import { describe, expect, it } from 'vitest'
import { generateIdempotencyKey } from '@/lib/idempotencyKey'

describe('generateIdempotencyKey', () => {
  it('returns a string within the backend 6..30 char range', () => {
    const key = generateIdempotencyKey()

    expect(key.length).toBeGreaterThanOrEqual(6)
    expect(key.length).toBeLessThanOrEqual(30)
  })

  it('produces 24-hex output when crypto.randomUUID is available', () => {
    const key = generateIdempotencyKey()

    expect(key).toMatch(/^[0-9a-f]{24}$/)
  })

  it('successive calls return different values (very high probability)', () => {
    const a = generateIdempotencyKey()
    const b = generateIdempotencyKey()

    expect(a).not.toBe(b)
  })
})