marshaler, ok := first.(encoding.BinaryMarshaler)
	if !ok {
		log.Fatal("first does not implement encoding.BinaryMarshaler")
	}
	state, err := marshaler.MarshalBinary()
	if err != nil {
		log.Fatal("unable to marshal hash:", err)
	}

	second := sha256.New()

	unmarshaler, ok := second.(encoding.BinaryUnmarshaler)
	if !ok {
		log.Fatal("second does not implement encoding.BinaryUnmarshaler")
	}

	v := CondCheck{}
	bts, err := v.MarshalMsg(nil)
	if err != nil {
		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
	}

	left, err = msgp.Skip(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after Skip(): %q", len(left), left)

	req, err := http.NewRequest(http.MethodGet, testServer.URL, nil)
	if err != nil {
		t.Fatal(err)
	}
	response, err := rt.RoundTrip(req)
	if err != nil {
		t.Fatal(err)
	}
	if response.StatusCode != http.StatusOK {
		dump, err := httputil.DumpResponse(response, true)
		if err != nil {
			t.Fatal(err)
		}
		t.Fatal(string(dump))
	}

	if err != nil {
		t.Fatal(err)
	}
	uniStats, err := validateInterfaceUnicastAddrs(ifat)
	if err != nil {
		t.Fatal(err)
	}
	if err := checkUnicastStats(ifStats, uniStats); err != nil {
		t.Fatal(err)
	}
}

func TestInterfaceUnicastAddrs(t *testing.T) {
	ift, err := Interfaces()
	if err != nil {
		t.Fatal(err)
	}
	ifStats := interfaceStats(ift)
	if err != nil {
		t.Fatal(err)
	}

	cc := certCache{}
	p, _ := pem.Decode([]byte(rsaCertPEM))
	if p == nil {
		t.Fatal("Failed to decode certificate")
	}

	certA, err := cc.newCert(p.Bytes)
	if err != nil {
		t.Fatalf("newCert failed: %s", err)
	}
	certB, err := cc.newCert(p.Bytes)
	if err != nil {
		t.Fatalf("newCert failed: %s", err)
	}
	if certA.cert != certB.cert {
		t.Fatal("newCert returned a unique reference for a duplicate certificate")
	}

	v := AccElem{}
	bts, err := v.MarshalMsg(nil)
	if err != nil {
		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
	}

	left, err = msgp.Skip(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after Skip(): %q", len(left), left)

	v := BatchJobExpire{}
	bts, err := v.MarshalMsg(nil)
	if err != nil {
		t.Fatal(err)
	}
	left, err := v.UnmarshalMsg(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after UnmarshalMsg(): %q", len(left), left)
	}

	left, err = msgp.Skip(bts)
	if err != nil {
		t.Fatal(err)
	}
	if len(left) > 0 {
		t.Errorf("%d bytes left over after Skip(): %q", len(left), left)

package main

import (
	"fmt"
	"os"
)

func main() {
	if len(os.Args) != 2 {
		fatal("usage: callback testname")
	}
	switch os.Args[1] {
	default:
		fatal("unknown test %q", os.Args[1])
	case "Call":
		testCall()
	case "Callback":
		testCallback()
	}
	println("OK")
}

func fatal(f string, args ...any) {
	fmt.Fprintln(os.Stderr, fmt.Sprintf(f, args...))
	os.Exit(1)
}

	if err == nil {
		t.Fatal("Expected for Lock to fail")
	}

	_, err = lkClient.RUnlock(context.Background(), dsync.LockArgs{})
	if err == nil {
		t.Fatal("Expected for RUnlock to fail")
	}

	_, err = lkClient.Unlock(context.Background(), dsync.LockArgs{})
	if err == nil {
		t.Fatal("Expected for Unlock to fail")
	}

	if err != nil {
		t.Fatal(err)
	}
	if g, w := lf, LevelWarn+3; g != w {
		t.Errorf("got %v, want %v", g, w)
	}
}

func TestLevelVarMarshalText(t *testing.T) {
	var v LevelVar
	v.Set(LevelWarn)
	data, err := v.MarshalText()
	if err != nil {
		t.Fatal(err)
	}
	var v2 LevelVar
	if err := v2.UnmarshalText(data); err != nil {
		t.Fatal(err)
	}