// File operations.
	ListDir(ctx context.Context, origvolume, volume, dirPath string, count int) ([]string, error)
	ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (n int64, err error)
	AppendFile(ctx context.Context, volume string, path string, buf []byte) (err error)

	respBody, err := client.callGet(ctx, storageRESTMethodReadFileStream, values, nil, -1)
	if err != nil {
		return nil, toStorageErr(err)
	}
	return respBody, nil
}

// ReadFile - reads section of a file.
func (client *storageRESTClient) ReadFile(ctx context.Context, volume string, path string, offset int64, buf []byte, verifier *BitrotVerifier) (int64, error) {
	values := make(url.Values)
	values.Set(storageRESTVolume, volume)

		t.Fatal(err)
	}
	name2 := f.Name()
	defer os.Remove(name2)
	f.WriteString("bbbbbbbbbb")
	f.Close()

	if err = AppendFile(name1, name2, false); err != nil {
		t.Error(err)
	}

	b, err := os.ReadFile(name1)
	if err != nil {
		t.Error(err)
	}

	expected := "aaaaaaaaaabbbbbbbbbb"
	if string(b) != expected {
		t.Errorf("AppendFile() failed, expected: %s, got %s", expected, string(b))
	}
}

	ctxt.ConsoleAddr = ctx.GlobalString("console-address")
	if ctxt.ConsoleAddr == "" {
		ctxt.ConsoleAddr = ctx.String("console-address")
	}

	if cxml := ctx.String("crossdomain-xml"); cxml != "" {
		buf, err := os.ReadFile(cxml)
		if err != nil {
			return err
		}
		ctxt.CrossDomainXML = string(buf)
	}

	// Check "no-compat" flag from command line argument.

			f, err := os.Create(goldenFile)
			if err != nil {
				t.Fatal(err)
			}
			for _, feat := range w.Features() {
				fmt.Fprintf(f, "%s\n", feat)
			}
			f.Close()
		}

		bs, err := os.ReadFile(goldenFile)
		if err != nil {
			t.Fatalf("opening golden.txt for package %q: %v", fi.Name(), err)
		}
		wanted := strings.Split(string(bs), "\n")
		sort.Strings(wanted)
		for _, feature := range wanted {

			return nil, err
		}
		prof.stopFn = func() ([]byte, error) {
			pprof.StopCPUProfile()
			err := f.Close()
			if err != nil {
				return nil, err
			}
			defer RemoveAll(dirPath)
			return ioutilx.ReadFile(fn)
		}
	case madmin.ProfilerCPUIO:
		// at 10k or more goroutines fgprof is likely to become
		// unable to maintain its sampling rate and to significantly
		// degrade the performance of your application

pkg crypto/tls, type Config struct, PreferServerCipherSuites //deprecated
pkg crypto/x509, method (*CertPool) Subjects //deprecated
pkg debug/buildinfo, func Read(io.ReaderAt) (*debug.BuildInfo, error)
pkg debug/buildinfo, func ReadFile(string) (*debug.BuildInfo, error)
pkg debug/buildinfo, type BuildInfo = debug.BuildInfo
pkg debug/dwarf, type BasicType struct, DataBitOffset int64
pkg debug/dwarf, type StructField struct, DataBitOffset int64

		"testdata/check-inject/rev-16-injector.yaml",
		"testdata/check-inject/never-match-injector.yaml",
	}
	var whs []admitv1.MutatingWebhookConfiguration
	for _, whName := range whFiles {
		file, err := os.ReadFile(whName)
		if err != nil {
			t.Fatal(err)
		}
		var wh *admitv1.MutatingWebhookConfiguration
		if err := yaml.Unmarshal(file, &wh); err != nil {
			t.Fatal(err)
		}
		whs = append(whs, *wh)
	}

	debug, err := extractZtunnelConfigDump(kubeClient, podName, podNamespace)
	if err != nil {
		return nil, err
	}
	return setupConfigdumpZtunnelConfigWriter(debug, out)
}

func readFile(filename string) ([]byte, error) {
	file := os.Stdin
	if filename != "-" {
		var err error
		file, err = os.Open(filename)
		if err != nil {
			return nil, err
		}
	}
	defer func() {

					}
				default:
					t.Fatalf("test %d, unknown test operation: %T", i, tf)
				}
			}

			if v.file != "" {
				want, err := os.ReadFile(v.file)
				if err != nil {
					t.Fatalf("ReadFile() = %v, want nil", err)
				}
				got := buf.Bytes()
				if !bytes.Equal(want, got) {
					t.Fatalf("incorrect result: (-got +want)\n%v", bytediff(got, want))
				}
			}
		})