Add tests

Signed-off-by: Joe Betz <jpbetz@google.com>

staging/src/k8s.io/api/openapi_models_test.go

@@ -0,0 +1,77 @@
+/*
+Copyright 2025 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 api
+
+import (
+	"reflect"
+	"strings"
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+func TestOpenAPIDefinitionNames(t *testing.T) {
+	scheme := runtime.NewScheme()
+	for _, builder := range groups {
+		if err := builder.AddToScheme(scheme); err != nil {
+			t.Fatalf("unexpected error adding to scheme: %v", err)
+		}
+	}
+
+	kinds := scheme.AllKnownTypes()
+	for gvk := range kinds {
+		if gvk.Version == runtime.APIVersionInternal {
+			continue
+		}
+		t.Run(gvk.String(), func(t *testing.T) {
+			example, err := scheme.New(gvk)
+			if err != nil {
+				t.Fatalf("unexpected error creating example: %v", err)
+			}
+
+			namer, ok := example.(OpenAPIModelNamer)
+			if !ok {
+				t.Fatalf("type %v does not implement OpenAPICanonicalTypeName\n", gvk)
+			}
+			lookupName := namer.OpenAPIModelName()
+
+			rtype := reflect.TypeOf(example).Elem()
+			reflectName := ToRESTFriendlyName(rtype.PkgPath() + "." + rtype.Name())
+
+			if lookupName != reflectName {
+				t.Errorf("expected %v, got %v", reflectName, lookupName)
+			}
+		})
+	}
+}
+
+type OpenAPIModelNamer interface {
+	OpenAPIModelName() string
+}
+
+func ToRESTFriendlyName(name string) string {
+	nameParts := strings.Split(name, "/")
+	// Reverse first part. e.g., io.k8s... instead of k8s.io...
+	if len(nameParts) > 0 && strings.Contains(nameParts[0], ".") {
+		parts := strings.Split(nameParts[0], ".")
+		for i, j := 0, len(parts)-1; i < j; i, j = i+1, j-1 {
+			parts[i], parts[j] = parts[j], parts[i]
+		}
+		nameParts[0] = strings.Join(parts, ".")
+	}
+	return strings.Join(nameParts, ".")
+}

staging/src/k8s.io/apiextensions-apiserver/pkg/apis/openapi_models_test.go

@@ -0,0 +1,60 @@
+/*
+Copyright 2025 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 api
+
+import (
+	"reflect"
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/kube-openapi/pkg/util"
+)
+
+func TestOpenAPIDefinitionNames(t *testing.T) {
+	scheme := runtime.NewScheme()
+	for _, builder := range groups {
+		if err := builder.AddToScheme(scheme); err != nil {
+			t.Fatalf("unexpected error adding to scheme: %v", err)
+		}
+	}
+
+	kinds := scheme.AllKnownTypes()
+	for gvk := range kinds {
+		if gvk.Version == runtime.APIVersionInternal {
+			continue
+		}
+		t.Run(gvk.String(), func(t *testing.T) {
+			example, err := scheme.New(gvk)
+			if err != nil {
+				t.Fatalf("unexpected error creating example: %v", err)
+			}
+
+			namer, ok := example.(util.OpenAPIModelNamer)
+			if !ok {
+				t.Fatalf("type %v does not implement OpenAPICanonicalTypeName\n", gvk)
+			}
+			lookupName := namer.OpenAPIModelName()
+
+			rtype := reflect.TypeOf(example).Elem()
+			reflectName := util.ToRESTFriendlyName(rtype.PkgPath() + "." + rtype.Name())
+
+			if lookupName != reflectName {
+				t.Errorf("expected %v, got %v", reflectName, lookupName)
+			}
+		})
+	}
+}

staging/src/k8s.io/kube-aggregator/pkg/apis/openapi_models_test.go

@@ -0,0 +1,68 @@
+/*
+Copyright 2025 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 apis
+
+import (
+	"reflect"
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/kube-openapi/pkg/util"
+
+	apiregistrationv1 "k8s.io/kube-aggregator/pkg/apis/apiregistration/v1"
+	apiregistrationv1beta1 "k8s.io/kube-aggregator/pkg/apis/apiregistration/v1beta1"
+)
+
+var groups = []runtime.SchemeBuilder{
+	apiregistrationv1.SchemeBuilder,
+	apiregistrationv1beta1.SchemeBuilder,
+}
+
+func TestOpenAPIDefinitionNames(t *testing.T) {
+	scheme := runtime.NewScheme()
+	for _, builder := range groups {
+		if err := builder.AddToScheme(scheme); err != nil {
+			t.Fatalf("unexpected error adding to scheme: %v", err)
+		}
+	}
+
+	kinds := scheme.AllKnownTypes()
+	for gvk := range kinds {
+		if gvk.Version == runtime.APIVersionInternal {
+			continue
+		}
+		t.Run(gvk.String(), func(t *testing.T) {
+			example, err := scheme.New(gvk)
+			if err != nil {
+				t.Fatalf("unexpected error creating example: %v", err)
+			}
+
+			namer, ok := example.(util.OpenAPIModelNamer)
+			if !ok {
+				t.Fatalf("type %v does not implement OpenAPICanonicalTypeName\n", gvk)
+			}
+			lookupName := namer.OpenAPIModelName()
+
+			rtype := reflect.TypeOf(example).Elem()
+			reflectName := util.ToRESTFriendlyName(rtype.PkgPath() + "." + rtype.Name())
+
+			if lookupName != reflectName {
+				t.Errorf("expected %v, got %v", reflectName, lookupName)
+			}
+		})
+	}
+}