gistfile1.txt

import { GCS_BUCKET_NAME_MEDIA } from '../config/storage';
import { MediaGenerateThumbsOnWrite } from './media-thumbs.function';
import { ObjectMetadata } from 'firebase-functions/lib/providers/storage';
import { ObjectWritableMock } from 'stream-mock';
import { DownloadResponse } from '@google-cloud/storage';

// tslint:disable-next-line
const { Storage } = require('@google-cloud/storage');
jest.mock('@google-cloud/storage');


const createWriteStream = jest.fn(() => new ObjectWritableMock());
const makePublic = jest.fn();
const file = jest.fn(() => ({ download }));
const upload = jest.fn(name => Promise.resolve());
const bucket = jest.fn(() => ({ file, upload }));
const download = jest.fn(() => Promise.resolve<DownloadResponse>([new Buffer('\u00bd + \u00bc = \u00be')]));
const resize = jest.fn();
const toFile = jest.fn();
const sharp = jest.fn(() => ({ resize, toFile }));

Storage.mockImplementation(() => ({ bucket }));


it('MediaGenerateThumbsOnWrite: should create thumbs for new media in the GCS bucket', async () => {
  const data = {
    bucket: GCS_BUCKET_NAME_MEDIA,
    name: '/path/of/the/media.png'
  };
  
  await MediaGenerateThumbsOnWrite(data as ObjectMetadata);
});