import { getMalayalamDate, getOrdinalDay } from '../src/calendar.mjs';
import assert from 'node:assert';

describe('getMalayalamDate unit test', () => {
  it('Conversion of date 2026-01-01 returns correct Malayalam date', () => {
    const result = getMalayalamDate(new Date(2026, 0, 1, 0, 0, 0));
    assert.deepStrictEqual(result, {
        year: 1201,
        month: 'Dhanu',
        day: 17,
        naksatra: 'Rohini'
    });
  });
});

describe('getOrdinalDay function unit test', () => {
  it('Returns correct ordinal for various days', () => {
    const testCases = [
      { day: 1, expected: '1st' },
      { day: 2, expected: '2nd' },
      { day: 3, expected: '3rd' },
      { day: 4, expected: '4th' },
      { day: 5, expected: '5th' },
      { day: 11, expected: '11th' },
      { day: 12, expected: '12th' },
      { day: 13, expected: '13th' },
      { day: 14, expected: '14th' },
      { day: 20, expected: '20th' },
      { day: 21, expected: '21st' },
      { day: 22, expected: '22nd' },
      { day: 23, expected: '23rd' },
      { day: 24, expected: '24th' },
      { day: 30, expected: '30th' },
      { day: 31, expected: '31st' }
    ];

    testCases.forEach(({ day, expected }) => {
      assert.strictEqual(getOrdinalDay(day), expected);
    });
  });
});