r := bytes.NewReader(b)
	segmentReader := func(offset int64) (io.ReadCloser, error) {
		_, err := r.Seek(offset, io.SeekStart)
		if err != nil {
			return nil, err
		}
		return io.NopCloser(r), nil
	}
	return NewObjectReadSeekCloser(segmentReader, int64(len(b)))
}

type testResponseWriter struct {
	statusCode int
	response   []byte
}

func (w *testResponseWriter) Header() http.Header {

	if err != nil {
		t.Fatal(failTestStr(anonTestStr, err.Error()))
	}

	// creating 2 read closer (to set as request body) from the body content.
	readerOne := io.NopCloser(bytes.NewBuffer(buf))
	readerTwo := io.NopCloser(bytes.NewBuffer(buf))

	anonReq.Body = readerOne

	// call the HTTP handler.
	apiRouter.ServeHTTP(rec, anonReq)

		c.Fatalf("unexpected encryption err: %v", err)
	}

	req.ContentLength = int64(len(buf))
	sum := sha256.Sum256(buf)
	req.Header.Set("X-Amz-Content-Sha256", hex.EncodeToString(sum[:]))
	req.Body = io.NopCloser(bytes.NewReader(buf))
	req = signer.SignV4(*req, accessKey, secretKey, "", "")

	// 3.1 Execute the request.
	resp, err := s.TestSuiteCommon.client.Do(req)
	if err != nil {

					found++
					var r io.ReadCloser
					if !si.Dir {
						r, err = disk.ReadFileStream(ctx, volume, si.Name, 0, si.Size)
						if err != nil {
							continue
						}
					} else {
						r = io.NopCloser(bytes.NewBuffer([]byte{}))
					}
					// Keep disk path instead of ID, to ensure that the downloaded zip file can be
					// easily automated with `minio server hostname{1...n}/disk{1...m}`.