V2 enable ps tests

* Combine cobra.Command helper functions into validate package
  from registry and common packages
* Introduce ChoiceValue for flags

Signed-off-by: Jhon Honce <jhonce@redhat.com>

cmd/podman/common/specgen.go

@@ -528,7 +528,7 @@ func FillOutSpecGen(s *specgen.SpecGenerator, c *ContainerCLIOpts, args []string
 
 	// Only add read-only tmpfs mounts in case that we are read-only and the
 	// read-only tmpfs flag has been set.
-	mounts, volumes, err := parseVolumes(c.Volume, c.Mount, c.TmpFS, (c.ReadOnlyTmpFS && c.ReadOnly))
+	mounts, volumes, err := parseVolumes(c.Volume, c.Mount, c.TmpFS, c.ReadOnlyTmpFS && c.ReadOnly)
 	if err != nil {
 		return err
 	}

cmd/podman/common/util.go

@@ -1,11 +1,8 @@
 package common
 
 import (
-	"fmt"
 	"strconv"
 
-	"github.com/spf13/cobra"
-
 	"github.com/cri-o/ocicni/pkg/ocicni"
 	"github.com/docker/go-connections/nat"
 	"github.com/pkg/errors"
@@ -44,11 +41,3 @@ func createPortBindings(ports []string) ([]ocicni.PortMapping, error) {
 	}
 	return portBindings, nil
 }
-
-// NoArgs returns an error if any args are included.
-func NoArgs(cmd *cobra.Command, args []string) error {
-	if len(args) > 0 {
-		return fmt.Errorf("`%s` takes no arguments", cmd.CommandPath())
-	}
-	return nil
-}

cmd/podman/containers/container.go

@@ -2,6 +2,7 @@ package containers
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/containers/libpod/pkg/util"
 	"github.com/spf13/cobra"
@@ -17,7 +18,7 @@ var (
 		Short:            "Manage containers",
 		Long:             "Manage containers",
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 	}
 
 	containerConfig = util.DefaultContainerConfig()

cmd/podman/containers/diff.go

@@ -3,6 +3,7 @@ package containers
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
 	"github.com/containers/libpod/cmd/podman/report"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -12,7 +13,7 @@ var (
 	// podman container _diff_
 	diffCmd = &cobra.Command{
 		Use:   "diff [flags] CONTAINER",
-		Args:  registry.IdOrLatestArgs,
+		Args:  validate.IdOrLatestArgs,
 		Short: "Inspect changes on container's file systems",
 		Long:  `Displays changes on a container filesystem.  The container will be compared to its parent layer.`,
 		RunE:  diff,

cmd/podman/containers/list.go

@@ -1,8 +1,8 @@
 package containers
 
 import (
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
 )
@@ -12,7 +12,7 @@ var (
 	listCmd = &cobra.Command{
 		Use:     "list",
 		Aliases: []string{"ls"},
-		Args:    common.NoArgs,
+		Args:    validate.NoArgs,
 		Short:   "List containers",
 		Long:    "Prints out information about the containers",
 		RunE:    ps,

cmd/podman/containers/ps.go

@@ -12,8 +12,8 @@ import (
 
 	tm "github.com/buger/goterm"
 	"github.com/containers/buildah/pkg/formats"
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/cri-o/ocicni/pkg/ocicni"
 	"github.com/docker/go-units"
@@ -26,7 +26,7 @@ var (
 	psDescription = "Prints out information about the containers"
 	psCommand     = &cobra.Command{
 		Use:   "ps",
-		Args:  common.NoArgs,
+		Args:  validate.NoArgs,
 		Short: "List containers",
 		Long:  psDescription,
 		RunE:  ps,
@@ -41,7 +41,7 @@ var (
 	}
 	filters        []string
 	noTrunc        bool
-	defaultHeaders string = "CONTAINER ID\tIMAGE\tCOMMAND\tCREATED\tSTATUS\tPORTS\tNAMES"
+	defaultHeaders = "CONTAINER ID\tIMAGE\tCOMMAND\tCREATED\tSTATUS\tPORTS\tNAMES"
 )
 
 func init() {
@@ -64,9 +64,12 @@ func listFlagSet(flags *pflag.FlagSet) {
 	flags.BoolVarP(&listOpts.Pod, "pod", "p", false, "Print the ID and name of the pod the containers are associated with")
 	flags.BoolVarP(&listOpts.Quiet, "quiet", "q", false, "Print the numeric IDs of the containers only")
 	flags.BoolVarP(&listOpts.Size, "size", "s", false, "Display the total file sizes")
-	flags.StringVar(&listOpts.Sort, "sort", "created", "Sort output by command, created, id, image, names, runningfor, size, or status")
 	flags.BoolVar(&listOpts.Sync, "sync", false, "Sync container state with OCI runtime")
 	flags.UintVarP(&listOpts.Watch, "watch", "w", 0, "Watch the ps output on an interval in seconds")
+
+	created := validate.ChoiceValue(&listOpts.Sort, "command", "created", "id", "image", "names", "runningfor", "size", "status")
+	flags.Var(created, "sort", "Sort output by: "+created.Choices())
+
 	if registry.IsRemote() {
 		_ = flags.MarkHidden("latest")
 	}
@@ -175,7 +178,7 @@ func ps(cmd *cobra.Command, args []string) error {
 
 	headers, format := createPsOut()
 	if cmd.Flag("format").Changed {
-		format = listOpts.Format
+		format = strings.TrimPrefix(listOpts.Format, "table ")
 		if !strings.HasPrefix(format, "\n") {
 			format += "\n"
 		}

cmd/podman/containers/wait.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/containers/libpod/cmd/podman/registry"
 	"github.com/containers/libpod/cmd/podman/utils"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/libpod/define"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
@@ -22,7 +23,7 @@ var (
 		Short: "Block on one or more containers",
 		Long:  waitDescription,
 		RunE:  wait,
-		Args:  registry.IdOrLatestArgs,
+		Args:  validate.IdOrLatestArgs,
 		Example: `podman wait --latest
   podman wait --interval 5000 ctrID
   podman wait ctrID1 ctrID2`,

cmd/podman/diff.go

@@ -6,6 +6,7 @@ import (
 	"github.com/containers/libpod/cmd/podman/containers"
 	"github.com/containers/libpod/cmd/podman/images"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
 )
@@ -17,7 +18,7 @@ var (
 	diffDescription = `Displays changes on a container or image's filesystem.  The container or image will be compared to its parent layer.`
 	diffCmd         = &cobra.Command{
 		Use:              "diff [flags] {CONTAINER_ID | IMAGE_ID}",
-		Args:             registry.IdOrLatestArgs,
+		Args:             validate.IdOrLatestArgs,
 		Short:            "Display the changes of object's file system",
 		Long:             diffDescription,
 		TraverseChildren: true,

cmd/podman/generate/generate.go

@@ -2,6 +2,7 @@ package pods
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/containers/libpod/pkg/util"
 	"github.com/spf13/cobra"
@@ -14,7 +15,7 @@ var (
 		Short:            "Generate structured data based on containers and pods.",
 		Long:             "Generate structured data (e.g., Kubernetes yaml or systemd units) based on containers and pods.",
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 	}
 	containerConfig = util.DefaultContainerConfig()
 )

cmd/podman/healthcheck/healthcheck.go

@@ -2,6 +2,7 @@ package healthcheck
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
 )
@@ -13,7 +14,7 @@ var (
 		Short:            "Manage Healthcheck",
 		Long:             "Manage Healthcheck",
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 	}
 )
 

cmd/podman/images/image.go

@@ -2,6 +2,7 @@ package images
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
 )
@@ -16,7 +17,7 @@ var (
 		Short:            "Manage images",
 		Long:             "Manage images",
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 	}
 )
 

cmd/podman/images/prune.go

@@ -6,8 +6,8 @@ import (
 	"os"
 	"strings"
 
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -19,7 +19,7 @@ var (
   If an image is not being used by a container, it will be removed from the system.`
 	pruneCmd = &cobra.Command{
 		Use:     "prune",
-		Args:    common.NoArgs,
+		Args:    validate.NoArgs,
 		Short:   "Remove unused images",
 		Long:    pruneDescription,
 		RunE:    prune,

cmd/podman/manifest/manifest.go

@@ -2,6 +2,7 @@ package manifest
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
 )
@@ -13,7 +14,7 @@ var (
 		Short:            "Manipulate manifest lists and image indexes",
 		Long:             manifestDescription,
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 		Example: `podman manifest create localhost/list
   podman manifest inspect localhost/list`,
 	}

cmd/podman/networks/network.go

@@ -2,6 +2,7 @@ package images
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
 )
@@ -13,7 +14,7 @@ var (
 		Short:            "Manage networks",
 		Long:             "Manage networks",
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 	}
 )
 

cmd/podman/pods/create.go

@@ -9,6 +9,7 @@ import (
 	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/parse"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/containers/libpod/pkg/errorhandling"
 	"github.com/containers/libpod/pkg/specgen"
@@ -24,7 +25,7 @@ var (
 
 	createCommand = &cobra.Command{
 		Use:   "create",
-		Args:  common.NoArgs,
+		Args:  validate.NoArgs,
 		Short: "Create a new empty pod",
 		Long:  podCreateDescription,
 		RunE:  create,

cmd/podman/pods/pod.go

@@ -2,6 +2,7 @@ package pods
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/containers/libpod/pkg/util"
 	"github.com/spf13/cobra"
@@ -17,7 +18,7 @@ var (
 		Short:            "Manage pods",
 		Long:             "Manage pods",
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 	}
 	containerConfig = util.DefaultContainerConfig()
 )

cmd/podman/pods/ps.go

@@ -11,8 +11,8 @@ import (
 	"text/template"
 	"time"
 
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/docker/go-units"
 	"github.com/pkg/errors"
@@ -29,12 +29,12 @@ var (
 		Short:   "list pods",
 		Long:    psDescription,
 		RunE:    pods,
-		Args:    common.NoArgs,
+		Args:    validate.NoArgs,
 	}
 )
 
 var (
-	defaultHeaders string = "POD ID\tNAME\tSTATUS\tCREATED"
+	defaultHeaders = "POD ID\tNAME\tSTATUS\tCREATED"
 	inputFilters   []string
 	noTrunc        bool
 	psInput        entities.PodPSOptions

cmd/podman/registry/registry.go

@@ -2,11 +2,9 @@ package registry
 
 import (
 	"context"
-	"fmt"
 
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/containers/libpod/pkg/domain/infra"
-	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
 )
 
@@ -77,21 +75,6 @@ func NewContainerEngine(cmd *cobra.Command, args []string) (entities.ContainerEn
 	return containerEngine, nil
 }
 
-func SubCommandExists(cmd *cobra.Command, args []string) error {
-	if len(args) > 0 {
-		return errors.Errorf("unrecognized command `%[1]s %[2]s`\nTry '%[1]s --help' for more information.", cmd.CommandPath(), args[0])
-	}
-	return errors.Errorf("missing command '%[1]s COMMAND'\nTry '%[1]s --help' for more information.", cmd.CommandPath())
-}
-
-// IdOrLatestArgs used to validate a nameOrId was provided or the "--latest" flag
-func IdOrLatestArgs(cmd *cobra.Command, args []string) error {
-	if len(args) > 1 || (len(args) == 0 && !cmd.Flag("latest").Changed) {
-		return fmt.Errorf("%s requires a name, id or the '--latest' flag", cmd.Name())
-	}
-	return nil
-}
-
 type PodmanOptionsKey struct{}
 
 func Context() context.Context {

cmd/podman/root.go

@@ -9,6 +9,7 @@ import (
 	"strings"
 
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/containers/libpod/pkg/rootless"
 	"github.com/containers/libpod/pkg/tracing"
@@ -60,7 +61,7 @@ var (
 		SilenceErrors:      true,
 		TraverseChildren:   true,
 		PersistentPreRunE:  persistentPreRunE,
-		RunE:               registry.SubCommandExists,
+		RunE:               validate.SubCommandExists,
 		PersistentPostRunE: persistentPostRunE,
 		Version:            version.Version,
 	}

cmd/podman/system/events.go

@@ -7,8 +7,8 @@ import (
 	"os"
 
 	"github.com/containers/buildah/pkg/formats"
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/libpod/events"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
@@ -19,7 +19,7 @@ var (
 	eventsDescription = "Monitor podman events"
 	eventsCommand     = &cobra.Command{
 		Use:   "events",
-		Args:  common.NoArgs,
+		Args:  validate.NoArgs,
 		Short: "Show podman events",
 		Long:  eventsDescription,
 		RunE:  eventsCmd,

cmd/podman/system/info.go

@@ -5,8 +5,8 @@ import (
 	"os"
 	"text/template"
 
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/ghodss/yaml"
 	"github.com/spf13/cobra"
@@ -19,7 +19,7 @@ var (
 `
 	infoCommand = &cobra.Command{
 		Use:     "info",
-		Args:    common.NoArgs,
+		Args:    validate.NoArgs,
 		Long:    infoDescription,
 		Short:   "Display podman system information",
 		RunE:    info,

cmd/podman/system/system.go

@@ -2,6 +2,7 @@ package system
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
 )
@@ -16,7 +17,7 @@ var (
 		Short:            "Manage podman",
 		Long:             "Manage podman",
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 	}
 )
 

cmd/podman/system/version.go

@@ -9,8 +9,8 @@ import (
 	"time"
 
 	"github.com/containers/buildah/pkg/formats"
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/libpod/define"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
@@ -20,7 +20,7 @@ import (
 var (
 	versionCommand = &cobra.Command{
 		Use:   "version",
-		Args:  common.NoArgs,
+		Args:  validate.NoArgs,
 		Short: "Display the Podman Version Information",
 		RunE:  version,
 		Annotations: map[string]string{

cmd/podman/utils/alias.go

@@ -2,7 +2,7 @@ package utils
 
 import "github.com/spf13/pflag"
 
-// AliasFlags is a function to handle backwards compatability with old flags
+// AliasFlags is a function to handle backwards compatibility with old flags
 func AliasFlags(f *pflag.FlagSet, name string) pflag.NormalizedName {
 	switch name {
 	case "healthcheck-command":

cmd/podman/validate/args.go

@@ -0,0 +1,32 @@
+package validate
+
+import (
+	"fmt"
+
+	"github.com/pkg/errors"
+	"github.com/spf13/cobra"
+)
+
+// NoArgs returns an error if any args are included.
+func NoArgs(cmd *cobra.Command, args []string) error {
+	if len(args) > 0 {
+		return fmt.Errorf("`%s` takes no arguments", cmd.CommandPath())
+	}
+	return nil
+}
+
+// SubCommandExists returns an error if no sub command is provided
+func SubCommandExists(cmd *cobra.Command, args []string) error {
+	if len(args) > 0 {
+		return errors.Errorf("unrecognized command `%[1]s %[2]s`\nTry '%[1]s --help' for more information.", cmd.CommandPath(), args[0])
+	}
+	return errors.Errorf("missing command '%[1]s COMMAND'\nTry '%[1]s --help' for more information.", cmd.CommandPath())
+}
+
+// IdOrLatestArgs used to validate a nameOrId was provided or the "--latest" flag
+func IdOrLatestArgs(cmd *cobra.Command, args []string) error {
+	if len(args) > 1 || (len(args) == 0 && !cmd.Flag("latest").Changed) {
+		return fmt.Errorf("`%s` requires a name, id  or the \"--latest\" flag", cmd.CommandPath())
+	}
+	return nil
+}

cmd/podman/validate/choice.go

@@ -0,0 +1,46 @@
+package validate
+
+import (
+	"fmt"
+	"strings"
+)
+
+// Honors cobra.Value interface
+type choiceValue struct {
+	value   *string
+	choices []string
+}
+
+// ChoiceValue may be used in cobra FlagSet methods Var/VarP/VarPF() to select from a set of values
+//
+// Example:
+// 	created := validate.ChoiceValue(&opts.Sort, "command", "created", "id", "image", "names", "runningfor", "size", "status")
+//	flags.Var(created, "sort", "Sort output by: "+created.Choices())
+func ChoiceValue(p *string, choices ...string) *choiceValue {
+	return &choiceValue{
+		value:   p,
+		choices: choices,
+	}
+}
+
+func (c *choiceValue) String() string {
+	return *c.value
+}
+
+func (c *choiceValue) Set(value string) error {
+	for _, v := range c.choices {
+		if v == value {
+			*c.value = value
+			return nil
+		}
+	}
+	return fmt.Errorf("%q is not a valid value.  Choose from: %q", value, c.Choices())
+}
+
+func (c *choiceValue) Choices() string {
+	return strings.Join(c.choices, ", ")
+}
+
+func (c *choiceValue) Type() string {
+	return "choice"
+}

cmd/podman/volumes/list.go

@@ -9,8 +9,8 @@ import (
 	"strings"
 	"text/tabwriter"
 
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -25,7 +25,7 @@ and the output format can be changed to JSON or a user specified Go template.`
 	lsCommand = &cobra.Command{
 		Use:     "ls",
 		Aliases: []string{"list"},
-		Args:    common.NoArgs,
+		Args:    validate.NoArgs,
 		Short:   "List volumes",
 		Long:    volumeLsDescription,
 		RunE:    list,

cmd/podman/volumes/prune.go

@@ -7,9 +7,9 @@ import (
 	"os"
 	"strings"
 
-	"github.com/containers/libpod/cmd/podman/common"
 	"github.com/containers/libpod/cmd/podman/registry"
 	"github.com/containers/libpod/cmd/podman/utils"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/pkg/errors"
 	"github.com/spf13/cobra"
@@ -22,7 +22,7 @@ var (
   Note all data will be destroyed.`
 	pruneCommand = &cobra.Command{
 		Use:   "prune",
-		Args:  common.NoArgs,
+		Args:  validate.NoArgs,
 		Short: "Remove all unused volumes",
 		Long:  volumePruneDescription,
 		RunE:  prune,

cmd/podman/volumes/volume.go

@@ -2,6 +2,7 @@ package volumes
 
 import (
 	"github.com/containers/libpod/cmd/podman/registry"
+	"github.com/containers/libpod/cmd/podman/validate"
 	"github.com/containers/libpod/pkg/domain/entities"
 	"github.com/spf13/cobra"
 )
@@ -16,7 +17,7 @@ var (
 		Short:            "Manage volumes",
 		Long:             "Volumes are created in and can be shared between containers",
 		TraverseChildren: true,
-		RunE:             registry.SubCommandExists,
+		RunE:             validate.SubCommandExists,
 	}
 )