import { describe, expect, it } from 'vitest'
import { formatApiErrorDetail, nextTotalAfterLocalTaskAdd } from './mvp-utils'

describe('UI bugfix helpers', () => {
  it('formats FastAPI validation arrays into readable messages', () => {
    expect(formatApiErrorDetail([
      { loc: ['body', 'lunar_day'], msg: 'Input should be less than or equal to 30' },
      { loc: ['body', 'title'], msg: 'String should have at least 1 character' },
    ])).toBe('lunar_day：Input should be less than or equal to 30；title：String should have at least 1 character')
  })

  it('formats nested API detail objects instead of [object Object]', () => {
    expect(formatApiErrorDetail({ detail: [{ loc: ['body', 'event_date'], msg: 'Input should be a valid date' }] })).toBe('event_date：Input should be a valid date')
  })

  it('increments the visible total after a local quick-add insert', () => {
    expect(nextTotalAfterLocalTaskAdd(0)).toBe(1)
    expect(nextTotalAfterLocalTaskAdd(49)).toBe(50)
  })
})