/**
 * 26-preview: Preview Vue 组件化测试
 */
import { describe, it, expect, beforeEach, afterEach } from 'vitest'
import { h, render, nextTick } from 'vue'
import PreviewComponent from '../../src/apps/preview/Preview.vue'
import { setupDOM } from '../helpers'

function makeMockWin() {
  const el = document.createElement('div'); el.className = 'window'
  document.getElementById('window-layer')?.appendChild(el)
  const body = document.createElement('div'); body.className = 'win-body'
  el.appendChild(body)
  return { id: 'pv', appId: 'preview', el, body, timers: [] as any[], data: {} }
}

describe('26-preview — Preview Vue 组件化', () => {
  let win: any
  beforeEach(() => { setupDOM(); win = makeMockWin() })
  afterEach(() => { render(null, win.body); win.el.remove() })

  function mount() { const v = h(PreviewComponent, { win }); render(v, win.body) }

  it('挂载后渲染画廊', () => { mount(); expect(win.body.querySelector('.preview-gallery')).toBeTruthy() })
  it('工具栏有缩放/旋转按钮', () => {
    mount()
    expect(win.body.querySelector('.fb-btn[title="放大"]')).toBeTruthy()
    expect(win.body.querySelector('.fb-btn[title="缩小"]')).toBeTruthy()
  })
  it('暴露 zoom/zoomReset 给菜单', () => {
    mount()
    expect(typeof win.appState.zoom).toBe('function')
    expect(typeof win.appState.zoomReset).toBe('function')
  })
  it('卸载后 DOM 为空', () => { mount(); render(null, win.body); expect(win.body.children.length).toBe(0) })
})