import { describe, expect, test } from 'bun:test'
import { initializePostBodyMarkdownEditorVditor } from './post-body-markdown-editor-vditor-init'

function createDeferred<T>() {
  let resolve!: (value: T) => void
  let reject!: (reason?: unknown) => void
  const promise = new Promise<T>((res, rej) => {
    resolve = res
    reject = rej
  })
  return { promise, resolve, reject }
}

describe('PostBodyMarkdownEditor Vditor init helper', () => {
  test('卸载标记已置位时，import resolve 后不触发 mount', async () => {
    const deferred = createDeferred<{ default: new () => unknown }>()
    let unmounted = false
    let readyCalls = 0

    const task = initializePostBodyMarkdownEditorVditor({
      importVditor: () => deferred.promise,
      isUnmounted: () => unmounted,
      onReady: () => {
        readyCalls += 1
      },
    })

    unmounted = true
    deferred.resolve({ default: class MockVditor {} })
    await task

    expect(readyCalls).toBe(0)
  })

  test('import reject 时不抛出并走错误处理回调', async () => {
    const error = new Error('mock import failed')
    const handled: unknown[] = []

    await initializePostBodyMarkdownEditorVditor({
      importVditor: async () => {
        throw error
      },
      isUnmounted: () => false,
      onReady: () => {
        throw new Error('should not call onReady')
      },
      onError: (err) => handled.push(err),
    })

    expect(handled).toEqual([error])
  })
})