ClientID:           "testClientID",
				areFlagsConfigured: func() bool { return true },
			},
			testSA: &ServiceAccountAuthenticationOptions{
				Issuers:  []string{"http://foo.bar.com"},
				KeyFiles: []string{"testkeyfile1", "testkeyfile2"},
			},
		},
		{
			name: "test when OIDC is invalid",
			testOIDC: &OIDCAuthenticationOptions{
				UsernameClaim:      "sub",
				SigningAlgs:        []string{"RS256"},

		if len(completed.Authentication.ServiceAccounts.KeyFiles) == 0 && completed.SecureServing.ServerCert.CertKey.KeyFile != "" {
			if kubeauthenticator.IsValidServiceAccountKeyFile(completed.SecureServing.ServerCert.CertKey.KeyFile) {
				completed.Authentication.ServiceAccounts.KeyFiles = []string{completed.SecureServing.ServerCert.CertKey.KeyFile}
			} else {

	)
	if err != nil {
		return nil, nil, fmt.Errorf("failed to apply admission: %w", err)
	}

	// Load and set the public keys.
	var pubKeys []interface{}
	for _, f := range opts.Authentication.ServiceAccounts.KeyFiles {
		keys, err := keyutil.PublicKeysFromFile(f)
		if err != nil {
			return nil, nil, fmt.Errorf("failed to parse key file %q: %w", f, err)
		}
		pubKeys = append(pubKeys, keys...)
	}

	if err != nil {
		return result, fmt.Errorf("failed to wait for default namespace to be created: %v", err)
	}

	tlsInfo := transport.TLSInfo{
		CertFile:      storageConfig.Transport.CertFile,
		KeyFile:       storageConfig.Transport.KeyFile,
		TrustedCAFile: storageConfig.Transport.TrustedCAFile,
	}
	tlsConfig, err := tlsInfo.ClientConfig()
	if err != nil {
		return result, err
	}
	etcdConfig := clientv3.Config{

	codec := apitesting.TestCodec(codecs, examplev1.SchemeGroupVersion)

	certFile, keyFile, caFile := configureTLSCerts(t)
	defer os.RemoveAll(filepath.Dir(certFile))

	// override server config to be TLS-enabled
	etcdConfig := testserver.NewTestConfig(t)
	etcdConfig.ClientTLSInfo = transport.TLSInfo{
		CertFile:      certFile,
		KeyFile:       keyFile,
		TrustedCAFile: caFile,
	}
	for i := range etcdConfig.ListenClientUrls {

						CertFile: "/cluster-signing-kubelet-serving/cert-file",
						KeyFile:  "",
					},
					KubeletClientSignerConfiguration: csrsigningconfig.CSRSigningConfiguration{
						CertFile: "",
						KeyFile:  "",
					},
					KubeAPIServerClientSignerConfiguration: csrsigningconfig.CSRSigningConfiguration{
						CertFile: "",
						KeyFile:  "",
					},

	if err != nil {
		klog.ErrorS(err, "invalid certificate and key pair from file", "certFile", m.certFile, "keyFile", m.keyFile)
		return
	}
	m.currentTLSCertificate.Store(&cert)
	klog.V(4).InfoS("loaded certificate and key pair in kubelet server certificate manager", "certFile", m.certFile, "keyFile", m.keyFile)
}

// Current returns the last valid certificate key pair loaded from files.

	CertFile string
	// KeyFile is a file containing a PEM-encoded private key for the certificate specified by CertFile
	KeyFile string
}

type GeneratableKeyCert struct {
	// CertKey allows setting an explicit cert/key file to use.
	CertKey CertKey

	// CertDirectory specifies a directory to write generated certificates to if CertFile/KeyFile aren't explicitly set.

func NewDynamicServingContentFromFiles(purpose, certFile, keyFile string) (*DynamicCertKeyPairContent, error) {
	if len(certFile) == 0 || len(keyFile) == 0 {
		return nil, fmt.Errorf("missing filename for serving cert")
	}
	name := fmt.Sprintf("%s::%s::%s", purpose, certFile, keyFile)

	ret := &DynamicCertKeyPairContent{
		name:     name,
		certFile: certFile,
		keyFile:  keyFile,
		queue: workqueue.NewTypedRateLimitingQueueWithConfig(

				certBundleFile := filepath.Join(sniDir, "cert")
				keyFile := filepath.Join(sniDir, "key")
				err := getOrCreateTestCertFiles(certBundleFile, keyFile, c.TestCertSpec)
				if err != nil {
					t.Fatalf("failed to create SNI cert %d: %v", j, err)
				}

				namedCertKeys = append(namedCertKeys, cliflag.NamedCertKey{
					KeyFile:  keyFile,
					CertFile: certBundleFile,
					Names:    c.explicitNames,
				})