response2, err := s.client.Do(request)
	c.Assert(err, nil)
	c.Assert(response2.StatusCode, http.StatusOK)

	// HTTP request to ListMultipart Uploads.
	request, err = newTestSignedRequest(http.MethodGet, getListMultipartURL(s.endPoint, bucketName),
		0, nil, s.accessKey, s.secretKey, s.signer)
	c.Assert(err, nil)
	// execute the HTTP request.
	response3, err := s.client.Do(request)
	c.Assert(err, nil)