Fix: fix uninstallation continues when answer is no

Signed-off-by: Charlie Chiang <charlie_c_0129@outlook.com>
(cherry picked from commit 81115ef6ff68808d907d0183c9ea0c611078b78d)

references/cli/uninstall.go

@@ -17,6 +17,7 @@ limitations under the License.
 package cli
 
 import (
+	"bufio"
 	"context"
 	"fmt"
 	"time"
@@ -48,11 +49,15 @@ type UnInstallArgs struct {
 	Namespace  string
 	Detail     bool
 	force      bool
+	cancel     bool
 }
 
 // NewUnInstallCommand creates `uninstall` command to uninstall vela core
 func NewUnInstallCommand(c common.Args, order string, ioStreams util.IOStreams) *cobra.Command {
-	unInstallArgs := &UnInstallArgs{Args: c, userInput: NewUserInput(), helmHelper: helm.NewHelper()}
+	unInstallArgs := &UnInstallArgs{Args: c, userInput: &UserInput{
+		Writer: ioStreams.Out,
+		Reader: bufio.NewReader(ioStreams.In),
+	}, helmHelper: helm.NewHelper()}
 	cmd := &cobra.Command{
 		Use:     "uninstall",
 		Short:   "Uninstalls KubeVela from a Kubernetes cluster",
@@ -60,8 +65,8 @@ func NewUnInstallCommand(c common.Args, order string, ioStreams util.IOStreams)
 		Long:    "Uninstalls KubeVela from a Kubernetes cluster.",
 		Args:    cobra.ExactArgs(0),
 		PreRunE: func(cmd *cobra.Command, args []string) error {
-			userConfirmation := unInstallArgs.userInput.AskBool("Would you like to uninstall KubeVela from this cluster?", &UserInputOptions{AssumeYes: assumeYes})
-			if !userConfirmation {
+			unInstallArgs.cancel = unInstallArgs.userInput.AskBool("Would you like to uninstall KubeVela from this cluster?", &UserInputOptions{AssumeYes: assumeYes})
+			if !unInstallArgs.cancel {
 				return nil
 			}
 			kubeClient, err := c.GetClient()
@@ -98,6 +103,9 @@ func NewUnInstallCommand(c common.Args, order string, ioStreams util.IOStreams)
 			return nil
 		},
 		RunE: func(cmd *cobra.Command, args []string) error {
+			if !unInstallArgs.cancel {
+				return nil
+			}
 			ioStreams.Info("Starting to uninstall KubeVela")
 			restConfig, err := c.GetConfig()
 			if err != nil {

references/cli/uninstall_test.go

@@ -19,14 +19,20 @@ package cli
 import (
 	"context"
 	"fmt"
+	"os"
+	"strings"
+	"testing"
 	"time"
 
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	"github.com/stretchr/testify/assert"
 	"sigs.k8s.io/yaml"
 
 	"github.com/oam-dev/kubevela/apis/core.oam.dev/v1beta1"
 	"github.com/oam-dev/kubevela/pkg/oam/util"
+	"github.com/oam-dev/kubevela/pkg/utils/common"
+	pkgutils "github.com/oam-dev/kubevela/pkg/utils/util"
 )
 
 var _ = Describe("Test Install Command", func() {
@@ -63,6 +69,17 @@ var _ = Describe("Test Install Command", func() {
 	})
 })
 
+func TestUninstall(t *testing.T) {
+	// Test answering NO when prompted. Should just exit.
+	cmd := NewUnInstallCommand(common.Args{}, "", pkgutils.IOStreams{
+		Out: os.Stdout,
+		In:  strings.NewReader("n\n"),
+	})
+	cmd.SetArgs([]string{})
+	err := cmd.Execute()
+	assert.Nil(t, err, "should just exit if answer is no")
+}
+
 var fluxcdYaml = `
 apiVersion: core.oam.dev/v1beta1
 kind: Application