{"bytes=1-10", 1, 9},
		{"bytes=1-1", 1, 1},
		{"bytes=2-5", 2, 4},
		{"bytes=-5", 5, 5},
		{"bytes=-1", 9, 1},
		{"bytes=-1000", 0, 10},
	}
	for i, testCase := range validRangeSpecs {
		rs, err := parseRequestRangeSpec(testCase.spec)
		if err != nil {
			t.Errorf("unexpected err: %v", err)
		}
		o, l, err := rs.GetOffsetLength(resourceSize)
		if err != nil {
			t.Errorf("unexpected err: %v", err)
		}

// for full details. This function treats an empty rangeString as
// referring to the whole resource.
func parseCopyPartRangeSpec(rangeString string) (hrange *HTTPRangeSpec, err error) {
	hrange, err = parseRequestRangeSpec(rangeString)
	if err != nil {
		return nil, err
	}
	if hrange.IsSuffixLength || hrange.Start < 0 || hrange.End < 0 {
		return nil, errInvalidRange
	}
	return hrange, nil
}

	if h.IsSuffixLength {
		start = resourceSize + h.Start
		if start < 0 {
			start = 0
		}
	}
	return start, length, nil
}

// Parse a HTTP range header value into a HTTPRangeSpec
func parseRequestRangeSpec(rangeString string) (hrange *HTTPRangeSpec, err error) {
	// Return error if given range string doesn't start with byte range prefix.
	if !strings.HasPrefix(rangeString, byteRangePrefix) {

			}
		}
	}
}

// Tests for issue reproduced when getting the right encrypted
// offset of the object.
func TestGetDecryptedRange_Issue50(t *testing.T) {
	rs, err := parseRequestRangeSpec("bytes=594870256-594870263")
	if err != nil {
		t.Fatal(err)
	}

	objInfo := ObjectInfo{
		Bucket: "bucket",
		Name:   "object",
		Size:   595160760,
		UserDefined: map[string]string{

	if rangeHeader != "" {
		rs, _ = parseRequestRangeSpec(rangeHeader)
	}

	if rangeHeader != "" {
		// Both 'Range' and 'partNumber' cannot be specified at the same time
		if opts.PartNumber > 0 {
			writeErrorResponseHeadersOnly(w, errorCodes.ToAPIErr(ErrInvalidRangePartNumber))
			return
		}

		if rs, err = parseRequestRangeSpec(rangeHeader); err != nil {

				instanceType, object, i+1, byteRange, rec.Code, string(bd), err1)
		}

		var off, length int64
		var rs *HTTPRangeSpec
		if byteRange != "" {
			rs, err = parseRequestRangeSpec(byteRange)
			if err != nil {
				t.Fatalf("Object: %s Case %d ByteRange: %s: Unexpected err: %v", object, i+1, byteRange, err)
			}
		}
		off, length, err = rs.GetOffsetLength(objectLength(oi))