feat: implements Storage Version Migration API in-tree

Signed-off-by: Nilekh Chaudhari <1626598+nilekhc@users.noreply.github.com>

pkg/apis/storagemigration/validation/validation_test.go

@@ -0,0 +1,116 @@
+/*
+Copyright 2024 The Kubernetes 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 validation
+
+import (
+	"testing"
+
+	"k8s.io/kubernetes/pkg/apis/storagemigration"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// TestValidateStorageVersionMigration tests the ValidateStorageVersionMigration function
+func TestValidateStorageVersionMigration(t *testing.T) {
+	tests := []struct {
+		name        string
+		svm         *storagemigration.StorageVersionMigration
+		errorString string
+	}{
+		{
+			name: "when all fields are non-empty",
+			svm: &storagemigration.StorageVersionMigration{
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "test-svm",
+				},
+				Spec: storagemigration.StorageVersionMigrationSpec{
+					Resource: storagemigration.GroupVersionResource{
+						Group:    "non-empty",
+						Version:  "non-empty",
+						Resource: "non-empty",
+					},
+				},
+			},
+			errorString: "",
+		},
+		{
+			name: "when all fields are empty",
+			svm: &storagemigration.StorageVersionMigration{
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "test-svm",
+				},
+				Spec: storagemigration.StorageVersionMigrationSpec{
+					Resource: storagemigration.GroupVersionResource{
+						Group:    "",
+						Version:  "",
+						Resource: "",
+					},
+				},
+			},
+			errorString: "[spec.resource.resource: Required value: resource is required, spec.resource.version: Required value: version is required]",
+		},
+		{
+			name: "when resource is empty",
+			svm: &storagemigration.StorageVersionMigration{
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "test-svm",
+				},
+				Spec: storagemigration.StorageVersionMigrationSpec{
+					Resource: storagemigration.GroupVersionResource{
+						Group:    "non-empty",
+						Version:  "non-empty",
+						Resource: "",
+					},
+				},
+			},
+			errorString: "spec.resource.resource: Required value: resource is required",
+		},
+		{
+			name: "when version is empty",
+			svm: &storagemigration.StorageVersionMigration{
+				ObjectMeta: metav1.ObjectMeta{
+					Name: "test-svm",
+				},
+				Spec: storagemigration.StorageVersionMigrationSpec{
+					Resource: storagemigration.GroupVersionResource{
+						Group:    "non-empty",
+						Version:  "",
+						Resource: "non-empty",
+					},
+				},
+			},
+			errorString: "spec.resource.version: Required value: version is required",
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			errors := ValidateStorageVersionMigration(test.svm)
+
+			errorString := ""
+			if len(errors) == 0 {
+				errorString = ""
+			} else {
+				errorString = errors.ToAggregate().Error()
+			}
+
+			if errorString != test.errorString {
+				t.Errorf("Expected error string %s, got %s", test.errorString, errorString)
+			}
+		})
+	}
+}