import {describe, it, expect, beforeEach} from 'vitest';
import {DateTimeFormatTimeZone, Instant} from '@/';
import {TimeZone} from '@clarify/zone-data';
import importer from '@clarify/zone-data/importer';

describe('TimeZone', () => {
  let precaluated!: TimeZone;
  let iateZone!: DateTimeFormatTimeZone;

  beforeEach(async () => {
    precaluated = await importer['Europe/Berlin']();
    iateZone = new DateTimeFormatTimeZone('Europe/Berlin');
  });

  describe('#getOffsetMillisecondsFor', () => {
    it('with string as option', async () => {
      let instant = Instant.fromEpochMilliseconds(1709910237265);
      expect(iateZone.getOffsetMillisecondsFor(instant.epochMilliseconds)).toEqual(3600000);
      expect(precaluated.getOffsetMillisecondsFor(instant.epochMilliseconds)).toEqual(3600000);
    });
  });
});