// RDM 角色权限面板拒绝态（2026-10-13 8788 dev 锁死复现）：rdm.role.list 被拒后
// 表格停留「加载中…」且错误为原始 400 JSON——测纯函数两件事：占位行不再假装
// 加载中；域管理员权限拒绝映射为人话 + 恢复通道。UI 不重算权限（KTD5），文案
// 只描述拒绝事实，不判权限。
import { describe, expect, it } from 'vitest'
import { rolesListPlaceholder, describeRoleListError } from '../src/rdmManagement'

describe('rolesListPlaceholder', () => {
  it('keeps 加载中 only while loading without error', () => {
    expect(rolesListPlaceholder(null, '')).toBe('加载中…')
  })

  it('replaces the loading row with a failure row once the fetch rejected', () => {
    expect(rolesListPlaceholder(null, 'Error: 400: {"receipt":…}')).toBe('角色清单未加载（见下方提示）')
  })

  it('returns the empty label for an empty list and nothing otherwise', () => {
    expect(rolesListPlaceholder([], '')).toBe('暂无专业角色')
    expect(rolesListPlaceholder([{ roleId: 'r1' }], '')).toBe('')
    // 已有数据时即便残留 err 也不再渲染占位行（表格有内容即事实来源）
    expect(rolesListPlaceholder([{ roleId: 'r1' }], 'stale')).toBe('')
  })
})

describe('describeRoleListError', () => {
  const denied = 'Error: 400: {"receipt":{"commandId":"rdm.role.list","state":"rejected",'
    + '"reason":"rejected: 权限拒绝：weichen 不是系统管理员（全局动作 project.settings）"}}'

  it('maps the domain-admin denial to a readable message with the transfer channel', () => {
    const got = describeRoleListError(denied)
    expect(got).toContain('不是 RDM 域管理员')
    expect(got).toContain('rdm.perm.transfer')
    expect(got).not.toContain('"receipt"')
  })

  it('passes other errors through untouched', () => {
    expect(describeRoleListError('Error: 500: boom')).toBe('Error: 500: boom')
  })
})