测试(Mock)

本库依赖 react-native-vision-camera 等 native 模块，jest 环境无法直接加载。消费者在测试里 mock 本库：

jest.mock('@unif/react-native-camera', () =>
  require('@unif/react-native-camera/mock')
);

mock 后 useCamera() 返回 [api, null]，api.open / api.close 是 jest.fn，open 默认 resolve { code: 0, data: [], message: 'cancelled' }。

覆盖单次返回

按需用 mockResolvedValueOnce 覆盖 open 的返回值：

const [api] = useCamera();
(api.open as jest.Mock).mockResolvedValueOnce({
  code: 200,
  data: [
    {
      id: '1700000000000-0',
      cameraType: 'back',
      cameraMode: 'single',
      path: '/x.jpg',
      uri: 'file:///x.jpg',
      width: 1,
      height: 1,
      mime: 'image/jpeg',
      mode: 'single',
    },
  ],
  message: 'ok',
});

工具函数与类型

工具函数（toFileUri / buildPhotoFile 等）与所有类型在 mock 中保留真实实现，无需额外 stub。

完整示例

import { useCamera } from '@unif/react-native-camera';

jest.mock('@unif/react-native-camera', () =>
  require('@unif/react-native-camera/mock')
);

describe('拍照流程', () => {
  it('用户取消时 code 为 0', async () => {
    const [api] = useCamera();
    // open 默认 resolve { code: 0, data: [], message: 'cancelled' }
    const result = await api.open({ cameraMode: [{ mode: 'single' }], dataRetainedMode: 'clear' });
    expect(result.code).toBe(0);
  });

  it('拍照成功时返回文件列表', async () => {
    const [api] = useCamera();
    (api.open as jest.Mock).mockResolvedValueOnce({
      code: 200,
      data: [
        {
          id: '1700000000000-0',
          cameraType: 'back',
          cameraMode: 'single',
          path: '/x.jpg',
          uri: 'file:///x.jpg',
          width: 1,
          height: 1,
          mime: 'image/jpeg',
          mode: 'single',
        },
      ],
      message: 'ok',
    });
    const result = await api.open({ cameraMode: [{ mode: 'single' }], dataRetainedMode: 'clear' });
    expect(result.code).toBe(200);
    expect(result.data).toHaveLength(1);
  });
});