return os.Lstat(name)
}
func (handler *osIOHandler) EvalSymlinks(path string) (string, error) {
	return filepath.EvalSymlinks(path)
}
func (handler *osIOHandler) WriteFile(filename string, data []byte, perm os.FileMode) error {
	return ioutil.WriteFile(filename, data, perm)
}

// given a wwn and lun, find the device and associated devicemapper parent

		fmt.Fprintf(&w, "\t\"%d\",\n", i)
	}
	fmt.Fprintf(&w, issue41621epilog)
	err = os.WriteFile(tmpdir+"/large.go", w.Bytes(), 0666)
	if err != nil {
		t.Fatalf("can't write output: %v\n", err)
	}

	// Emit go.mod
	w.Reset()
	fmt.Fprintf(&w, "module issue41621\n\ngo 1.12\n")
	err = os.WriteFile(tmpdir+"/go.mod", w.Bytes(), 0666)
	if err != nil {
		t.Fatalf("can't write output: %v\n", err)
	}

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

	dir, remove := mustTempDir(t)
	defer remove()
	path := filepath.Join(dir, "existing.txt")

	if err := os.WriteFile(path, []byte("ok"), 0777); err != nil {
		t.Fatalf("os.WriteFile: %v", err)
	}

	f, err := lockedfile.Edit(path)
	if err != nil {
		t.Fatalf("first Edit: %v", err)
	}

	wait := mustBlock(t, "Edit", func() {

				err := os.Mkdir(kubeletConfDir, 0755)
				require.NoError(t, err, "Failed to create kubelet.conf.d directory")

				err = os.WriteFile(filepath.Join(kubeletConfDir, "10-kubelet.conf"), []byte(test.dropin1), 0644)
				require.NoError(t, err, "failed to create config from a yaml file")

				err = os.WriteFile(filepath.Join(kubeletConfDir, "20-kubelet.conf"), []byte(test.dropin2), 0644)

            const newOperationId = operationId.substring(toRemove.length)
            operation.operationId = newOperationId
          }
        }
      }
    }

    await fs.promises.writeFile(
      filePath,
      JSON.stringify(openapiContent, null, 2),
    )
    console.log('File successfully modified')
  } catch (err) {
    console.error('Error:', err)
  }
}

		return string(out)
	}

	gopath := strings.TrimSpace(run("go", "env", "GOPATH"))
	if gopath == "" {
		fatalf("cannot find GOPATH")
	}

	exitCode := 0
	for _, arg := range flag.Args() {
		if err := os.WriteFile(filepath.Join(tmpdir, "go.mod"), []byte("module m\n"), 0666); err != nil {
			fatalf("%v", err)
		}
		run(goCmd, "get", "-d", arg)
		path := arg
		if i := strings.Index(path, "@"); i >= 0 {
			path = path[:i]
		}

		port     = uint(0)
	)

	// cert
	if err := os.WriteFile(certFile, testcerts.ServerCert, 0o644); err != nil { // nolint: vetshadow
		t.Fatalf("WriteFile(%v) failed: %v", certFile, err)
	}
	// key
	if err := os.WriteFile(keyFile, testcerts.ServerKey, 0o644); err != nil { // nolint: vetshadow
		t.Fatalf("WriteFile(%v) failed: %v", keyFile, err)
	}

	options := Options{
		Port:         port,

# This is needed by analyzers that access source files through 'go list'.
# Verifies golang.org/issue/31971.
# TODO(jayconrod): This test is brittle. We should write _testmain.go as
# a build action instead of with an ad-hoc WriteFile call
# in internal/test/test.go. Then we could just grep 'go get -n'.
go test x_test.go

-- x_test.go --
package x

import (
	"os"
	"path/filepath"
	"regexp"
	"testing"
)

			if in != out {
				if err := os.WriteFile(out, got, 0666); err != nil {
					t.Error(err)
				}
				return
			}
			// in == out: don't accidentally destroy input
			t.Errorf("WARNING: -update did not rewrite input file %s", in)
		}

		t.Errorf("(gofmt %s) != %s (see %s.gofmt)\n%s", in, out, in,
			diff.Diff("expected", expected, "got", got))
		if err := os.WriteFile(in+".gofmt", got, 0666); err != nil {

		dir, err := os.MkdirTemp("", "")
		if err != nil {
			return false, ""
		}
		defer func() {
			_ = os.RemoveAll(dir)
		}()
		fpath := filepath.Join(dir, "testfile.txt")
		if err := os.WriteFile(fpath, nil, 0644); err != nil {
			return false, ""
		}
		if err := os.Symlink(fpath, filepath.Join(dir, "testlink")); err != nil {
			if SyscallIsNotSupported(err) {