func quote(s string) string {
	const hex = "0123456789abcdef"
	var out strings.Builder
	out.WriteByte('"')
	for i := 0; i < len(s); i++ {
		c := s[i]
		if 0x20 <= c && c <= 0x7E && c != '"' && c != '\\' {
			out.WriteByte(c)
		} else {
			out.WriteByte('\\')
			out.WriteByte('x')
			out.WriteByte(hex[c>>4])
			out.WriteByte(hex[c&0xf])
		}
	}
	out.WriteByte('"')
	return out.String()

import org.gradle.internal.hash.HashCode.ByteArrayBackedHashCode
import org.gradle.internal.hash.HashCode.HashCode128
import spock.lang.Specification

class HashCodeTest extends Specification {
    def "can parse hex string #input"() {
        def hash = HashCode.fromString(input)

        expect:
        hash.toString() == input.toLowerCase(Locale.ROOT)
        hash.toByteArray() == bytes
        hash.length() == length

#SNG: from basn0g04.png
IHDR {
    width: 32; height: 32; bitdepth: 8;
    using grayscale;
}
gAMA {1.0000}
IMAGE {
    pixels hex
0000000011111111222222223333333344444444555555556666666677777777
0000000011111111222222223333333344444444555555556666666677777777
0000000011111111222222223333333344444444555555556666666677777777
0000000011111111222222223333333344444444555555556666666677777777
1111111122222222333333334444444455555555666666667777777788888888

See the License for the specific language governing permissions and
limitations under the License.
*/

package util

import (
	"crypto/sha1"
	"encoding/hex"
)

// This file is a common place holder for volume limit utility constants
// shared between volume package and scheduler

const (
	// EBSVolumeLimitKey resource name that will store volume limits for EBS

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package tls

import (
	"bytes"
	"crypto/internal/mlkem768"
	"encoding/hex"
	"hash"
	"strings"
	"testing"
	"unicode"
)

// This file contains tests derived from draft-ietf-tls-tls13-vectors-07.

func parseVector(v string) []byte {
	v = strings.Map(func(c rune) rune {

	if doubleCheck {
		srcRead := span.heapBitsSmallForAddr(x)
		if srcRead != src {
			print("runtime: x=", hex(x), " i=", i, " j=", j, " bits=", bits, "\n")
			print("runtime: dataSize=", dataSize, " typ.Size_=", typ.Size_, " typ.PtrBytes=", typ.PtrBytes, "\n")
			print("runtime: src0=", hex(src0), " src=", hex(src), " srcRead=", hex(srcRead), "\n")
			throw("bad pointer bits written for small object")
		}
	}
	return
}

#SNG: from ftp0n0g08.png
IHDR {
    width: 32; height: 32; bitdepth: 8;
    using grayscale;
}
gAMA {1.0000}
IMAGE {
    pixels hex
7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f
7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f7f
7f7f7f7f7f7f7f7f7f7f7f7f7f7fe3c9f17f7f7f7f7f7f7f7f7f7f7f7f7f7f7f
7f7f7f7f7f7f7f7f7f7f7fe8b57e655a4661a1e17f7f7f7f7f7f7f7f7f7f7f7f
7f7f7f7f7f7f7f7feebf8967614d362a2824282f5091d4fc7f7f7f7f7f7f7f7f

#SNG: from basn0g01.png
IHDR {
    width: 32; height: 32; bitdepth: 8;
    using grayscale;
}
gAMA {1.0000}
IMAGE {
    pixels hex
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff0000
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffff000000
ffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000
ffffffff0000ffffffffffff0000ffffffffffffffffffffffffff0000000000

#SNG: from basn0g08.png
IHDR {
    width: 32; height: 32; bitdepth: 8;
    using grayscale;
}
gAMA {1.0000}
IMAGE {
    pixels hex
000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f
202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f
404142434445464748494a4b4c4d4e4f505152535455565758595a5b5c5d5e5f
606162636465666768696a6b6c6d6e6f707172737475767778797a7b7c7d7e7f
808182838485868788898a8b8c8d8e8f909192939495969798999a9b9c9d9e9f

// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package modindex

import (
	"encoding/hex"
	"encoding/json"
	"go/build"
	"internal/diff"
	"path/filepath"
	"reflect"
	"runtime"
	"testing"
)

func init() {
	isTest = true
	enabled = true // to allow GODEBUG=goindex=0 go test, when things are very broken
}