public void testBytes() {
    Sink sink = new Sink(4); // byte order insignificant here
    byte[] expected = {1, 2, 3, 4, 5, 6, 7, 8};
    sink.putByte((byte) 1);
    sink.putBytes(new byte[] {2, 3, 4, 5, 6});
    sink.putByte((byte) 7);
    sink.putBytes(new byte[] {});
    sink.putBytes(new byte[] {8});
    HashCode unused = sink.hash();
    sink.assertInvariants(8);
    sink.assertBytes(expected);

	// Limit of location constraint XML for unauthenticated PUT bucket operations.
	maxLocationConstraintSize = 3 * humanize.MiByte

	// Maximum size of default bucket encryption configuration allowed
	maxBucketSSEConfigSize = 1 * humanize.MiByte

	// diskFillFraction is the fraction of a disk we allow to be filled.
	diskFillFraction = 0.99

		bucket    string
		versioned bool
		object    string
		content   []byte
	}{
		{"bucket1", false, "object1", []byte("aaaaaaaaaaaaaaaa")},
		{"bucket2", false, "object2", bytes.Repeat([]byte{'a'}, smallFileThreshold*2)},
		{"bucket3", true, "version1", []byte("aaaaaaaaaaaaaaaa")},
		{"bucket4", true, "version2", bytes.Repeat([]byte{'a'}, smallFileThreshold*2)},
	}

	for i, testCase := range testCases {

   * malformed.
   */
  @Throws(IOException::class)
  fun checkLowercase(name: ByteString): ByteString {
    for (i in 0 until name.size) {
      if (name[i] in 'A'.code.toByte()..'Z'.code.toByte()) {
        throw IOException("PROTOCOL_ERROR response malformed: mixed case name: ${name.utf8()}")
      }
    }
    return name
  }

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

	// Upload a part
	partData := bytes.Repeat([]byte("a"), 5*humanize.MiByte)
	md5Hex := getMD5Hash(partData)
	_, err = obj.PutObjectPart(ctx, bucket, object, res.UploadID, 1,
		mustGetPutObjReader(t, bytes.NewReader(partData), int64(len(partData)), md5Hex, ""),
		ObjectOptions{})
	if err != nil {
		t.Fatal(err)
	}

}

// randomly picks a character and returns its equivalent byte array.
func getRandomByte() []byte {
	const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
	// seeding the random number generator.
	rand.Seed(UTCNow().UnixNano())
	// pick a character randomly.
	return []byte{letterBytes[rand.Intn(len(letterBytes))]}
}

// picks a random byte and repeats it to size bytes.

	// Profile recorded at start of benchmark.
	records map[string][]byte
	stopFn  func() ([]byte, error)
	ext     string
}

// record will record the profile and store it as the base.
func (p *profilerWrapper) record(profileType string, debug int, recordName string) {
	var buf bytes.Buffer
	if p.records == nil {
		p.records = make(map[string][]byte)
	}
	err := pprof.Lookup(profileType).WriteTo(&buf, debug)

}

func testStorageAPIAppendFile(t *testing.T, storage StorageAPI) {
	testData := []byte("foo")
	testCases := []struct {
		volumeName      string
		objectName      string
		data            []byte
		expectErr       bool
		ignoreIfWindows bool
	}{
		{"foo", "myobject", testData, false, false},
		{"foo", "myobject-0byte", []byte{}, false, false},
		// volume not found error.

	SigningMethodHS384 *SigningMethodHMAC
	SigningMethodHS512 *SigningMethodHMAC
)

const base64BufferSize = 64 * humanize.KiByte

var (
	base64BufPool bpool.Pool[*[]byte]
	hmacSigners   []*SigningMethodHMAC
)

func init() {
	base64BufPool = bpool.Pool[*[]byte]{
		New: func() *[]byte {
			buf := make([]byte, base64BufferSize)
			return &buf
		},
	}

	hmacSigners = []*SigningMethodHMAC{

	if err != nil {
		t.Fatalf("failed to create ErasureStorage: %v", err)
	}
	// Prepare a slice of 5MiB with random data.
	data := make([]byte, 5*humanize.MiByte)
	length := int64(len(data))
	_, err = rand.Read(data)
	if err != nil {
		t.Fatal(err)
	}

	writers := make([]io.Writer, len(disks))
	for i, disk := range disks {
		if disk == nil {
			continue
		}