bf := bufio.NewReader(r)
	switch f := detect(bf); f {
	case formatGzip:
		gz, err := gzip.NewReader(bf)
		if err != nil {
			return err
		}
		defer gz.Close()
		r = gz
	case formatS2:
		r = s2.NewReader(bf)
	case formatZstd:
		// Limit to 16 MiB per stream.
		dec, err := zstd.NewReader(bf, zstd.WithDecoderMaxWindow(16<<20))
		if err != nil {

package multipart

import (
	"bytes"
	"fmt"
	"io"
	"math"
	"net/textproto"
	"os"
	"strings"
	"testing"
)

func TestReadForm(t *testing.T) {
	b := strings.NewReader(strings.ReplaceAll(message, "\n", "\r\n"))
	r := NewReader(b, boundary)
	f, err := r.ReadForm(25)
	if err != nil {
		t.Fatal("ReadForm:", err)
	}
	defer f.RemoveAll()
	if g, e := f.Value["texta"][0], textaValue; g != e {

			runtime.GC()
			b.StartTimer()
			for i := 0; i < b.N; i++ {
				io.Copy(io.Discard, NewReader(bytes.NewReader(buf1), LSB, 8))
			}
		})
		b.Run(fmt.Sprint("1e-Reuse", e), func(b *testing.B) {
			b.StopTimer()
			b.SetBytes(int64(n))
			buf1 := getInputBuf(buf, n)
			runtime.GC()
			b.StartTimer()
			r := NewReader(bytes.NewReader(buf1), LSB, 8)
			for i := 0; i < b.N; i++ {
				io.Copy(io.Discard, r)
				r.Close()

	f.Fuzz(func(t *testing.T, b []byte) {
		cmd := exec.Command(zstd, "-z")
		cmd.Stdin = bytes.NewReader(b)
		var compressed bytes.Buffer
		cmd.Stdout = &compressed
		cmd.Stderr = os.Stderr
		if err := cmd.Run(); err != nil {
			t.Errorf("running zstd failed: %v", err)
		}

		r := NewReader(bytes.NewReader(compressed.Bytes()))
		got, err := io.ReadAll(r)
		if err != nil {
			t.Fatal(err)
		}

	// getters can be made to panic. Turn this on once the parser is meant to
	// reject invalid traces.
	const testGetters = false

	f.Fuzz(func(t *testing.T, b []byte) {
		r, err := trace.NewReader(bytes.NewReader(b))
		if err != nil {
			return
		}
		for {
			ev, err := r.ReadEvent()
			if err != nil {
				break
			}

			if !testGetters {
				continue
			}

func TestEmpty(t *testing.T) {
	buf := new(bytes.Buffer)

	if err := NewWriter(buf).Close(); err != nil {
		t.Fatalf("Writer.Close: %v", err)
	}

	r, err := NewReader(buf)
	if err != nil {
		t.Fatalf("NewReader: %v", err)
	}
	if want := (Header{OS: 255}); !reflect.DeepEqual(r.Header, want) {
		t.Errorf("Header mismatch:\ngot  %#v\nwant %#v", r.Header, want)
	}
	b, err := io.ReadAll(r)
	if err != nil {

	input := `<FOO></FOO>  `
	d := NewDecoder(strings.NewReader(input))
	var err error
	for _, err = d.RawToken(); err == nil; _, err = d.RawToken() {
	}
	if err != io.EOF {
		t.Fatalf("d.RawToken() = _, %v, want _, io.EOF", err)
	}
}

func TestTrailingToken(t *testing.T) {
	input := `<FOO></FOO>  `
	d := NewDecoder(strings.NewReader(input))
	var err error

		expectedValue := prefix + `
			apiserver_authorization_decisions_total{decision="allowed",name="myname",type="mytype"} 1
		`
		if err := testutil.GatherAndCompare(legacyregistry.DefaultGatherer, strings.NewReader(expectedValue), metrics...); err != nil {
			t.Fatal(err)
		}
		authorizationDecisionsTotal.Reset()
	}

	// deny
	{
		dummyAuthorizer.decision = authorizer.DecisionDeny

	}

	vn := BaseOptions{}
	err := msgp.Decode(&buf, &vn)
	if err != nil {
		t.Error(err)
	}

	buf.Reset()
	msgp.Encode(&buf, &v)
	err = msgp.NewReader(&buf).Skip()
	if err != nil {
		t.Error(err)
	}
}

func BenchmarkEncodeBaseOptions(b *testing.B) {
	v := BaseOptions{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))

	}

	vn := localLockMap{}
	err := msgp.Decode(&buf, &vn)
	if err != nil {
		t.Error(err)
	}

	buf.Reset()
	msgp.Encode(&buf, &v)
	err = msgp.NewReader(&buf).Skip()
	if err != nil {
		t.Error(err)
	}
}

func BenchmarkEncodelocalLockMap(b *testing.B) {
	v := localLockMap{}
	var buf bytes.Buffer
	msgp.Encode(&buf, &v)
	b.SetBytes(int64(buf.Len()))