Add management validation tests

internal/webhook/management_webhook_test.go

@@ -0,0 +1,77 @@
+// Copyright 2024
+//
+// 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 webhook
+
+import (
+	"context"
+	"testing"
+
+	. "github.com/onsi/gomega"
+	"k8s.io/apimachinery/pkg/runtime"
+	"sigs.k8s.io/controller-runtime/pkg/client/fake"
+	"sigs.k8s.io/controller-runtime/pkg/webhook/admission"
+
+	"github.com/Mirantis/hmc/api/v1alpha1"
+	"github.com/Mirantis/hmc/test/objects/deployment"
+	"github.com/Mirantis/hmc/test/objects/management"
+	"github.com/Mirantis/hmc/test/scheme"
+)
+
+func TestManagementValidateDelete(t *testing.T) {
+	g := NewWithT(t)
+
+	ctx := context.Background()
+
+	tests := []struct {
+		name            string
+		management      *v1alpha1.Management
+		existingObjects []runtime.Object
+		err             string
+		warnings        admission.Warnings
+	}{
+		{
+			name:            "should fail if Deployment objects exist",
+			management:      management.NewManagement(),
+			existingObjects: []runtime.Object{deployment.NewDeployment()},
+			warnings:        admission.Warnings{"The Management object can't be removed if Deployment objects still exist"},
+			err:             "management deletion is forbidden",
+		},
+		{
+			name:       "should succeed",
+			management: management.NewManagement(),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			c := fake.NewClientBuilder().WithScheme(scheme.Scheme).WithRuntimeObjects(tt.existingObjects...).Build()
+			validator := &ManagementValidator{Client: c}
+			warn, err := validator.ValidateDelete(ctx, tt.management)
+			if tt.err != "" {
+				g.Expect(err).To(HaveOccurred())
+				if err.Error() != tt.err {
+					t.Fatalf("expected error '%s', got error: %s", tt.err, err.Error())
+				}
+			} else {
+				g.Expect(err).To(Succeed())
+			}
+			if len(tt.warnings) > 0 {
+				g.Expect(warn).To(Equal(tt.warnings))
+			} else {
+				g.Expect(warn).To(BeEmpty())
+			}
+		})
+	}
+}