// Copyright 2026 The Erigon Authors
// This file is part of Erigon.
//
// Erigon is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Erigon is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Erigon. If not, see <http://www.gnu.org/licenses/>.

package handler

import (
	"encoding/json"
	"testing"

	"github.com/stretchr/testify/require"
)

// Per the beacon-APIs spec, Uint64 fields in ValidatorIdentityResponse must be
// serialized as JSON strings. Regression test for erigon#20562.
func TestValidatorIdentityResponseJSONUint64AsString(t *testing.T) {
	v := &validatorIdentityResponse{Index: 1, ActivationEpoch: 1}
	got, err := json.Marshal(v)
	require.NoError(t, err)
	require.Contains(t, string(got), `"index":"1"`)
	require.Contains(t, string(got), `"activation_epoch":"1"`)
}
