ronantakizawa/codereview-bench huggingface dataset:
Repository: spf13/cobra
File: cobra_test.go (Go)

Code before:

	"github.com/spf13/cobra"
)

var rootCmd = &cobra.Command{
	Version: "1.0",
	Use:     "example_program",
	Short:   "example_program - test fixture to check that deadcode elimination is allowed",
	Run: func(cmd *cobra.Command, args []string) {
		fmt.Println("hello world")
	},
	Aliases: []string{"alias1", "alias2"},
	Example: "stringer --help",
}

func main() {
	if err := rootCmd.Execute(); err != nil {
		fmt.Fprintf(os.Stderr, "Whoops. There was an error while executing your CLI '%s'", err)
		os.Exit(1)
	}
}
`), 0660)
	if err != nil {
		t.Fatalf("could not write test program: %v", err)
	}
	defer os.RemoveAll(dirname)
	buf, err := exec.Command("go", "build", filename).CombinedOutput()
	if err != nil {
		t.Fatalf("could not compile test program: %s", string(buf))
	}
	defer os.Remove(progname)
	buf, err = exec.Command("go", "tool", "nm", progname).CombinedOutput()
	if err != nil {
		t.Fatalf("could not run go tool nm: %v", err)
	}
	if strings.Contains(string(buf), "MethodByName") {
		t.Error("compiled programs contains MethodByName symbol")
	}
}


Review comment (refactor):
Can you move this defer to right after the os.Mkdir call to guarantee it gets called even if the t.Fatalf above gets triggered.

Code after:
// See also: https://github.com/spf13/cobra/pull/1956
func TestDeadcodeElimination(t *testing.T) {
	if runtime.GOOS == "windows" {
		t.Skip("go tool nm fails on windows")
	}

	// check that a simple program using cobra in its default configuration is
	// linked with deadcode elimination enabled.
	const (
		dirname  = "test_deadcode"
		progname = "test_deadcode_elimination"
	)
	_ = os.Mkdir(dirname, 0770)
	defer os.RemoveAll(dirname)
	filename := filepath.Join(dirname, progname+".go")
	err := os.WriteFile(filename, []byte(`package main

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"
)

var rootCmd = &cobra.Command{
	Version: "1.0",
	Use:     "example_program",
	Short:   "example_program - test fixture to check that deadcode elimination is allowed",
	Run: func(cmd *cobra.Command, args []string) {
		fmt.Println("hello world")
	},
	Aliases: []string{"alias1", "alias2"},
	Example: "stringer --help",
}

func main() {
	if err := rootCmd.Execute(); err != nil {
		fmt.Fprintf(os.Stderr, "Whoops. There was an error while executing your CLI '%s'", err)
		os.Exit(1)
	}
}
`), 0600)
	if err != nil {
		t.Fatalf("could not write test program: %v", err)
	}
	buf, err := exec.Command("go", "build", filename).CombinedOutput()
	if err != nil {
		t.Fatalf("could not compile test program: %s", string(buf))
	}
	defer os.Remove(progname)
	buf, err = exec.Command("go", "tool", "nm", progname).CombinedOutput()
Repository: spf13/cobra
File: command.go (Go)

Code before:

func (c *Command) getIn(def io.Reader) io.Reader {
	if c.inReader != nil {
		return c.inReader
	}
	if c.HasParent() {
		return c.parent.getIn(def)
	}
	return def
}

// UsageFunc returns either the function set by SetUsageFunc for this command
// or a parent, or it returns a default usage function.
func (c *Command) UsageFunc() (f func(*Command) error) {
	if c.usageFunc != nil {
		return c.usageFunc
	}
	if c.HasParent() {
		return c.Parent().UsageFunc()
	}
	return func(c *Command) error {
		c.mergePersistentFlags()
		fn := defaultUsageFunc
		if c.usageTemplate != nil {
			fn = c.usageTemplate.fn
		}
		err := fn(c.OutOrStderr(), c)
		if err != nil {
			c.PrintErrln(err)
		}
		return err
	}
}

// Usage puts out the usage for the command.
// Used when a user provides invalid input.
// Can be defined by user by overriding UsageFunc.
func (c *Command) Usage() error {
	return c.UsageFunc()(c)
}

// HelpFunc returns either the function set by SetHelpFunc for this command
// or a parent, or it returns a function with default help behavior.
func (c *Command) HelpFunc() func(*Command, []string) {
	if c.helpFunc != nil {
		return c.helpFunc
	}
	if c.HasParent() {
		return c.Parent().HelpFunc()
	}
	return func(c *Command, a []string) {

Review comment (suggestion):
Unlike the previous code which called `UsageTemplate()` which would return the usage template of the first parent that has one, this new code does not check for parents.

I will push a couple of new tests to check this case.
I'll also try to fix it.

Code after:

func (c *Command) getIn(def io.Reader) io.Reader {
	if c.inReader != nil {
		return c.inReader
	}
	if c.HasParent() {
		return c.parent.getIn(def)
	}
	return def
}

// UsageFunc returns either the function set by SetUsageFunc for this command
// or a parent, or it returns a default usage function.
func (c *Command) UsageFunc() (f func(*Command) error) {
	if c.usageFunc != nil {
		return c.usageFunc
	}
	if c.HasParent() {
		return c.Parent().UsageFunc()
	}
	return func(c *Command) error {
		c.mergePersistentFlags()
		fn := c.getUsageTemplateFunc()
		err := fn(c.OutOrStderr(), c)
		if err != nil {
			c.PrintErrln(err)
		}
		return err
	}
}

// getUsageTemplateFunc returns the usage template function for the command
// going up the command tree if necessary.
func (c *Command) getUsageTemplateFunc() func(w io.Writer, data interface{}) error {
	if c.usageTemplate != nil {
		return c.usageTemplate.fn
	}

	if c.HasParent() {
		return c.parent.getUsageTemplateFunc()
	}
	return defaultUsageFunc
}

// Usage puts out the usage for the command.
// Used when a user provides invalid input.
// Can be defined by user by overriding UsageFunc.
func (c *Command) Usage() error {
	return c.UsageFunc()(c)
}
Repository: spf13/cobra
File: command_test.go (Go)

Code before:
		Run:  func(_ *Command, args []string) { timesCmdArgs = args },
	}
	echoCmd.AddCommand(timesCmd)
	rootCmd.AddCommand(echoCmd)

	output, err := executeCommand(rootCmd, "sa", "times", "one", "two")
	if output != "" {
		t.Errorf("Unexpected output: %v", output)
	}
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	got := strings.Join(timesCmdArgs, " ")
	if got != onetwo {
		t.Errorf("timesCmdArgs expected: %v, got: %v", onetwo, got)
	}

	EnablePrefixMatching = defaultPrefixMatching
}

// TestPlugin checks usage as plugin for aother commmand such as kubectl.  The
// executable is `kubectl-plugin`, but we run it as `kubectl plugin`. The help
// text should reflect the way we run the commmand.
func TestPlugin(t *testing.T) {
	rootCmd := &Command{CommandName: "kubectl plugin", Args: NoArgs}
	subCmd := &Command{Use: "sub [flags]", Args: NoArgs, Run: emptyRun}
	rootCmd.AddCommand(subCmd)

	rootHelp, err := executeCommand(rootCmd, "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, rootHelp, "kubectl plugin [command]")

	childHelp, err := executeCommand(rootCmd, "sub", "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, childHelp, "kubectl plugin sub [flags]")
}

// TestChildSameName checks the correct behaviour of cobra in cases,
// when an application with name "foo" and with subcommand "foo"
// is executed with args "foo foo".
func TestChildSameName(t *testing.T) {
	var fooCmdArgs []string
	rootCmd := &Command{Use: "foo", Args: NoArgs, Run: emptyRun}
	fooCmd := &Command{

Review comment (suggestion):
Could you also set `Use` but to some other name. I think it’ll make the test more thorough. 

Code after:
		Run:  func(_ *Command, args []string) { timesCmdArgs = args },
	}
	echoCmd.AddCommand(timesCmd)
	rootCmd.AddCommand(echoCmd)

	output, err := executeCommand(rootCmd, "sa", "times", "one", "two")
	if output != "" {
		t.Errorf("Unexpected output: %v", output)
	}
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	got := strings.Join(timesCmdArgs, " ")
	if got != onetwo {
		t.Errorf("timesCmdArgs expected: %v, got: %v", onetwo, got)
	}

	EnablePrefixMatching = defaultPrefixMatching
}

// TestPlugin checks usage as plugin for another command such as kubectl.  The
// executable is `kubectl-plugin`, but we run it as `kubectl plugin`. The help
// text should reflect the way we run the command.
func TestPlugin(t *testing.T) {
	rootCmd := &Command{
		Use:  "plugin",
		Args: NoArgs,
		Annotations: map[string]string{
			CommandDisplayNameAnnotation: "kubectl plugin",
		},
	}

	subCmd := &Command{Use: "sub [flags]", Args: NoArgs, Run: emptyRun}
	rootCmd.AddCommand(subCmd)

	rootHelp, err := executeCommand(rootCmd, "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, rootHelp, "kubectl plugin [command]")

	childHelp, err := executeCommand(rootCmd, "sub", "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, childHelp, "kubectl plugin sub [flags]")
}
Repository: spf13/cobra
File: command_test.go (Go)

Code before:
	}
	timesCmd := &Command{
		Use:  "times",
		Args: ExactArgs(2),
		Run:  func(_ *Command, args []string) { timesCmdArgs = args },
	}
	echoCmd.AddCommand(timesCmd)
	rootCmd.AddCommand(echoCmd)

	output, err := executeCommand(rootCmd, "sa", "times", "one", "two")
	if output != "" {
		t.Errorf("Unexpected output: %v", output)
	}
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	got := strings.Join(timesCmdArgs, " ")
	if got != onetwo {
		t.Errorf("timesCmdArgs expected: %v, got: %v", onetwo, got)
	}

	EnablePrefixMatching = defaultPrefixMatching
}

// TestPlugin checks usage as plugin for aother commmand such as kubectl.  The
// executable is `kubectl-plugin`, but we run it as `kubectl plugin`. The help
// text should reflect the way we run the commmand.
func TestPlugin(t *testing.T) {
	rootCmd := &Command{CommandName: "kubectl plugin", Args: NoArgs}
	subCmd := &Command{Use: "sub [flags]", Args: NoArgs, Run: emptyRun}
	rootCmd.AddCommand(subCmd)

	rootHelp, err := executeCommand(rootCmd, "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, rootHelp, "kubectl plugin [command]")

	childHelp, err := executeCommand(rootCmd, "sub", "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, childHelp, "kubectl plugin sub [flags]")
}

// TestChildSameName checks the correct behaviour of cobra in cases,
// when an application with name "foo" and with subcommand "foo"
// is executed with args "foo foo".

Review comment (suggestion):
```suggestion
// TestPlugin checks usage as plugin for another command such as kubectl.  The
```

Code after:
	}
	timesCmd := &Command{
		Use:  "times",
		Args: ExactArgs(2),
		Run:  func(_ *Command, args []string) { timesCmdArgs = args },
	}
	echoCmd.AddCommand(timesCmd)
	rootCmd.AddCommand(echoCmd)

	output, err := executeCommand(rootCmd, "sa", "times", "one", "two")
	if output != "" {
		t.Errorf("Unexpected output: %v", output)
	}
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	got := strings.Join(timesCmdArgs, " ")
	if got != onetwo {
		t.Errorf("timesCmdArgs expected: %v, got: %v", onetwo, got)
	}

	EnablePrefixMatching = defaultPrefixMatching
}

// TestPlugin checks usage as plugin for another command such as kubectl.  The
// executable is `kubectl-plugin`, but we run it as `kubectl plugin`. The help
// text should reflect the way we run the command.
func TestPlugin(t *testing.T) {
	rootCmd := &Command{
		Use:  "plugin",
		Args: NoArgs,
		Annotations: map[string]string{
			CommandDisplayNameAnnotation: "kubectl plugin",
		},
	}

	subCmd := &Command{Use: "sub [flags]", Args: NoArgs, Run: emptyRun}
	rootCmd.AddCommand(subCmd)

	rootHelp, err := executeCommand(rootCmd, "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, rootHelp, "kubectl plugin [command]")

	childHelp, err := executeCommand(rootCmd, "sub", "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}
Repository: spf13/cobra
File: command_test.go (Go)

Code before:
		Use:  "times",
		Args: ExactArgs(2),
		Run:  func(_ *Command, args []string) { timesCmdArgs = args },
	}
	echoCmd.AddCommand(timesCmd)
	rootCmd.AddCommand(echoCmd)

	output, err := executeCommand(rootCmd, "sa", "times", "one", "two")
	if output != "" {
		t.Errorf("Unexpected output: %v", output)
	}
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	got := strings.Join(timesCmdArgs, " ")
	if got != onetwo {
		t.Errorf("timesCmdArgs expected: %v, got: %v", onetwo, got)
	}

	EnablePrefixMatching = defaultPrefixMatching
}

// TestPlugin checks usage as plugin for aother commmand such as kubectl.  The
// executable is `kubectl-plugin`, but we run it as `kubectl plugin`. The help
// text should reflect the way we run the commmand.
func TestPlugin(t *testing.T) {
	rootCmd := &Command{CommandName: "kubectl plugin", Args: NoArgs}
	subCmd := &Command{Use: "sub [flags]", Args: NoArgs, Run: emptyRun}
	rootCmd.AddCommand(subCmd)

	rootHelp, err := executeCommand(rootCmd, "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, rootHelp, "kubectl plugin [command]")

	childHelp, err := executeCommand(rootCmd, "sub", "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, childHelp, "kubectl plugin sub [flags]")
}

// TestChildSameName checks the correct behaviour of cobra in cases,
// when an application with name "foo" and with subcommand "foo"
// is executed with args "foo foo".
func TestChildSameName(t *testing.T) {
	var fooCmdArgs []string

Review comment (suggestion):
```suggestion
// text should reflect the way we run the command.
```

Code after:
		Use:  "times",
		Args: ExactArgs(2),
		Run:  func(_ *Command, args []string) { timesCmdArgs = args },
	}
	echoCmd.AddCommand(timesCmd)
	rootCmd.AddCommand(echoCmd)

	output, err := executeCommand(rootCmd, "sa", "times", "one", "two")
	if output != "" {
		t.Errorf("Unexpected output: %v", output)
	}
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	got := strings.Join(timesCmdArgs, " ")
	if got != onetwo {
		t.Errorf("timesCmdArgs expected: %v, got: %v", onetwo, got)
	}

	EnablePrefixMatching = defaultPrefixMatching
}

// TestPlugin checks usage as plugin for another command such as kubectl.  The
// executable is `kubectl-plugin`, but we run it as `kubectl plugin`. The help
// text should reflect the way we run the command.
func TestPlugin(t *testing.T) {
	rootCmd := &Command{
		Use:  "plugin",
		Args: NoArgs,
		Annotations: map[string]string{
			CommandDisplayNameAnnotation: "kubectl plugin",
		},
	}

	subCmd := &Command{Use: "sub [flags]", Args: NoArgs, Run: emptyRun}
	rootCmd.AddCommand(subCmd)

	rootHelp, err := executeCommand(rootCmd, "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, rootHelp, "kubectl plugin [command]")

	childHelp, err := executeCommand(rootCmd, "sub", "-h")
	if err != nil {
		t.Errorf("Unexpected error: %v", err)
	}

	checkStringContains(t, childHelp, "kubectl plugin sub [flags]")
Repository: spf13/cobra
File: command.go (Go)

Code before:
	// are properly created also
	c.checkCommandGroups()

	args := c.args

	// Workaround FAIL with "go test -v" or "cobra.test -test.v", see #155
	if c.args == nil && filepath.Base(os.Args[0]) != "cobra.test" {
		args = os.Args[1:]
	}

	// initialize the hidden command to be used for shell completion
	c.initCompleteCmd(args)

	var flags []string
	if c.TraverseChildren {
		cmd, flags, err = c.Traverse(args)
	} else {
		cmd, flags, err = c.Find(args)
	}
	if err != nil {
		// If found parse to a subcommand and then failed, talk about the subcommand
		if cmd != nil {
			c = cmd
		}
		if !c.SilenceErrors {
			c.PrintErrln(c.errPrefix, err.Error())
			c.PrintErrf("Run '%v --help' for usage.\n", c.CommandPath())
		}
		return c, err
	}

	cmd.commandCalledAs.called = true
	if cmd.commandCalledAs.name == "" {
		cmd.commandCalledAs.name = cmd.Name()
	}

	// We have to pass global context to children command
	// if context is present on the parent command.
	if cmd.ctx == nil {
		cmd.ctx = c.ctx
	}

	err = cmd.execute(flags)
	if err != nil {
		// Always show help if requested, even if SilenceErrors is in
		// effect
		if errors.Is(err, flag.ErrHelp) {
			cmd.HelpFunc()(cmd, args)
			return cmd, nil
		}


Review comment (suggestion):
Won’t the new variable be empty by default?  We probably need a getter for it and make it default to “Error:”

Code after:

	// windows hook
	if preExecHookFn != nil {
		preExecHookFn(c)
	}

	// initialize help at the last point to allow for user overriding
	c.InitDefaultHelpCmd()
	// initialize completion at the last point to allow for user overriding
	c.InitDefaultCompletionCmd()

	// Now that all commands have been created, let's make sure all groups
	// are properly created also
	c.checkCommandGroups()

	args := c.args

	// Workaround FAIL with "go test -v" or "cobra.test -test.v", see #155
	if c.args == nil && filepath.Base(os.Args[0]) != "cobra.test" {
		args = os.Args[1:]
	}

	// initialize the hidden command to be used for shell completion
	c.initCompleteCmd(args)

	var flags []string
	if c.TraverseChildren {
		cmd, flags, err = c.Traverse(args)
	} else {
		cmd, flags, err = c.Find(args)
	}
	if err != nil {
		// If found parse to a subcommand and then failed, talk about the subcommand
		if cmd != nil {
			c = cmd
		}
		if !c.SilenceErrors {
			c.PrintErrln(c.ErrPrefix(), err.Error())
			c.PrintErrf("Run '%v --help' for usage.\n", c.CommandPath())
		}
		return c, err
	}

	cmd.commandCalledAs.called = true
	if cmd.commandCalledAs.name == "" {
		cmd.commandCalledAs.name = cmd.Name()
	}

	// We have to pass global context to children command
	// if context is present on the parent command.
	if cmd.ctx == nil {
Repository: spf13/cobra
File: command.go (Go)

Code before:
	}

	cmd.commandCalledAs.called = true
	if cmd.commandCalledAs.name == "" {
		cmd.commandCalledAs.name = cmd.Name()
	}

	// We have to pass global context to children command
	// if context is present on the parent command.
	if cmd.ctx == nil {
		cmd.ctx = c.ctx
	}

	err = cmd.execute(flags)
	if err != nil {
		// Always show help if requested, even if SilenceErrors is in
		// effect
		if errors.Is(err, flag.ErrHelp) {
			cmd.HelpFunc()(cmd, args)
			return cmd, nil
		}

		// If root command has SilenceErrors flagged,
		// all subcommands should respect it
		if !cmd.SilenceErrors && !c.SilenceErrors {
			c.PrintErrln(c.ErrPrefix(), err.Error())
		}

		// If root command has SilenceUsage flagged,
		// all subcommands should respect it
		if !cmd.SilenceUsage && !c.SilenceUsage {
			c.Println(cmd.UsageString())
		}
	}
	return cmd, err
}

func (c *Command) ValidateArgs(args []string) error {
	if c.Args == nil {
		return ArbitraryArgs(c, args)
	}
	return c.Args(c, args)
}

// ValidateRequiredFlags validates all required flags are present and returns an error otherwise
func (c *Command) ValidateRequiredFlags() error {
	if c.DisableFlagParsing {
		return nil
	}

	flags := c.Flags()

Review comment (suggestion):
I believe this should be `cmd.ErrPrefix()` instead.  The `c` command is always the root command here, so if we want to support setting a different prefix for different command, it is `cmd` that should be used here.

Code after:
	}

	cmd.commandCalledAs.called = true
	if cmd.commandCalledAs.name == "" {
		cmd.commandCalledAs.name = cmd.Name()
	}

	// We have to pass global context to children command
	// if context is present on the parent command.
	if cmd.ctx == nil {
		cmd.ctx = c.ctx
	}

	err = cmd.execute(flags)
	if err != nil {
		// Always show help if requested, even if SilenceErrors is in
		// effect
		if errors.Is(err, flag.ErrHelp) {
			cmd.HelpFunc()(cmd, args)
			return cmd, nil
		}

		// If root command has SilenceErrors flagged,
		// all subcommands should respect it
		if !cmd.SilenceErrors && !c.SilenceErrors {
			c.PrintErrln(cmd.ErrPrefix(), err.Error())
		}

		// If root command has SilenceUsage flagged,
		// all subcommands should respect it
		if !cmd.SilenceUsage && !c.SilenceUsage {
			c.Println(cmd.UsageString())
		}
	}
	return cmd, err
}

func (c *Command) ValidateArgs(args []string) error {
	if c.Args == nil {
		return ArbitraryArgs(c, args)
	}
	return c.Args(c, args)
}

// ValidateRequiredFlags validates all required flags are present and returns an error otherwise
func (c *Command) ValidateRequiredFlags() error {
	if c.DisableFlagParsing {
		return nil
	}

	flags := c.Flags()
Repository: spf13/cobra
File: command.go (Go)

Code before:
	// are properly created also
	c.checkCommandGroups()

	args := c.args

	// Workaround FAIL with "go test -v" or "cobra.test -test.v", see #155
	if c.args == nil && filepath.Base(os.Args[0]) != "cobra.test" {
		args = os.Args[1:]
	}

	// initialize the hidden command to be used for shell completion
	c.initCompleteCmd(args)

	var flags []string
	if c.TraverseChildren {
		cmd, flags, err = c.Traverse(args)
	} else {
		cmd, flags, err = c.Find(args)
	}
	if err != nil {
		// If found parse to a subcommand and then failed, talk about the subcommand
		if cmd != nil {
			c = cmd
		}
		if !c.SilenceErrors {
			c.PrintErrln(cmd.ErrPrefix(), err.Error())
			c.PrintErrf("Run '%v --help' for usage.\n", c.CommandPath())
		}
		return c, err
	}

	cmd.commandCalledAs.called = true
	if cmd.commandCalledAs.name == "" {
		cmd.commandCalledAs.name = cmd.Name()
	}

	// We have to pass global context to children command
	// if context is present on the parent command.
	if cmd.ctx == nil {
		cmd.ctx = c.ctx
	}

	err = cmd.execute(flags)
	if err != nil {
		// Always show help if requested, even if SilenceErrors is in
		// effect
		if errors.Is(err, flag.ErrHelp) {
			cmd.HelpFunc()(cmd, args)
			return cmd, nil
		}


Review comment (suggestion):
This line should have stayed with `c.ErrPrefix()`.  Notice that right above, `c = cmd` as long as `cmd != nil`.  So, in case `cmd == nil` we should use `c` here.

Code after:
	// are properly created also
	c.checkCommandGroups()

	args := c.args

	// Workaround FAIL with "go test -v" or "cobra.test -test.v", see #155
	if c.args == nil && filepath.Base(os.Args[0]) != "cobra.test" {
		args = os.Args[1:]
	}

	// initialize the hidden command to be used for shell completion
	c.initCompleteCmd(args)

	var flags []string
	if c.TraverseChildren {
		cmd, flags, err = c.Traverse(args)
	} else {
		cmd, flags, err = c.Find(args)
	}
	if err != nil {
		// If found parse to a subcommand and then failed, talk about the subcommand
		if cmd != nil {
			c = cmd
		}
		if !c.SilenceErrors {
			c.PrintErrln(c.ErrPrefix(), err.Error())
			c.PrintErrf("Run '%v --help' for usage.\n", c.CommandPath())
		}
		return c, err
	}

	cmd.commandCalledAs.called = true
	if cmd.commandCalledAs.name == "" {
		cmd.commandCalledAs.name = cmd.Name()
	}

	// We have to pass global context to children command
	// if context is present on the parent command.
	if cmd.ctx == nil {
		cmd.ctx = c.ctx
	}

	err = cmd.execute(flags)
	if err != nil {
		// Always show help if requested, even if SilenceErrors is in
		// effect
		if errors.Is(err, flag.ErrHelp) {
			cmd.HelpFunc()(cmd, args)
			return cmd, nil
		}