func parseChunkSignature(chunk []byte) []byte {
	chunkSplits := bytes.SplitN(chunk, []byte(s3ChunkSignatureStr), 2)
	return chunkSplits[1]
}

// parse hex to uint64.
func parseHexUint(v []byte) (n uint64, err error) {
	for i, b := range v {
		switch {
		case '0' <= b && b <= '9':
			b -= '0'
		case 'a' <= b && b <= 'f':
			b = b - 'a' + 10
		case 'A' <= b && b <= 'F':

	if err != nil {
		t.Fatal(err)
	}

	// Put an initial object so it exists
	_, err = obj.PutObject(ctx, bucket, object,
		mustGetPutObjReader(t, bytes.NewReader([]byte("initial-value")),
			int64(len("initial-value")), "", ""), ObjectOptions{})
	if err != nil {
		t.Fatal(err)
	}

	// Get object info to capture the ETag
	objInfo, err := obj.GetObjectInfo(ctx, bucket, object, ObjectOptions{})
	if err != nil {

				i+1, test.result, got)
		}
	}
}

func TestGetCompressedOffsets(t *testing.T) {
	testCases := []struct {
		objInfo           ObjectInfo
		offset            int64
		startOffset       int64
		snappyStartOffset int64
		firstPart         int
	}{
		0: {
			objInfo: ObjectInfo{
				Parts: []ObjectPartInfo{
					{
						Size:       39235668,
						ActualSize: 67108864,
					},
					{

type erasureTestSetup struct {
	dataBlocks   int
	parityBlocks int
	blockSize    int64
	diskPaths    []string
	disks        []StorageAPI
}

// Returns an initialized setup for erasure tests.
func newErasureTestSetup(tb testing.TB, dataBlocks int, parityBlocks int, blockSize int64) (*erasureTestSetup, error) {
	diskPaths := make([]string, dataBlocks+parityBlocks)

// license that can be found in the LICENSE file.

package tar

import (
	"math"
	"strings"
	"testing"
	"time"
)

func TestFitsInBase256(t *testing.T) {
	vectors := []struct {
		in    int64
		width int
		ok    bool
	}{
		{+1, 8, true},
		{0, 8, true},
		{-1, 8, true},
		{1 << 56, 8, false},
		{(1 << 56) - 1, 8, true},
		{-1 << 56, 8, true},
		{(-1 << 56) - 1, 8, false},

// ShardFileSize - returns final erasure size from original size.
func (e ErasureInfo) ShardFileSize(totalLength int64) int64 {
	if totalLength == 0 {
		return 0
	}
	if totalLength == -1 {
		return -1
	}
	numShards := totalLength / e.BlockSize
	lastBlockSize := totalLength % e.BlockSize
	lastShardSize := ceilFrac(lastBlockSize, int64(e.DataBlocks))
	return numShards*e.ShardSize() + lastShardSize
}

type ObjectPartInfo struct {
	ETag       string            `json:"etag,omitempty" msg:"e"`
	Number     int               `json:"number" msg:"n"`
	Size       int64             `json:"size" msg:"s"`        // Size of the part on the disk.
	ActualSize int64             `json:"actualSize" msg:"as"` // Original size of the part without compression or encryption bytes.

			conn: &kmsConn{
				enclave:    env.Get(EnvKMSEnclave, ""),
				defaultKey: env.Get(EnvKMSDefaultKey, ""),
				client:     client,
			},
			latencyBuckets: defaultLatencyBuckets,
			latency:        make([]atomic.Uint64, len(defaultLatencyBuckets)),
		}, nil
	case lookup(EnvKESEndpoint):
		rawEndpoint := env.Get(EnvKESEndpoint, "")
		if rawEndpoint == "" {
			return nil, errors.New("kms: no KES server endpoint provided")
		}

// signed byte values.
// We compute and return both.
func (b *block) computeChecksum() (unsigned, signed int64) {
	for i, c := range b {
		if 148 <= i && i < 156 {
			c = ' ' // Treat the checksum field itself as all spaces.
		}
		unsigned += int64(c)
		signed += int64(int8(c))
	}
	return unsigned, signed
}

// reset clears the block with all zeros.
func (b *block) reset() {

var _healingMetric_index = [...]uint8{0, 6, 12, 31}

func (i healingMetric) String() string {
	if i >= healingMetric(len(_healingMetric_index)-1) {
		return "healingMetric(" + strconv.FormatInt(int64(i), 10) + ")"
	}
	return _healingMetric_name[_healingMetric_index[i]:_healingMetric_index[i+1]]