import { test } from 'node:test'
import assert from 'node:assert/strict'
import { formatDateTime } from '../src/shared/utils/datetime.ts'

// 用本地时间构造再往返 ISO，期望值由同一本地时区还原，避免依赖运行环境的时区。
test('formatDateTime 空值返回 -', () => {
  assert.equal(formatDateTime(undefined), '-')
  assert.equal(formatDateTime(''), '-')
})

test('formatDateTime 无法解析时原样返回', () => {
  assert.equal(formatDateTime('not-a-date'), 'not-a-date')
})

test('formatDateTime 按 YYYY-MM-DD HH:mm:ss 补零（个位月/日/时/分/秒）', () => {
  const local = new Date(2026, 0, 5, 9, 7, 3)
  assert.equal(formatDateTime(local.toISOString()), '2026-01-05 09:07:03')
})

test('formatDateTime 年末边界', () => {
  const local = new Date(2026, 11, 31, 23, 59, 59)
  assert.equal(formatDateTime(local.toISOString()), '2026-12-31 23:59:59')
})