import {describe, it, expect} from 'vitest';
import {ZonedDateTime} from '@/';

describe('ZonedDateTime', () => {
  describe('.weekOfYear', () => {
    describe('year starts on monday', () => {
      it('Europe/Oslo', async () => {
        let date = new ZonedDateTime(Date.parse('2024-03-08T15:03:57.265Z'), 'Europe/Oslo');
        expect(date.weekOfYear).toEqual(10);
      });

      it('calculates correct for end of week', async () => {
        let date = new ZonedDateTime(Date.parse('2024-03-17T15:03:57.265Z'), 'Europe/Oslo');
        expect(date.weekOfYear).toEqual(11);
      });

      it('calculates correct for start of day at start of week', async () => {
        let date = new ZonedDateTime(Date.parse('2024-03-18T15:03:57.265Z'), 'Europe/Oslo');
        expect(date.startOfDay().weekOfYear).toEqual(12);
      });

      it('Europe/Oslo', async () => {
        let date = new ZonedDateTime(Date.parse('2024-03-03T15:03:57.265Z'), 'Europe/Oslo');
        expect(date.weekOfYear).toEqual(9);
      });
    });

    describe('year starts on friday', () => {
      it('Europe/Oslo', async () => {
        let date = new ZonedDateTime(Date.parse('2027-03-08T15:03:57.265Z'), 'Europe/Oslo');
        expect(date.weekOfYear).toEqual(10);
      });

      it('Europe/Oslo', async () => {
        let date = new ZonedDateTime(Date.parse('2027-03-18T15:03:57.265Z'), 'Europe/Oslo');
        expect(date.weekOfYear).toEqual(11);
      });

      it('Europe/Oslo', async () => {
        let date = new ZonedDateTime(Date.parse('2027-03-03T15:03:57.265Z'), 'Europe/Oslo');
        expect(date.weekOfYear).toEqual(9);
      });
    });
  });
});