go func() {
			defer wg.Done()

			contentLen := fmt.Sprintf("Content-Length: %d", test.contentLength)
			if test.chunked {
				contentLen = "Transfer-Encoding: chunked"
			}
			_, err := fmt.Fprintf(conn, "POST /?readbody=%v HTTP/1.1\r\n"+
				"Connection: close\r\n"+
				"%s\r\n"+
				"Expect: %s\r\nHost: foo\r\n\r\n",
				test.readBody, contentLen, test.expectation)
			if err != nil {

	for _, e := range extensions {
		if e.Id.Equal(oid) {
			return true
		}
	}
	return false
}

// marshalSANs marshals a list of addresses into a the contents of an X.509
// SubjectAlternativeName extension.
func marshalSANs(dnsNames, emailAddresses []string, ipAddresses []net.IP, uris []*url.URL) (derBytes []byte, err error) {
	var rawValues []asn1.RawValue

// the hash digest instead of creating a new one for a given chunk and finalizing it.
//
//	// Assume hashfd and addr are already configured using the setup process.
//	hash := os.NewFile(hashfd, "sha1")
//	// Hash the contents of a file.
//	f, _ := os.Open("/tmp/linux-4.10-rc7.tar.xz")
//	b := make([]byte, 4096)
//	for {
//	    n, err := f.Read(b)
//	    if err == io.EOF {
//	        break
//	    }

	t.Parallel()

	filename := "rumpelstilzchen"
	contents, err := ReadFile(filename)
	if err == nil {
		t.Fatalf("ReadFile %s: error expected, none found", filename)
	}

	filename = "read_test.go"
	contents, err = ReadFile(filename)
	if err != nil {
		t.Fatalf("ReadFile %s: %v", filename, err)
	}

	checkNamedSize(t, filename, int64(len(contents)))
}

func TestWriteFile(t *testing.T) {
	t.Parallel()

	"internal/filepathlite"
	"io"
	"io/fs"
	"slices"
)

type readdirMode int

const (
	readdirName readdirMode = iota
	readdirDirEntry
	readdirFileInfo
)

// Readdir reads the contents of the directory associated with file and
// returns a slice of up to n [FileInfo] values, as would be returned
// by [Lstat], in directory order. Subsequent calls on the same file will yield
// further FileInfos.
//

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

package net

import (
	"internal/poll"
	"io"
	"os"
)

const supportsSendfile = true

// sendFile copies the contents of r to c using the sendfile
// system call to minimize copies.
//
// if handled == true, sendFile returns the number (potentially zero) of bytes
// copied and any non-EOF error.
//

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

package net

import (
	"internal/poll"
	"io"
	"os"
	"syscall"
)

const supportsSendfile = true

// sendFile copies the contents of r to c using the TransmitFile
// system call to minimize copies.
//
// if handled == true, sendFile returns the number of bytes copied and any
// non-EOF error.
//
// if handled == false, sendFile performed no work.

import (
	"cmd/internal/cov/covcmd"
	"encoding/json"
	"fmt"
	"internal/testenv"
	"os"
	"path/filepath"
	"strings"
	"testing"
)

func writeFile(t *testing.T, path string, contents []byte) {
	if err := os.WriteFile(path, contents, 0666); err != nil {
		t.Fatalf("os.WriteFile(%s) failed: %v", path, err)
	}
}

func writePkgConfig(t *testing.T, outdir, tag, ppath, pname string, gran string, mpath string) string {

	noteTypeGNUBuildID = 3
)

// elfNote is the payload of a Note Section in an ELF file.
type elfNote struct {
	Name string // Contents of the "name" field, omitting the trailing zero byte.
	Desc []byte // Contents of the "desc" field.
	Type uint32 // Contents of the "type" field.
}

// parseNotes returns the notes from a SHT_NOTE section or PT_NOTE segment.

// As a special case, if no expected files are listed, fsys must be empty.
// Otherwise, fsys must contain at least the listed files; it can also contain others.
// The contents of fsys must not change concurrently with TestFS.
//
// If TestFS finds any misbehaviors, it returns either the first error or a
// list of errors. Use [errors.Is] or [errors.As] to inspect.
//