// 使用HTML5的file.slice对文件进行切割，file.slice方法返回Blob对象
let start = 0;
while (start < file.size) {
    fileChunkList.push({ file: file.slice(start, start + CHUNK_SIZE) });
    start += CHUNK_SIZE;
}

// 部分代码展示
let spark = new SparkMD5.ArrayBuffer();
let fileReader = new FileReader();
fileReader.onload = e => {
    if (e.target && e.target.result) {
        count++;
        spark.append(e.target.result as ArrayBuffer);
    }
    if (count < totalCount) {
        loadNext();
    } else {
        resolve(spark.end());
    }
};
function loadNext() {
    fileReader.readAsArrayBuffer(fileChunkList[count].file);
}
loadNext();

// 部分代码展示
Axios.post(uploadChunkPath, formData, {
    headers: { 'Content-Type': 'multipart/form-data' },
    cancelToken: source.token,
}).then(()=>{
    // ...
})

// 部分代码展示
Axios.get(mergeChunkPath, {
    params: {
        fileHash: targetFile,
        fileName,
    },
})

/* 文件块请求放入数组 */
const source = CancelToken.source();
// ...
axiosList.push(source);

/* 暂停请求 */
axiosList.forEach((item) => item.cancel('abort'));
axiosList.length = 0;
message.error('上传暂停');

// 部分代码展示
let uploadedFileInfo = await getFileChunks(this.fileName, this.fileMd5Value);
if (this.handleUploaded(uploadedFileInfo.fileExist) && uploadedFileInfo.chunkList) {
    this.uploadChunks(this.chunkListInfo, uploadedFileInfo.chunkList, this.fileName);
}

if (fileInfo.isFileExist) {
 checkResponse.fileExist = true;
} else {
 const fileList = await ctx.service.file.getFileList(fileMd5Val);
 checkResponse.chunkList = fileList;
 checkResponse.fileExist = false;
}
ctx.body = checkResponse;

import { IncomingForm } from 'formidable';
const form = new IncomingForm();
form.parse(req, async (err, fields, file) => {
  if (err) return err;
  const md5AndFileNo = fields.md5AndFileNo;
  const fileHash = fields.fileHash;
  const chunkFolder = resolve(this.config.uploadsPath, fileHash as string);
  if (!existsSync(chunkFolder)) {
    await mkdirs(chunkFolder);
  }
  move(file.chunk.path, resolve(`${chunkFolder}/${md5AndFileNo}`));
});

const readStream = createReadStream(path);
readStream.on('end', () => {
 unlinkSync(path);
 resolve();
});
readStream.pipe(writeStream);

describe('api/checkChunk', () => {
  // 文件不存在的情况
  it('should GET / file nonExist', async () => {
    const testHash = 'e62d28dd31fc4d1e92a81e7ae5be3cc6';
    const result = await app.httpRequest()
      .get('/api/checkChunk')
      .query({ fileName: '归档 2.zip', fileMd5Val: testHash })
      .expect(200);
    assert.deepEqual(result.body, { hash: testHash, fileExist: false, chunkList: [] });
  });
});