commands: move version command to separate pkg

command/commands.go

@@ -39,6 +39,7 @@ import (
 	"github.com/hashicorp/consul/command/snapshot"
 	"github.com/hashicorp/consul/command/snapshotinspect"
 	"github.com/hashicorp/consul/command/validate"
+	versioncmd "github.com/hashicorp/consul/command/version"
 	"github.com/hashicorp/consul/version"
 	"github.com/mitchellh/cli"
 )
@@ -219,10 +220,7 @@ func init() {
 		},
 
 		"version": func() (cli.Command, error) {
-			return &VersionCommand{
-				HumanVersion: version.GetHumanVersion(),
-				UI:           ui,
-			}, nil
+			return versioncmd.New(ui, version.GetHumanVersion()), nil
 		},
 
 		"watch": func() (cli.Command, error) {

command/version/version.go

@@ -1,4 +1,4 @@
-package command
+package version
 
 import (
 	"fmt"
@@ -8,18 +8,25 @@ import (
 	"github.com/mitchellh/cli"
 )
 
-// VersionCommand is a Command implementation prints the version.
-type VersionCommand struct {
-	HumanVersion string
-	UI           cli.Ui
+func New(ui cli.Ui, version string) *cmd {
+	return &cmd{UI: ui, version: version}
 }
 
-func (c *VersionCommand) Help() string {
+type cmd struct {
+	UI      cli.Ui
+	version string
+}
+
+func (c *cmd) Synopsis() string {
+	return "Prints the Consul version"
+}
+
+func (c *cmd) Help() string {
 	return ""
 }
 
-func (c *VersionCommand) Run(_ []string) int {
-	c.UI.Output(fmt.Sprintf("Consul %s", c.HumanVersion))
+func (c *cmd) Run(_ []string) int {
+	c.UI.Output(fmt.Sprintf("Consul %s", c.version))
 
 	rpcProtocol, err := config.DefaultRPCProtocol()
 	if err != nil {
@@ -36,7 +43,3 @@ func (c *VersionCommand) Run(_ []string) int {
 
 	return 0
 }
-
-func (c *VersionCommand) Synopsis() string {
-	return "Prints the Consul version"
-}

command/version/version_test.go

@@ -0,0 +1,15 @@
+package version
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/mitchellh/cli"
+)
+
+func TestVersionCommand_noTabs(t *testing.T) {
+	t.Parallel()
+	if strings.ContainsRune(New(cli.NewMockUi(), "").Help(), '\t') {
+		t.Fatal("usage has tabs")
+	}
+}

command/version_test.go

@@ -1,12 +0,0 @@
-package command
-
-import (
-	"testing"
-
-	"github.com/mitchellh/cli"
-)
-
-func TestVersionCommand_implements(t *testing.T) {
-	t.Parallel()
-	var _ cli.Command = &VersionCommand{}
-}