-11')) === 'secondMonday')
t(() => addWeek(new Date('2001-05-11')) === 'secondFriday')
t(() => addWeek(new Date('2001-11-07')) === 'secondWednesday')
t(() => addWeek(new Date('0001-12-01')) === 'secondSaturday')
t(() => addWeek(new Date('1664-08-09')) === 'Saturday')
t(() => addWeek(new Date('1995-11-07')) === 'Tuesday')
t(() => addWeek(new Date('2020-01-01')) === 'Wednesday')
t(() => addWeek(new Date('2048-12-07')) === 'Monday')

t(({ eq }) =>
// random time traveling
  eq(
    timeTravel({
      date: new Date('2020-05-29 23:25:22'),
      hour: 21,
      minute: 22,
      second: 22,
    }).getTime(),
    new Date('2020-05-29 21:22:22').getTime(),
  ),
)

t(({ eq }) =>
  eq(
    timeTravel({
      date: new Date('2000-05-09 01:28:02'),
      hour: 21,
      minute: 22,
      second: 22,
    }).getTime(),
    new Date('2000-05-09 21:22:22').getTime(),
  ),
)

t(({ eq }) =>
  eq(
    timeTravel({
      date: new Date('2018-06-04 13:01:00'),
      hour: 10,
      minute: 16,
      second: 11,
    }).getTime(),
    new Date('2018-06-04 10:16:11').getTime(),
  ),
)

t(({ eq }) =>
  eq(
    timeTravel({
      date: new Date('1995-11-07 00:21:12'),
      hour: 23,
      minute: 12,
      second: 18,
    }).getTime(),
    new Date('1995-11-07 23:12:18').getTime(),
  ),
)

t(({ eq }) =>
  eq(
    timeTravel({
      date: new Date('1000-09-19 06:00:00'),
      hour: 22,
      minute: 10,
      second: 21,
    }).getTime(),
    new Date('1000-09-19 22:10:21').getTime(),
  ),
)

t(({ eq }) =>
  eq(
    timeTravel({
      date: new Date('1975-05-10 10:07:56'),
      hour: 17,
      minute: 15,
      second: 14,
    }).getTime(),
    new Date('1975-05-10 17:15:14').getTime(),
  ),
)

Object.freeze(tests)