cfc/cfc-frontend/__tests__/utils/image-picker.test.js

import { compressPickedImages } from '../../utils/image-picker'

function run(paths, files) {
  return new Promise(resolve => {
    compressPickedImages(paths, files, resolve)
  })
}

describe('image-picker 上传前压缩', () => {
  afterEach(() => {
    delete global.uni
  })

  it('小于 800KB 的图片不压缩', async () => {
    global.uni = { compressImage: jest.fn() }
    const result = await run(['a.jpg'], [{ size: 100 * 1024 }])
    expect(result).toEqual(['a.jpg'])
    expect(global.uni.compressImage).not.toHaveBeenCalled()
  })

  it('大图压缩成功时返回压缩后的临时路径', async () => {
    global.uni = {
      compressImage: jest.fn(opts => opts.success({ tempFilePath: 'a-compressed.jpg' }))
    }
    const result = await run(['a.jpg'], [{ size: 6 * 1024 * 1024 }])
    expect(result).toEqual(['a-compressed.jpg'])
    expect(global.uni.compressImage).toHaveBeenCalledWith(expect.objectContaining({
      src: 'a.jpg',
      quality: 75
    }))
  })

  it('压缩失败时回退原图', async () => {
    global.uni = {
      compressImage: jest.fn(opts => opts.fail(new Error('compress failed')))
    }
    const result = await run(['a.jpg'], [{ size: 6 * 1024 * 1024 }])
    expect(result).toEqual(['a.jpg'])
  })

  it('未知大小或缺少压缩 API 时不影响选择结果', async () => {
    global.uni = {}
    const result = await run(['a.jpg', 'b.png'], [{}, {}])
    expect(result).toEqual(['a.jpg', 'b.png'])
  })
})