path: root/p2p/enode/idscheme_test.go

// Copyright 2018 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library 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.
//
// The go-ethereum library 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 the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package enode

import (
    "bytes"
    "crypto/ecdsa"
    "encoding/hex"
    "math/big"
    "testing"

    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/p2p/enr"
    "github.com/ethereum/go-ethereum/rlp"
    "github.com/stretchr/testify/assert"
    "github.com/stretchr/testify/require"
)

var (
    privkey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
    pubkey     = &privkey.PublicKey
)

func TestEmptyNodeID(t *testing.T) {
    var r enr.Record
    if addr := ValidSchemes.NodeAddr(&r); addr != nil {
        t.Errorf("wrong address on empty record: got %v, want %v", addr, nil)
    }

    require.NoError(t, SignV4(&r, privkey))
    expected := "a448f24c6d18e575453db13171562b71999873db5b286df957af199ec94617f7"
    assert.Equal(t, expected, hex.EncodeToString(ValidSchemes.NodeAddr(&r)))
}

// Checks that failure to sign leaves the record unmodified.
func TestSignError(t *testing.T) {
    invalidKey := &ecdsa.PrivateKey{D: new(big.Int), PublicKey: *pubkey}

    var r enr.Record
    emptyEnc, _ := rlp.EncodeToBytes(&r)
    if err := SignV4(&r, invalidKey); err == nil {
        t.Fatal("expected error from SignV4")
    }
    newEnc, _ := rlp.EncodeToBytes(&r)
    if !bytes.Equal(newEnc, emptyEnc) {
        t.Fatal("record modified even though signing failed")
    }
}

// TestGetSetSecp256k1 tests encoding/decoding and setting/getting of the Secp256k1 key.
func TestGetSetSecp256k1(t *testing.T) {
    var r enr.Record
    if err := SignV4(&r, privkey); err != nil {
        t.Fatal(err)
    }

    var pk Secp256k1
    require.NoError(t, r.Load(&pk))
    assert.EqualValues(t, pubkey, &pk)
}