lastEncryptRequest *kmsapi.EncryptRequest
	inFailedState      bool
	ver                string
	socketPath         string
	keyID              string
}

// NewBase64Plugin is a constructor for Base64Plugin.
func NewBase64Plugin(t testing.TB, socketPath string) *Base64Plugin {
	server := grpc.NewServer()
	result := &Base64Plugin{
		grpcServer: server,
		mu:         &sync.Mutex{},
		ver:        kmsapiVersion,