return []byte{}, nil, nil
			})
		}
	}
	fcmd = fakeexec.FakeCmd{
		CombinedOutputScript: fakeOutputs,
	}

	// Construct fake exec outputs from fcmd
	var fakeAction []fakeexec.FakeCommandAction
	for i := 0; i < len(expecteds); i++ {
		fakeAction = append(fakeAction, func(cmd string, args ...string) exec.Cmd {
			return fakeexec.InitFakeCmd(&fcmd, cmd, args...)
		})

	}
	fake := &fakeexec.FakeExec{

// not other callers.
func runEnv(dir string, mode int, env []string, cmd ...string) string {
	if vflag > 1 {
		errprintf("run: %s\n", strings.Join(cmd, " "))
	}

	xcmd := exec.Command(cmd[0], cmd[1:]...)
	if env != nil {
		xcmd.Env = append(os.Environ(), env...)
	}
	setDir(xcmd, dir)
	var data []byte
	var err error

	// If we want to show command output and this is not

	cmd := exec.Command(exe)
	if cmd.Path != exe {
		t.Errorf("exec.Command(%#q) set Path=%#q", exe, cmd.Path)
	}
	err := cmd.Run()
	if err != nil {
		t.Errorf("using exec.Command(%#q): %v", exe, err)
	}

	cmd = &exec.Cmd{Path: exe}
	err = cmd.Run()
	if err != nil {
		t.Errorf("using exec.Cmd{Path: %#q}: %v", cmd.Path, err)
	}

		}
	})

	cmd := testenv.Command(t, testenv.GoToolPath(t), "test", "-c", "-o", x, "syscall")
	cmd.Env = append(cmd.Environ(), "CGO_ENABLED=0")
	if o, err := cmd.CombinedOutput(); err != nil {
		t.Fatalf("%v: %v\n%s", cmd, err, o)
	}

	cmd = testenv.Command(t, "/syscall.test", "-test.run=^TestUnshareMountNameSpaceChroot$", "/")
	cmd.Env = append(cmd.Environ(), "GO_WANT_HELPER_PROCESS=1")

	cmd := testenv.Command(t, testenv.GoToolPath(t), "test", toolexecArg, "-cover", "-covermode", "count", "-coverprofile", lineDupProfile)
	cmd.Env = append(cmd.Environ(), "CMDCOVER_TOOLEXEC=true")
	cmd.Dir = lineDupDir
	run(cmd, t)

	// testcover -func=TMPDIR/linedup.out
	cmd = testenv.Command(t, testcover(t), "-func", lineDupProfile)
	cmd.Dir = lineDupDir
	run(cmd, t)
}

		t.Run(tc.kubeletVersion, func(t *testing.T) {
			fcmd := fakeexec.FakeCmd{
				OutputScript: []fakeexec.FakeAction{
					func() ([]byte, []byte, error) { return []byte("Kubernetes " + tc.kubeletVersion), nil, nil },
				},
			}
			fexec := &fakeexec.FakeExec{
				CommandScript: []fakeexec.FakeCommandAction{
					func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
				},
			}

)

var textfmtoutflag *string
var liveflag *bool

func makeDumpOp(cmd string) covOperation {
	if cmd == textfmtMode || cmd == percentMode {
		textfmtoutflag = flag.String("o", "", "Output text format to file")
	}
	if cmd == debugDumpMode {
		liveflag = flag.Bool("live", false, "Select only live (executed) functions for dump output.")
	}
	d := &dstate{
		cmd: cmd,
		cm:  &cmerge.Merger{},
	}

// replaceEnv sets the key environment variable to value in cmd.
func replaceEnv(cmd *exec.Cmd, key, value string) {
	if cmd.Env == nil {
		cmd.Env = cmd.Environ()
	}
	cmd.Env = append(cmd.Env, key+"="+value)
}

// appendExperimentEnv appends comma-separated experiments to GOEXPERIMENT.
func appendExperimentEnv(cmd *exec.Cmd, experiments []string) {
	if cmd.Env == nil {
		cmd.Env = cmd.Environ()
	}

	"cmd/go/internal/generate"
	"cmd/go/internal/help"
	"cmd/go/internal/list"
	"cmd/go/internal/modcmd"
	"cmd/go/internal/modfetch"
	"cmd/go/internal/modget"
	"cmd/go/internal/modload"
	"cmd/go/internal/run"
	"cmd/go/internal/telemetrycmd"
	"cmd/go/internal/telemetrystats"
	"cmd/go/internal/test"
	"cmd/go/internal/tool"
	"cmd/go/internal/toolchain"
	"cmd/go/internal/trace"
	"cmd/go/internal/version"

	}

	cmd := testenv.CommandContext(t, ctx, os.Args[0], cmdArgs...)
	cmd.Env = append(os.Environ(), "GO_TEST_TERMINAL_SIGNALS=2")
	cmd.Stdin = os.Stdin
	cmd.Stdout = os.Stdout
	cmd.Stderr = os.Stderr
	cmd.ExtraFiles = []*os.File{pty}
	cmd.SysProcAttr = &syscall.SysProcAttr{
		Foreground: true,
		Ctty:       ptyFD,
	}
	if err := cmd.Start(); err != nil {