request, err = newTestSignedRequest(http.MethodHead, getHeadObjectURL(s.endPoint, bucketName, "my-object-directory/"),
		0, nil, s.accessKey, s.secretKey, s.signer)
	c.Assert(err, nil)

	// execute the HTTP request.
	response, err = s.client.Do(request)

	c.Assert(err, nil)
	c.Assert(response.StatusCode, http.StatusOK)

}

// Various signature types we are supporting, currently
// two main signature types.
type signerType int

const (
	signerV2 signerType = iota
	signerV4
)

func newTestSignedRequest(method, urlStr string, contentLength int64, body io.ReadSeeker, accessKey, secretKey string, signer signerType) (*http.Request, error) {
	if signer == signerV2 {