from docs_src.app_testing.app_b_an import test_main


def test_app():
    test_main.test_create_existing_item()
    test_main.test_create_item()
    test_main.test_create_item_bad_token()
    test_main.test_read_nonexistent_item()
    test_main.test_read_item()

Wenn Sie in Ihren Tests Ihre Event-Handler (`startup` und `shutdown`) ausführen wollen, können Sie den `TestClient` mit einer `with`-Anweisung verwenden:

```Python hl_lines="9-12  20-24"
{!../../../docs_src/app_testing/tutorial003.py!}

	featuregatetesting "k8s.io/component-base/featuregate/testing"
	"k8s.io/component-helpers/storage/volume"
	csitrans "k8s.io/csi-translation-lib"
	"k8s.io/klog/v2/ktesting"
	"k8s.io/kubernetes/pkg/controller"
	pvtesting "k8s.io/kubernetes/pkg/controller/volume/persistentvolume/testing"
	"k8s.io/kubernetes/pkg/features"
	"k8s.io/kubernetes/pkg/volume/csimigration"
	"k8s.io/kubernetes/pkg/volume/util"
)

import (
	"errors"
	"testing"

	v1 "k8s.io/api/core/v1"
	storage "k8s.io/api/storage/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/component-helpers/storage/volume"
	"k8s.io/klog/v2/ktesting"
	pvtesting "k8s.io/kubernetes/pkg/controller/volume/persistentvolume/testing"
)

// Test single call to syncVolume, expecting recycling to happen.
// 1. Fill in the controller with initial data
// 2. Call the syncVolume *once*.

	storage "k8s.io/api/storage/v1"
	utilfeature "k8s.io/apiserver/pkg/util/feature"
	featuregatetesting "k8s.io/component-base/featuregate/testing"
	"k8s.io/component-helpers/storage/volume"
	"k8s.io/klog/v2/ktesting"
	pvtesting "k8s.io/kubernetes/pkg/controller/volume/persistentvolume/testing"
	"k8s.io/kubernetes/pkg/features"
)

// Test single call to syncVolume, expecting recycling to happen.
// 1. Fill in the controller with initial data

	"net/http/httputil"
	"net/url"
	"reflect"
	"strconv"
	"strings"
	"sync"
	"testing"
	"time"

	"github.com/emicklei/go-restful/v3"
	"github.com/google/go-cmp/cmp"

	"k8s.io/apimachinery/pkg/api/apitesting/fuzzer"
	apiequality "k8s.io/apimachinery/pkg/api/equality"
	apierrors "k8s.io/apimachinery/pkg/api/errors"
	"k8s.io/apimachinery/pkg/api/meta"
	metainternalversion "k8s.io/apimachinery/pkg/apis/meta/internalversion"

	celschema "k8s.io/apiextensions-apiserver/pkg/apiserver/schema/cel"
	apiextensionsfeatures "k8s.io/apiextensions-apiserver/pkg/features"
	"k8s.io/apimachinery/pkg/api/apitesting/fuzzer"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"
	"k8s.io/apimachinery/pkg/runtime/serializer"
	"k8s.io/apimachinery/pkg/util/json"
	"k8s.io/apimachinery/pkg/util/validation/field"

	"k8s.io/apimachinery/pkg/types"
	"k8s.io/apimachinery/pkg/util/uuid"
	fakeclient "k8s.io/client-go/kubernetes/fake"
	"k8s.io/component-base/metrics/testutil"
	"k8s.io/kubernetes/pkg/volume"
	csitesting "k8s.io/kubernetes/pkg/volume/csi/testing"
	volumetesting "k8s.io/kubernetes/pkg/volume/testing"
	"k8s.io/kubernetes/pkg/volume/util"
	volumetypes "k8s.io/kubernetes/pkg/volume/util/types"
)

				Spec:       v1.PodSpec{ServiceAccountName: "foo"},
			}
			scheme.Default(pod)

			client := &fake.Clientset{}
			client.AddReactor("create", "serviceaccounts", clitesting.ReactionFunc(func(action clitesting.Action) (bool, runtime.Object, error) {
				tr := action.(clitesting.CreateAction).GetObject().(*authenticationv1.TokenRequest)
				scheme.Default(tr)
				if len(tr.Spec.Audiences) == 0 {
					tr.Spec.Audiences = []string{"https://api"}

				}
				scheme.Default(test.driver)
				client = fakeclient.NewSimpleClientset(test.driver)
			}
			client.PrependReactor("create", "serviceaccounts", clitesting.ReactionFunc(func(action clitesting.Action) (bool, runtime.Object, error) {
				tr := action.(clitesting.CreateAction).GetObject().(*authenticationv1.TokenRequest)
				scheme.Default(tr)
				if len(tr.Spec.Audiences) == 0 {
					tr.Spec.Audiences = []string{"api"}