Merge pull request kubernetes#71906 from Pingan2017/remove-deprecatedAlias

remove unused func deprecatedAlias

Author: k8s-ci-robot

pkg/kubectl/cmd/BUILD

@@ -80,7 +80,6 @@ go_test(
     deps = [
         "//pkg/kubectl/cmd/util:go_default_library",
         "//staging/src/k8s.io/cli-runtime/pkg/genericclioptions:go_default_library",
-        "//vendor/github.com/spf13/cobra:go_default_library",
     ],
 )
 

pkg/kubectl/cmd/cmd.go

@@ -572,18 +572,3 @@ func NewKubectlCommand(in io.Reader, out, err io.Writer) *cobra.Command {
 func runHelp(cmd *cobra.Command, args []string) {
 	cmd.Help()
 }
-
-// deprecatedAlias is intended to be used to create a "wrapper" command around
-// an existing command. The wrapper works the same but prints a deprecation
-// message before running. This command is identical functionality.
-func deprecatedAlias(deprecatedVersion string, cmd *cobra.Command) *cobra.Command {
-	// Have to be careful here because Cobra automatically extracts the name
-	// of the command from the .Use field.
-	originalName := cmd.Name()
-
-	cmd.Use = deprecatedVersion
-	cmd.Deprecated = fmt.Sprintf("use %q instead", originalName)
-	cmd.Short = fmt.Sprintf("%s. This command is deprecated, use %q instead", cmd.Short, originalName)
-	cmd.Hidden = true
-	return cmd
-}

pkg/kubectl/cmd/cmd_test.go

@@ -17,16 +17,12 @@ limitations under the License.
 package cmd
 
 import (
-	"bytes"
 	"fmt"
 	"io/ioutil"
 	"os"
 	"reflect"
-	"strings"
 	"testing"
 
-	"github.com/spf13/cobra"
-
 	"k8s.io/cli-runtime/pkg/genericclioptions"
 	cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
 )
@@ -57,56 +53,6 @@ func TestNormalizationFuncGlobalExistence(t *testing.T) {
 	}
 }
 
-func Test_deprecatedAlias(t *testing.T) {
-	var correctCommandCalled bool
-	makeCobraCommand := func() *cobra.Command {
-		cobraCmd := new(cobra.Command)
-		cobraCmd.Use = "print five lines"
-		cobraCmd.Run = func(*cobra.Command, []string) {
-			correctCommandCalled = true
-		}
-		return cobraCmd
-	}
-
-	original := makeCobraCommand()
-	alias := deprecatedAlias("echo", makeCobraCommand())
-
-	if len(alias.Deprecated) == 0 {
-		t.Error("deprecatedAlias should always have a non-empty .Deprecated")
-	}
-	if !strings.Contains(alias.Deprecated, "print") {
-		t.Error("deprecatedAlias should give the name of the new function in its .Deprecated field")
-	}
-	if !alias.Hidden {
-		t.Error("deprecatedAlias should never have .Hidden == false (deprecated aliases should be hidden)")
-	}
-
-	if alias.Name() != "echo" {
-		t.Errorf("deprecatedAlias has name %q, expected %q",
-			alias.Name(), "echo")
-	}
-	if original.Name() != "print" {
-		t.Errorf("original command has name %q, expected %q",
-			original.Name(), "print")
-	}
-
-	buffer := new(bytes.Buffer)
-	alias.SetOutput(buffer)
-	alias.Execute()
-	str := buffer.String()
-	if !strings.Contains(str, "deprecated") || !strings.Contains(str, "print") {
-		t.Errorf("deprecation warning %q does not include enough information", str)
-	}
-
-	// It would be nice to test to see that original.Run == alias.Run
-	// Unfortunately Golang does not allow comparing functions. I could do
-	// this with reflect, but that's technically invoking undefined
-	// behavior. Best we can do is make sure that the function is called.
-	if !correctCommandCalled {
-		t.Errorf("original function doesn't appear to have been called by alias")
-	}
-}
-
 func TestKubectlCommandHandlesPlugins(t *testing.T) {
 	tests := []struct {
 		name             string