import { test } from 'node:test';
import assert from 'node:assert/strict';
import { formatSize, formatAdminDate } from '../../web/src/displayFormat.js';

test('shared display sizes use decimal KB below 1MB and switch only at MB/GB boundaries', () => {
  for (const [bytes, expected] of [
    [0, '0KB'],
    [10, '1KB 미만'],
    [1000, '1KB'],
    [938000, '938KB'],
    [999000, '999KB'],
    [1000000, '1.0MB'],
    [1100000, '1.1MB'],
    [1000000000, '1.0GB'],
    [1700000000, '1.7GB'],
    [7687e9, '7,687.0GB'],
    [1234567e9, '1,234,567.0GB'],
  ])
    assert.equal(formatSize(bytes), expected);
});

test('admin dates include year and unambiguous Korea 24-hour time independent of host timezone', () => {
  assert.equal(formatAdminDate(Date.parse('2026-10-22T02:02:00Z')), '2026년 10월 22일 11:02');
  assert.equal(formatAdminDate(Date.parse('2026-10-21T15:02:00Z')), '2026년 10월 22일 00:02');
  assert.equal(formatAdminDate(null), '확인 불가');
});