// 源码模式（CodeMirror 6）冒烟：能挂载、锚点 API 可用、改动经 onChange 回传。
import { describe, it, expect, afterEach } from 'vitest'
import { createRoot, type Root } from 'react-dom/client'
import { act } from 'react-dom/test-utils'
import SourceEditor, { type SourceEditorApi } from '../src/components/SourceEditor'

let root: Root | null = null
afterEach(() => {
  act(() => root?.unmount())
  root = null
  document.body.innerHTML = ''
})

describe('SourceEditor', () => {
  it('挂载 CodeMirror 并提供锚点/跳行 API', async () => {
    const md = '# 标题\n\n正文段落。\n'
    let api: SourceEditorApi | null = null
    const changes: string[] = []
    const container = document.createElement('div')
    document.body.appendChild(container)
    root = createRoot(container)
    await act(async () => {
      root!.render(
        <SourceEditor
          tabId="t1"
          initialText={md}
          initialCursorOffset={md.indexOf('正文')}
          dark={false}
          onChange={(t) => changes.push(t)}
          onReady={(a) => { api = a }}
        />,
      )
    })
    expect(container.querySelector('.cm-editor')).not.toBeNull()
    expect(api).not.toBeNull()
    expect(api!.getAnchor()).toEqual({ blockText: '正文段落。', offsetInBlock: 0 })
    act(() => api!.jumpToLine(0))
    expect(api!.getAnchor()?.blockText).toBe('标题')
  })
})