operator/pkg/tasks/deinit: unit test kubeconfig

In this commit, we unit test kubeconfig deinit task in the operator
package on cleaning up the secret if it has the given labels.

Signed-off-by: Mohamed Awnallah <mohamedmohey2352@gmail.com>

operator/pkg/tasks/deinit/kubeconfig_test.go

@@ -0,0 +1,125 @@
+/*
+Copyright 2024 The Karmada Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package tasks
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"testing"
+
+	corev1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	fakeclientset "k8s.io/client-go/kubernetes/fake"
+
+	"github.com/karmada-io/karmada/operator/pkg/constants"
+	"github.com/karmada-io/karmada/operator/pkg/util"
+	"github.com/karmada-io/karmada/operator/pkg/util/apiclient"
+	"github.com/karmada-io/karmada/operator/pkg/workflow"
+	"github.com/karmada-io/karmada/test/helper"
+)
+
+func TestNewCleanupKubeconfigTask(t *testing.T) {
+	tests := []struct {
+		name     string
+		wantTask *workflow.Task
+	}{
+		{
+			name: "NewCleanupKubeconfigTask",
+			wantTask: &workflow.Task{
+				Name: "cleanup-kubeconfig",
+				Run:  runCleanupKubeconfig,
+			},
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			cleanupKubeconfigTask := NewCleanupKubeconfigTask()
+			if err := util.DeepEqualTasks(cleanupKubeconfigTask, *test.wantTask); err != nil {
+				t.Errorf("unexpected error, got: %v", err)
+			}
+		})
+	}
+}
+
+func TestRunCleanupKubeconfig(t *testing.T) {
+	name, namespace := "karmada-demo", "test"
+	tests := []struct {
+		name    string
+		runData workflow.RunData
+		secret  *corev1.Secret
+		prep    func(workflow.RunData, *corev1.Secret) error
+		verify  func(rd workflow.RunData, s *corev1.Secret) error
+		wantErr bool
+		errMsg  string
+	}{
+		{
+			name:    "RunCleanupKubeconfig_InvalidTypeAssertion_TypeAssertionIsInvalid",
+			runData: &MyTestData{Data: "test"},
+			prep:    func(workflow.RunData, *corev1.Secret) error { return nil },
+			verify:  func(workflow.RunData, *corev1.Secret) error { return nil },
+			wantErr: true,
+			errMsg:  "cleanup-kubeconfig task invoked with an invalid data struct",
+		},
+		{
+			name: "RunCleanupKubeconfig_DeleteSecretWithKarmadaOperatorLabel_SecretDeleted",
+			runData: &TestDeInitData{
+				name:         name,
+				namespace:    namespace,
+				remoteClient: fakeclientset.NewSimpleClientset(),
+			},
+			secret: helper.NewSecret(namespace, util.AdminKubeconfigSecretName(name), map[string][]byte{}),
+			prep: func(rd workflow.RunData, s *corev1.Secret) error {
+				data := rd.(*TestDeInitData)
+				s.Labels = constants.KarmadaOperatorLabel
+				if err := apiclient.CreateOrUpdateSecret(data.RemoteClient(), s); err != nil {
+					return fmt.Errorf("failed to create secret, got err: %v", err)
+				}
+				return nil
+			},
+			verify: func(rd workflow.RunData, s *corev1.Secret) error {
+				data := rd.(*TestDeInitData)
+				_, err := data.RemoteClient().CoreV1().Secrets(s.GetNamespace()).Get(context.TODO(), s.GetName(), metav1.GetOptions{})
+				if err == nil {
+					return fmt.Errorf("expected secret to be deleted, but got err: %v", err)
+				}
+				return nil
+			},
+			wantErr: false,
+		},
+	}
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			if err := test.prep(test.runData, test.secret); err != nil {
+				t.Errorf("failed to prep the test env before cleaning the kubeconfig, got error: %v", err)
+			}
+			err := runCleanupKubeconfig(test.runData)
+			if err == nil && test.wantErr {
+				t.Error("expected an error, but got none")
+			}
+			if err != nil && !test.wantErr {
+				t.Errorf("unexpected error, got: %v", err)
+			}
+			if err != nil && test.wantErr && !strings.Contains(err.Error(), test.errMsg) {
+				t.Errorf("expected error message %s to be in %s", test.errMsg, err.Error())
+			}
+			if err := test.verify(test.runData, test.secret); err != nil {
+				t.Errorf("failed to verify the deletion of secret, got error: %v", err)
+			}
+		})
+	}
+}