import {describe, it, expect, beforeAll} from 'vitest';
import {ZonedDateTime} from '@/';
import importer from '@clarify/zone-data/importer';
import {TimeZone} from '@clarify/zone-data';

describe('ZonedDateTime', () => {
  describe('#add', () => {
    let timeZone!: TimeZone;
    beforeAll(async () => {
      timeZone = await importer['Europe/Berlin']();
    });

    it('constrains', async () => {
      let date = new ZonedDateTime(Date.parse('2024-01-31T15:03:57.265Z'), timeZone);
      expect(date.add({months: 1}).toString()).toEqual('2024-02-29T16:03:57.265+01:00[Europe/Paris]');
    });

    it('rejects', async () => {
      let date = new ZonedDateTime(Date.parse('2024-01-31T15:03:57.265Z'), timeZone);
      expect(() => {
        date.add({months: 1}, {overflow: 'reject'});
      }).toThrowError();
    });
  });
});