return clientv3.OpResponse{}, nil
}
func (mockKV) Txn(ctx context.Context) clientv3.Txn {
	return nil
}

func TestCreateHealthcheck(t *testing.T) {
	etcdConfig := testserver.NewTestConfig(t)
	client := testserver.RunEtcd(t, etcdConfig)
	newETCD3ClientFn := newETCD3Client
	defer func() {
		newETCD3Client = newETCD3ClientFn
	}()
	tests := []struct {
		name         string
		cfg          storagebackend.Config
		want         error

type setupOption func(*setupOptions)

func withClientConfig(config *embed.Config) setupOption {
	return func(options *setupOptions) {
		options.client = func(t testing.TB) *clientv3.Client {
			return testserver.RunEtcd(t, config)
		}
	}
}

func withPrefix(prefix string) setupOption {
	return func(options *setupOptions) {
		options.prefix = prefix
	}
}