Merge pull request #124530 from sttts/sttts-controlplane-plumbing-split

Step 12 - Add generic controlplane example

test/integration/controlplane/generic_test.go

@@ -0,0 +1,136 @@
+/*
+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 controlplane
+
+import (
+	"context"
+	"strings"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/stretchr/testify/require"
+	corev1 "k8s.io/api/core/v1"
+	apiextensionsclientset "k8s.io/apiextensions-apiserver/pkg/client/clientset/clientset"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/util/sets"
+	"k8s.io/client-go/dynamic"
+	"k8s.io/client-go/kubernetes"
+	genericcontrolplanetesting "k8s.io/kubernetes/pkg/controlplane/apiserver/samples/generic/server/testing"
+	"k8s.io/kubernetes/test/integration/etcd"
+	"k8s.io/kubernetes/test/integration/framework"
+)
+
+func TestGenericControlplaneStartUp(t *testing.T) {
+	server, err := genericcontrolplanetesting.StartTestServer(t, genericcontrolplanetesting.NewDefaultTestServerOptions(), nil, framework.SharedEtcd())
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer server.TearDownFn()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	t.Cleanup(cancel)
+
+	client, err := kubernetes.NewForConfig(server.ClientConfig)
+	if err != nil {
+		t.Fatal(err)
+	}
+	dynamicClient, err := dynamic.NewForConfig(server.ClientConfig)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = client.RESTClient().Get().AbsPath("/readyz").Do(ctx).Raw()
+	require.NoError(t, err)
+
+	groups, err := client.Discovery().ServerPreferredResources()
+	require.NoError(t, err)
+
+	t.Logf("Found %d API groups", len(groups))
+	grs := sets.New[string]()
+	for _, g := range groups {
+		var group string
+		comps := strings.SplitN(g.GroupVersion, "/", 2)
+		if len(comps) == 2 {
+			group = comps[0]
+		}
+		for _, r := range g.APIResources {
+			grs.Insert(schema.GroupResource{Group: group, Resource: r.Name}.String())
+		}
+	}
+	expected := sets.New[string](
+		"apiservices.apiregistration.k8s.io",
+		"certificatesigningrequests.certificates.k8s.io",
+		"clusterrolebindings.rbac.authorization.k8s.io",
+		"clusterroles.rbac.authorization.k8s.io",
+		"configmaps",
+		"customresourcedefinitions.apiextensions.k8s.io",
+		"events",
+		"events.events.k8s.io",
+		"flowschemas.flowcontrol.apiserver.k8s.io",
+		"leases.coordination.k8s.io",
+		"localsubjectaccessreviews.authorization.k8s.io",
+		"mutatingwebhookconfigurations.admissionregistration.k8s.io",
+		"namespaces",
+		"prioritylevelconfigurations.flowcontrol.apiserver.k8s.io",
+		"resourcequotas",
+		"rolebindings.rbac.authorization.k8s.io",
+		"roles.rbac.authorization.k8s.io",
+		"secrets",
+		"selfsubjectaccessreviews.authorization.k8s.io",
+		"selfsubjectreviews.authentication.k8s.io",
+		"selfsubjectrulesreviews.authorization.k8s.io",
+		"serviceaccounts",
+		"storageversions.internal.apiserver.k8s.io",
+		"subjectaccessreviews.authorization.k8s.io",
+		"tokenreviews.authentication.k8s.io",
+		"validatingadmissionpolicies.admissionregistration.k8s.io",
+		"validatingadmissionpolicybindings.admissionregistration.k8s.io",
+		"validatingwebhookconfigurations.admissionregistration.k8s.io",
+	)
+	if diff := cmp.Diff(sets.List(expected), sets.List(grs)); diff != "" {
+		t.Fatalf("unexpected API groups: +want, -got\n%s", diff)
+	}
+
+	t.Logf("Create cluster scoped resource: namespace %q", "test")
+	if _, err := client.CoreV1().Namespaces().Create(ctx, &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: "test"}}, metav1.CreateOptions{}); err != nil {
+		t.Fatal(err)
+	}
+
+	t.Logf("Create namesapces resource: configmap %q", "config")
+	if _, err := client.CoreV1().ConfigMaps("test").Create(ctx, &corev1.ConfigMap{
+		ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "config"},
+		Data:       map[string]string{"foo": "bar"},
+	}, metav1.CreateOptions{}); err != nil {
+		t.Fatal(err)
+	}
+
+	t.Logf("Create CRD")
+	etcd.CreateTestCRDs(t, apiextensionsclientset.NewForConfigOrDie(server.ClientConfig), false, etcd.GetCustomResourceDefinitionData()...)
+	if _, err := dynamicClient.Resource(schema.GroupVersionResource{Group: "awesome.bears.com", Version: "v1", Resource: "pandas"}).Create(ctx, &unstructured.Unstructured{
+		Object: map[string]interface{}{
+			"apiVersion": "awesome.bears.com/v1",
+			"kind":       "Panda",
+			"metadata": map[string]interface{}{
+				"name": "baobao",
+			},
+		},
+	}, metav1.CreateOptions{}); err != nil {
+		t.Error(err)
+	}
+}