operator/pkg/karmadaresource: test RBAC

In this commit, we add unit tests for the RBAC in the karamada resource
operator pkg making sure Karmada Resource View Clusterrole and Karmada
Resource Edit Clusterrole are working as expected.

Signed-off-by: Mohamed Awnallah <[email protected]>

operator/pkg/karmadaresource/rbac/rbac_test.go

@@ -0,0 +1,110 @@
+/*
+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 rbac
+
+import (
+	"testing"
+
+	rbacv1 "k8s.io/api/rbac/v1"
+	fakeclientset "k8s.io/client-go/kubernetes/fake"
+	coretesting "k8s.io/client-go/testing"
+
+	"github.com/karmada-io/karmada/pkg/util"
+)
+
+func TestEnsureKarmadaRBAC(t *testing.T) {
+	fakeClient := fakeclientset.NewSimpleClientset()
+	err := EnsureKarmadaRBAC(fakeClient)
+	if err != nil {
+		t.Fatalf("failed to ensure karmada rbac: %v", err)
+	}
+
+	actions := fakeClient.Actions()
+	if len(actions) != 4 {
+		t.Fatalf("expected 4 actions, but got %d", len(actions))
+	}
+}
+
+func TestGrantKarmadaResourceEditClusterrole(t *testing.T) {
+	fakeClient := fakeclientset.NewSimpleClientset()
+	err := grantKarmadaResourceEditClusterRole(fakeClient)
+	if err != nil {
+		t.Fatalf("failed to grant karmada resource edit clusterrole: %v", err)
+	}
+
+	// Ensure the expected action (clusterrole creation) occurred.
+	actions := fakeClient.Actions()
+	if len(actions) != 1 {
+		t.Fatalf("expected 1 action, but got %d", len(actions))
+	}
+
+	// Validate the action is a CreateAction and it's for the correct resource (clusterrole).
+	createAction, ok := actions[0].(coretesting.CreateAction)
+	if !ok {
+		t.Fatalf("expected CreateAction, but got %T", actions[0])
+	}
+
+	resourceExpected := "clusterroles"
+	if createAction.GetResource().Resource != resourceExpected {
+		t.Fatalf("expected action on %s, but got %s", resourceExpected, createAction.GetResource().Resource)
+	}
+
+	clusterRole := createAction.GetObject().(*rbacv1.ClusterRole)
+	if _, exists := clusterRole.Labels[util.KarmadaSystemLabel]; !exists {
+		t.Errorf("expected label %s to exist on the clusterrole, but it does not", util.KarmadaSystemLabel)
+	}
+
+	editClusterRoleNameExpected := "karmada-edit"
+	if clusterRole.Name != editClusterRoleNameExpected {
+		t.Errorf("expected edit cluster role name to be %s, but found %s", editClusterRoleNameExpected, clusterRole.Name)
+	}
+}
+
+func TestGrantKarmadaResourceViewClusterrole(t *testing.T) {
+	fakeClient := fakeclientset.NewSimpleClientset()
+	err := grantKarmadaResourceViewClusterRole(fakeClient)
+	if err != nil {
+		t.Fatalf("failed to grant karmada resource view clusterrole: %v", err)
+	}
+
+	// Ensure the expected action (clusterrole creation) occurred.
+	actions := fakeClient.Actions()
+	if len(actions) != 1 {
+		t.Fatalf("expected 1 action, but got %d", len(actions))
+	}
+
+	// Validate the action is a CreateAction and it's for the correct resource (clusterrole).
+	createAction, ok := actions[0].(coretesting.CreateAction)
+	if !ok {
+		t.Fatalf("expected CreateAction, but got %T", actions[0])
+	}
+
+	resourceExpected := "clusterroles"
+	if createAction.GetResource().Resource != resourceExpected {
+		t.Fatalf("expected action on %s, but got %s", resourceExpected, createAction.GetResource().Resource)
+	}
+
+	clusterRole := createAction.GetObject().(*rbacv1.ClusterRole)
+	if _, exists := clusterRole.Labels[util.KarmadaSystemLabel]; !exists {
+		t.Fatalf("expected label %s to exist on the clusterrole, but it does not", util.KarmadaSystemLabel)
+	}
+
+	viewClusterRoleNameExpected := "karmada-view"
+	if clusterRole.Name != viewClusterRoleNameExpected {
+		t.Fatalf("expected view cluster role name to be %s, but found %s", viewClusterRoleNameExpected, clusterRole.Name)
+	}
+}