func TestChecksumAddToHeader(t *testing.T) {
	tests := []struct {
		name     string
		checksum ChecksumType
		fullobj  bool
		wantErr  bool
	}{
		{"CRC32-composite", ChecksumCRC32, false, false},
		{"CRC32-full-object", ChecksumCRC32, true, false},
		{"CRC32C-composite", ChecksumCRC32C, false, false},
		{"CRC32C-full-object", ChecksumCRC32C, true, false},

	ChecksumTrailing ChecksumType = 1 << iota

	// ChecksumSHA256 indicates a SHA256 checksum.
	ChecksumSHA256
	// ChecksumSHA1 indicates a SHA-1 checksum.
	ChecksumSHA1
	// ChecksumCRC32 indicates a CRC32 checksum with IEEE table.
	ChecksumCRC32
	// ChecksumCRC32C indicates a CRC32 checksum with Castagnoli table.
	ChecksumCRC32C
	// ChecksumInvalid indicates an invalid checksum.
	ChecksumInvalid

	ETag string

	// Size in bytes of the part.
	Size int64

	// Real size of the object uploaded by client.
	ActualSize int64

	// Checksum values
	ChecksumCRC32     string
	ChecksumCRC32C    string
	ChecksumSHA1      string
	ChecksumSHA256    string
	ChecksumCRC64NVME string
}

// CompletePart - represents the part that was completed, this is sent by the client

}

// Part container for part metadata.
type Part struct {
	PartNumber   int
	LastModified string
	ETag         string
	Size         int64

	// Checksum values
	ChecksumCRC32     string `xml:"ChecksumCRC32,omitempty"`
	ChecksumCRC32C    string `xml:"ChecksumCRC32C,omitempty"`
	ChecksumSHA1      string `xml:"ChecksumSHA1,omitempty"`
	ChecksumSHA256    string `xml:"ChecksumSHA256,omitempty"`

		case "Size":
			z.Size, bts, err = msgp.ReadInt64Bytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Size")
				return
			}
		case "ChecksumCRC32":
			z.ChecksumCRC32, bts, err = msgp.ReadStringBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "ChecksumCRC32")
				return
			}
		case "ChecksumCRC32C":
			z.ChecksumCRC32C, bts, err = msgp.ReadStringBytes(bts)
			if err != nil {

		return nil
	}
	if !c.Valid() {
		return fmt.Errorf("invalid base checksum")
	}
	if !other.Valid() {
		return fmt.Errorf("invalid part checksum")
	}

	switch c.Type.Base() {
	case ChecksumCRC32:
		v := crc32Combine(crc32.IEEE, binary.BigEndian.Uint32(c.Raw), binary.BigEndian.Uint32(other.Raw), size)
		binary.BigEndian.PutUint32(c.Raw, v)
	case ChecksumCRC32C:

			crc := expPart.Checksums[checksumType.String()]
			if crc == "" {
				return oi, InvalidPart{
					PartNumber: part.PartNumber,
				}
			}
			wantCS := map[string]string{
				hash.ChecksumCRC32.String():     part.ChecksumCRC32,
				hash.ChecksumCRC32C.String():    part.ChecksumCRC32C,
				hash.ChecksumSHA1.String():      part.ChecksumSHA1,
				hash.ChecksumSHA256.String():    part.ChecksumSHA256,

				})
			if err != nil {
				return fmt.Errorf("decommissionObject: PutObjectPart() %w", err)
			}
			parts[i] = CompletePart{
				ETag:           pi.ETag,
				PartNumber:     pi.PartNumber,
				ChecksumCRC32:  pi.ChecksumCRC32,
				ChecksumCRC32C: pi.ChecksumCRC32C,
				ChecksumSHA256: pi.ChecksumSHA256,
				ChecksumSHA1:   pi.ChecksumSHA1,
			}
		}

		}
		uploadedParts = append(uploadedParts, minio.CompletePart{
			PartNumber:        pInfo.PartNumber,
			ETag:              pInfo.ETag,
			ChecksumCRC32:     pInfo.ChecksumCRC32,
			ChecksumCRC32C:    pInfo.ChecksumCRC32C,
			ChecksumSHA1:      pInfo.ChecksumSHA1,
			ChecksumSHA256:    pInfo.ChecksumSHA256,
			ChecksumCRC64NVME: pInfo.ChecksumCRC64NVME,
		})
	}

		chkSums, _ := objInfo.decryptChecksums(0, r.Header)
		// AWS does not appear to append part number on this API call.
		if len(chkSums) > 0 {
			OA.Checksum = &objectAttributesChecksum{
				ChecksumCRC32:     strings.Split(chkSums["CRC32"], "-")[0],
				ChecksumCRC32C:    strings.Split(chkSums["CRC32C"], "-")[0],
				ChecksumSHA1:      strings.Split(chkSums["SHA1"], "-")[0],