plugeth/core/forkid/forkid_test.go

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// Copyright 2019 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 forkid
import (
"bytes"
"hash/crc32"
"math"
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp"
)
// TestCreation tests that different genesis and fork rule combinations result in
// the correct fork ID.
func TestCreation(t *testing.T) {
type testcase struct {
head uint64
time uint64
want ID
}
tests := []struct {
config *params.ChainConfig
genesis *types.Block
cases []testcase
}{
// Mainnet test cases
{
params.MainnetChainConfig,
core.DefaultGenesisBlock().ToBlock(),
[]testcase{
{0, 0, ID{Hash: checksumToBytes(0xfc64ec04), Next: 1150000}}, // Unsynced
{1149999, 0, ID{Hash: checksumToBytes(0xfc64ec04), Next: 1150000}}, // Last Frontier block
{1150000, 0, ID{Hash: checksumToBytes(0x97c2c34c), Next: 1920000}}, // First Homestead block
{1919999, 0, ID{Hash: checksumToBytes(0x97c2c34c), Next: 1920000}}, // Last Homestead block
{1920000, 0, ID{Hash: checksumToBytes(0x91d1f948), Next: 2463000}}, // First DAO block
{2462999, 0, ID{Hash: checksumToBytes(0x91d1f948), Next: 2463000}}, // Last DAO block
{2463000, 0, ID{Hash: checksumToBytes(0x7a64da13), Next: 2675000}}, // First Tangerine block
{2674999, 0, ID{Hash: checksumToBytes(0x7a64da13), Next: 2675000}}, // Last Tangerine block
{2675000, 0, ID{Hash: checksumToBytes(0x3edd5b10), Next: 4370000}}, // First Spurious block
{4369999, 0, ID{Hash: checksumToBytes(0x3edd5b10), Next: 4370000}}, // Last Spurious block
{4370000, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}}, // First Byzantium block
{7279999, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}}, // Last Byzantium block
{7280000, 0, ID{Hash: checksumToBytes(0x668db0af), Next: 9069000}}, // First and last Constantinople, first Petersburg block
{9068999, 0, ID{Hash: checksumToBytes(0x668db0af), Next: 9069000}}, // Last Petersburg block
{9069000, 0, ID{Hash: checksumToBytes(0x879d6e30), Next: 9200000}}, // First Istanbul and first Muir Glacier block
{9199999, 0, ID{Hash: checksumToBytes(0x879d6e30), Next: 9200000}}, // Last Istanbul and first Muir Glacier block
{9200000, 0, ID{Hash: checksumToBytes(0xe029e991), Next: 12244000}}, // First Muir Glacier block
{12243999, 0, ID{Hash: checksumToBytes(0xe029e991), Next: 12244000}}, // Last Muir Glacier block
{12244000, 0, ID{Hash: checksumToBytes(0x0eb440f6), Next: 12965000}}, // First Berlin block
{12964999, 0, ID{Hash: checksumToBytes(0x0eb440f6), Next: 12965000}}, // Last Berlin block
{12965000, 0, ID{Hash: checksumToBytes(0xb715077d), Next: 13773000}}, // First London block
{13772999, 0, ID{Hash: checksumToBytes(0xb715077d), Next: 13773000}}, // Last London block
{13773000, 0, ID{Hash: checksumToBytes(0x20c327fc), Next: 15050000}}, // First Arrow Glacier block
{15049999, 0, ID{Hash: checksumToBytes(0x20c327fc), Next: 15050000}}, // Last Arrow Glacier block
{15050000, 0, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 1681338455}}, // First Gray Glacier block
{20000000, 1681338454, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 1681338455}}, // Last Gray Glacier block
{20000000, 1681338455, ID{Hash: checksumToBytes(0xdce96c2d), Next: 1710338135}}, // First Shanghai block
{30000000, 1710338134, ID{Hash: checksumToBytes(0xdce96c2d), Next: 1710338135}}, // Last Shanghai block
{40000000, 1710338135, ID{Hash: checksumToBytes(0x9f3d2254), Next: 0}}, // First Cancun block
{50000000, 2000000000, ID{Hash: checksumToBytes(0x9f3d2254), Next: 0}}, // Future Cancun block
},
},
// Goerli test cases
{
params.GoerliChainConfig,
core.DefaultGoerliGenesisBlock().ToBlock(),
[]testcase{
{0, 0, ID{Hash: checksumToBytes(0xa3f5ab08), Next: 1561651}}, // Unsynced, last Frontier, Homestead, Tangerine, Spurious, Byzantium, Constantinople and first Petersburg block
{1561650, 0, ID{Hash: checksumToBytes(0xa3f5ab08), Next: 1561651}}, // Last Petersburg block
{1561651, 0, ID{Hash: checksumToBytes(0xc25efa5c), Next: 4460644}}, // First Istanbul block
{4460643, 0, ID{Hash: checksumToBytes(0xc25efa5c), Next: 4460644}}, // Last Istanbul block
{4460644, 0, ID{Hash: checksumToBytes(0x757a1c47), Next: 5062605}}, // First Berlin block
{5000000, 0, ID{Hash: checksumToBytes(0x757a1c47), Next: 5062605}}, // Last Berlin block
{5062605, 0, ID{Hash: checksumToBytes(0xB8C6299D), Next: 1678832736}}, // First London block
{6000000, 1678832735, ID{Hash: checksumToBytes(0xB8C6299D), Next: 1678832736}}, // Last London block
{6000001, 1678832736, ID{Hash: checksumToBytes(0xf9843abf), Next: 1705473120}}, // First Shanghai block
{6500002, 1705473119, ID{Hash: checksumToBytes(0xf9843abf), Next: 1705473120}}, // Last Shanghai block
{6500003, 1705473120, ID{Hash: checksumToBytes(0x70cc14e2), Next: 0}}, // First Cancun block
{6500003, 2705473120, ID{Hash: checksumToBytes(0x70cc14e2), Next: 0}}, // Future Cancun block
},
},
// Sepolia test cases
{
params.SepoliaChainConfig,
core.DefaultSepoliaGenesisBlock().ToBlock(),
[]testcase{
{0, 0, ID{Hash: checksumToBytes(0xfe3366e7), Next: 1735371}}, // Unsynced, last Frontier, Homestead, Tangerine, Spurious, Byzantium, Constantinople, Petersburg, Istanbul, Berlin and first London block
{1735370, 0, ID{Hash: checksumToBytes(0xfe3366e7), Next: 1735371}}, // Last London block
{1735371, 0, ID{Hash: checksumToBytes(0xb96cbd13), Next: 1677557088}}, // First MergeNetsplit block
{1735372, 1677557087, ID{Hash: checksumToBytes(0xb96cbd13), Next: 1677557088}}, // Last MergeNetsplit block
{1735372, 1677557088, ID{Hash: checksumToBytes(0xf7f9bc08), Next: 1706655072}}, // First Shanghai block
{1735372, 1706655071, ID{Hash: checksumToBytes(0xf7f9bc08), Next: 1706655072}}, // Last Shanghai block
{1735372, 1706655072, ID{Hash: checksumToBytes(0x88cf81d9), Next: 0}}, // First Cancun block
{1735372, 2706655072, ID{Hash: checksumToBytes(0x88cf81d9), Next: 0}}, // Future Cancun block
},
},
// Holesky test cases
{
params.HoleskyChainConfig,
core.DefaultHoleskyGenesisBlock().ToBlock(),
[]testcase{
{0, 0, ID{Hash: checksumToBytes(0xc61a6098), Next: 1696000704}}, // Unsynced, last Frontier, Homestead, Tangerine, Spurious, Byzantium, Constantinople, Petersburg, Istanbul, Berlin, London, Paris block
{123, 0, ID{Hash: checksumToBytes(0xc61a6098), Next: 1696000704}}, // First MergeNetsplit block
{123, 1696000704, ID{Hash: checksumToBytes(0xfd4f016b), Next: 1707305664}}, // First Shanghai block
{123, 1707305663, ID{Hash: checksumToBytes(0xfd4f016b), Next: 1707305664}}, // Last Shanghai block
{123, 1707305664, ID{Hash: checksumToBytes(0x9b192ad0), Next: 0}}, // First Cancun block
{123, 2707305664, ID{Hash: checksumToBytes(0x9b192ad0), Next: 0}}, // Future Cancun block
},
},
}
for i, tt := range tests {
for j, ttt := range tt.cases {
if have := NewID(tt.config, tt.genesis, ttt.head, ttt.time); have != ttt.want {
t.Errorf("test %d, case %d: fork ID mismatch: have %x, want %x", i, j, have, ttt.want)
}
}
}
}
// TestValidation tests that a local peer correctly validates and accepts a remote
// fork ID.
func TestValidation(t *testing.T) {
// Config that has not timestamp enabled
legacyConfig := *params.MainnetChainConfig
legacyConfig.ShanghaiTime = nil
legacyConfig.CancunTime = nil
tests := []struct {
config *params.ChainConfig
head uint64
time uint64
id ID
err error
}{
//------------------
// Block based tests
//------------------
// Local is mainnet Gray Glacier, remote announces the same. No future fork is announced.
{&legacyConfig, 15050000, 0, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 0}, nil},
// Local is mainnet Gray Glacier, remote announces the same. Remote also announces a next fork
// at block 0xffffffff, but that is uncertain.
{&legacyConfig, 15050000, 0, ID{Hash: checksumToBytes(0xf0afd0e3), Next: math.MaxUint64}, nil},
// Local is mainnet currently in Byzantium only (so it's aware of Petersburg), remote announces
// also Byzantium, but it's not yet aware of Petersburg (e.g. non updated node before the fork).
// In this case we don't know if Petersburg passed yet or not.
{&legacyConfig, 7279999, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 0}, nil},
// Local is mainnet currently in Byzantium only (so it's aware of Petersburg), remote announces
// also Byzantium, and it's also aware of Petersburg (e.g. updated node before the fork). We
// don't know if Petersburg passed yet (will pass) or not.
{&legacyConfig, 7279999, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}, nil},
// Local is mainnet currently in Byzantium only (so it's aware of Petersburg), remote announces
// also Byzantium, and it's also aware of some random fork (e.g. misconfigured Petersburg). As
// neither forks passed at neither nodes, they may mismatch, but we still connect for now.
{&legacyConfig, 7279999, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: math.MaxUint64}, nil},
// Local is mainnet exactly on Petersburg, remote announces Byzantium + knowledge about Petersburg. Remote
// is simply out of sync, accept.
{&legacyConfig, 7280000, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}, nil},
// Local is mainnet Petersburg, remote announces Byzantium + knowledge about Petersburg. Remote
// is simply out of sync, accept.
{&legacyConfig, 7987396, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}, nil},
// Local is mainnet Petersburg, remote announces Spurious + knowledge about Byzantium. Remote
// is definitely out of sync. It may or may not need the Petersburg update, we don't know yet.
{&legacyConfig, 7987396, 0, ID{Hash: checksumToBytes(0x3edd5b10), Next: 4370000}, nil},
// Local is mainnet Byzantium, remote announces Petersburg. Local is out of sync, accept.
{&legacyConfig, 7279999, 0, ID{Hash: checksumToBytes(0x668db0af), Next: 0}, nil},
// Local is mainnet Spurious, remote announces Byzantium, but is not aware of Petersburg. Local
// out of sync. Local also knows about a future fork, but that is uncertain yet.
{&legacyConfig, 4369999, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 0}, nil},
// Local is mainnet Petersburg. remote announces Byzantium but is not aware of further forks.
// Remote needs software update.
{&legacyConfig, 7987396, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 0}, ErrRemoteStale},
// Local is mainnet Petersburg, and isn't aware of more forks. Remote announces Petersburg +
// 0xffffffff. Local needs software update, reject.
{&legacyConfig, 7987396, 0, ID{Hash: checksumToBytes(0x5cddc0e1), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Byzantium, and is aware of Petersburg. Remote announces Petersburg +
// 0xffffffff. Local needs software update, reject.
{&legacyConfig, 7279999, 0, ID{Hash: checksumToBytes(0x5cddc0e1), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Petersburg, remote is Rinkeby Petersburg.
{&legacyConfig, 7987396, 0, ID{Hash: checksumToBytes(0xafec6b27), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Gray Glacier, far in the future. Remote announces Gopherium (non existing fork)
// at some future block 88888888, for itself, but past block for local. Local is incompatible.
//
// This case detects non-upgraded nodes with majority hash power (typical Ropsten mess).
{&legacyConfig, 88888888, 0, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 88888888}, ErrLocalIncompatibleOrStale},
// Local is mainnet Byzantium. Remote is also in Byzantium, but announces Gopherium (non existing
// fork) at block 7279999, before Petersburg. Local is incompatible.
{&legacyConfig, 7279999, 0, ID{Hash: checksumToBytes(0xa00bc324), Next: 7279999}, ErrLocalIncompatibleOrStale},
//------------------------------------
// Block to timestamp transition tests
//------------------------------------
// Local is mainnet currently in Gray Glacier only (so it's aware of Shanghai), remote announces
// also Gray Glacier, but it's not yet aware of Shanghai (e.g. non updated node before the fork).
// In this case we don't know if Shanghai passed yet or not.
{params.MainnetChainConfig, 15050000, 0, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 0}, nil},
// Local is mainnet currently in Gray Glacier only (so it's aware of Shanghai), remote announces
// also Gray Glacier, and it's also aware of Shanghai (e.g. updated node before the fork). We
// don't know if Shanghai passed yet (will pass) or not.
{params.MainnetChainConfig, 15050000, 0, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 1681338455}, nil},
// Local is mainnet currently in Gray Glacier only (so it's aware of Shanghai), remote announces
// also Gray Glacier, and it's also aware of some random fork (e.g. misconfigured Shanghai). As
// neither forks passed at neither nodes, they may mismatch, but we still connect for now.
{params.MainnetChainConfig, 15050000, 0, ID{Hash: checksumToBytes(0xf0afd0e3), Next: math.MaxUint64}, nil},
// Local is mainnet exactly on Shanghai, remote announces Gray Glacier + knowledge about Shanghai. Remote
// is simply out of sync, accept.
{params.MainnetChainConfig, 20000000, 1681338455, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 1681338455}, nil},
// Local is mainnet Shanghai, remote announces Gray Glacier + knowledge about Shanghai. Remote
// is simply out of sync, accept.
{params.MainnetChainConfig, 20123456, 1681338456, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 1681338455}, nil},
// Local is mainnet Shanghai, remote announces Arrow Glacier + knowledge about Gray Glacier. Remote
// is definitely out of sync. It may or may not need the Shanghai update, we don't know yet.
{params.MainnetChainConfig, 20000000, 1681338455, ID{Hash: checksumToBytes(0x20c327fc), Next: 15050000}, nil},
// Local is mainnet Gray Glacier, remote announces Shanghai. Local is out of sync, accept.
{params.MainnetChainConfig, 15050000, 0, ID{Hash: checksumToBytes(0xdce96c2d), Next: 0}, nil},
// Local is mainnet Arrow Glacier, remote announces Gray Glacier, but is not aware of Shanghai. Local
// out of sync. Local also knows about a future fork, but that is uncertain yet.
{params.MainnetChainConfig, 13773000, 0, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 0}, nil},
// Local is mainnet Shanghai. remote announces Gray Glacier but is not aware of further forks.
// Remote needs software update.
{params.MainnetChainConfig, 20000000, 1681338455, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 0}, ErrRemoteStale},
// Local is mainnet Gray Glacier, and isn't aware of more forks. Remote announces Gray Glacier +
// 0xffffffff. Local needs software update, reject.
{params.MainnetChainConfig, 15050000, 0, ID{Hash: checksumToBytes(checksumUpdate(0xf0afd0e3, math.MaxUint64)), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Gray Glacier, and is aware of Shanghai. Remote announces Shanghai +
// 0xffffffff. Local needs software update, reject.
{params.MainnetChainConfig, 15050000, 0, ID{Hash: checksumToBytes(checksumUpdate(0xdce96c2d, math.MaxUint64)), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Gray Glacier, far in the future. Remote announces Gopherium (non existing fork)
// at some future timestamp 8888888888, for itself, but past block for local. Local is incompatible.
//
// This case detects non-upgraded nodes with majority hash power (typical Ropsten mess).
{params.MainnetChainConfig, 888888888, 1660000000, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 1660000000}, ErrLocalIncompatibleOrStale},
// Local is mainnet Gray Glacier. Remote is also in Gray Glacier, but announces Gopherium (non existing
// fork) at block 7279999, before Shanghai. Local is incompatible.
{params.MainnetChainConfig, 19999999, 1667999999, ID{Hash: checksumToBytes(0xf0afd0e3), Next: 1667999999}, ErrLocalIncompatibleOrStale},
//----------------------
// Timestamp based tests
//----------------------
// Local is mainnet Shanghai, remote announces the same. No future fork is announced.
{params.MainnetChainConfig, 20000000, 1681338455, ID{Hash: checksumToBytes(0xdce96c2d), Next: 0}, nil},
// Local is mainnet Shanghai, remote announces the same. Remote also announces a next fork
// at time 0xffffffff, but that is uncertain.
{params.MainnetChainConfig, 20000000, 1681338455, ID{Hash: checksumToBytes(0xdce96c2d), Next: math.MaxUint64}, nil},
// Local is mainnet currently in Shanghai only (so it's aware of Cancun), remote announces
// also Shanghai, but it's not yet aware of Cancun (e.g. non updated node before the fork).
// In this case we don't know if Cancun passed yet or not.
{params.MainnetChainConfig, 20000000, 1668000000, ID{Hash: checksumToBytes(0xdce96c2d), Next: 0}, nil},
// Local is mainnet currently in Shanghai only (so it's aware of Cancun), remote announces
// also Shanghai, and it's also aware of Cancun (e.g. updated node before the fork). We
// don't know if Cancun passed yet (will pass) or not.
{params.MainnetChainConfig, 20000000, 1668000000, ID{Hash: checksumToBytes(0xdce96c2d), Next: 1710338135}, nil},
// Local is mainnet currently in Shanghai only (so it's aware of Cancun), remote announces
// also Shanghai, and it's also aware of some random fork (e.g. misconfigured Cancun). As
// neither forks passed at neither nodes, they may mismatch, but we still connect for now.
{params.MainnetChainConfig, 20000000, 1668000000, ID{Hash: checksumToBytes(0xdce96c2d), Next: math.MaxUint64}, nil},
// Local is mainnet exactly on Cancun, remote announces Shanghai + knowledge about Cancun. Remote
// is simply out of sync, accept.
{params.MainnetChainConfig, 21000000, 1710338135, ID{Hash: checksumToBytes(0xdce96c2d), Next: 1710338135}, nil},
// Local is mainnet Cancun, remote announces Shanghai + knowledge about Cancun. Remote
// is simply out of sync, accept.
{params.MainnetChainConfig, 21123456, 1710338136, ID{Hash: checksumToBytes(0xdce96c2d), Next: 1710338135}, nil},
// Local is mainnet Prague, remote announces Shanghai + knowledge about Cancun. Remote
// is definitely out of sync. It may or may not need the Prague update, we don't know yet.
//
// TODO(karalabe): Enable this when Cancun **and** Prague is specced, update all the numbers
//{params.MainnetChainConfig, 0, 0, ID{Hash: checksumToBytes(0x3edd5b10), Next: 4370000}, nil},
// Local is mainnet Shanghai, remote announces Cancun. Local is out of sync, accept.
{params.MainnetChainConfig, 21000000, 1700000000, ID{Hash: checksumToBytes(0x9f3d2254), Next: 0}, nil},
// Local is mainnet Shanghai, remote announces Cancun, but is not aware of Prague. Local
// out of sync. Local also knows about a future fork, but that is uncertain yet.
//
// TODO(karalabe): Enable this when Cancun **and** Prague is specced, update remote checksum
//{params.MainnetChainConfig, 21000000, 1678000000, ID{Hash: checksumToBytes(0x00000000), Next: 0}, nil},
// Local is mainnet Cancun. remote announces Shanghai but is not aware of further forks.
// Remote needs software update.
{params.MainnetChainConfig, 21000000, 1710338135, ID{Hash: checksumToBytes(0xdce96c2d), Next: 0}, ErrRemoteStale},
// Local is mainnet Shanghai, and isn't aware of more forks. Remote announces Shanghai +
// 0xffffffff. Local needs software update, reject.
{params.MainnetChainConfig, 20000000, 1681338455, ID{Hash: checksumToBytes(checksumUpdate(0xdce96c2d, math.MaxUint64)), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Shanghai, and is aware of Cancun. Remote announces Cancun +
// 0xffffffff. Local needs software update, reject.
{params.MainnetChainConfig, 20000000, 1668000000, ID{Hash: checksumToBytes(checksumUpdate(0x9f3d2254, math.MaxUint64)), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Shanghai, remote is random Shanghai.
{params.MainnetChainConfig, 20000000, 1681338455, ID{Hash: checksumToBytes(0x12345678), Next: 0}, ErrLocalIncompatibleOrStale},
// Local is mainnet Cancun, far in the future. Remote announces Gopherium (non existing fork)
// at some future timestamp 8888888888, for itself, but past block for local. Local is incompatible.
//
// This case detects non-upgraded nodes with majority hash power (typical Ropsten mess).
{params.MainnetChainConfig, 88888888, 8888888888, ID{Hash: checksumToBytes(0x9f3d2254), Next: 8888888888}, ErrLocalIncompatibleOrStale},
// Local is mainnet Shanghai. Remote is also in Shanghai, but announces Gopherium (non existing
// fork) at timestamp 1668000000, before Cancun. Local is incompatible.
{params.MainnetChainConfig, 20999999, 1699999999, ID{Hash: checksumToBytes(0x71147644), Next: 1700000000}, ErrLocalIncompatibleOrStale},
}
genesis := core.DefaultGenesisBlock().ToBlock()
for i, tt := range tests {
filter := newFilter(tt.config, genesis, func() (uint64, uint64) { return tt.head, tt.time })
if err := filter(tt.id); err != tt.err {
t.Errorf("test %d: validation error mismatch: have %v, want %v", i, err, tt.err)
}
}
}
// Tests that IDs are properly RLP encoded (specifically important because we
// use uint32 to store the hash, but we need to encode it as [4]byte).
func TestEncoding(t *testing.T) {
tests := []struct {
id ID
want []byte
}{
{ID{Hash: checksumToBytes(0), Next: 0}, common.Hex2Bytes("c6840000000080")},
{ID{Hash: checksumToBytes(0xdeadbeef), Next: 0xBADDCAFE}, common.Hex2Bytes("ca84deadbeef84baddcafe,")},
{ID{Hash: checksumToBytes(math.MaxUint32), Next: math.MaxUint64}, common.Hex2Bytes("ce84ffffffff88ffffffffffffffff")},
}
for i, tt := range tests {
have, err := rlp.EncodeToBytes(tt.id)
if err != nil {
t.Errorf("test %d: failed to encode forkid: %v", i, err)
continue
}
if !bytes.Equal(have, tt.want) {
t.Errorf("test %d: RLP mismatch: have %x, want %x", i, have, tt.want)
}
}
}
// Tests that time-based forks which are active at genesis are not included in
// forkid hash.
func TestTimeBasedForkInGenesis(t *testing.T) {
var (
time = uint64(1690475657)
genesis = types.NewBlockWithHeader(&types.Header{Time: time})
forkidHash = checksumToBytes(crc32.ChecksumIEEE(genesis.Hash().Bytes()))
config = func(shanghai, cancun uint64) *params.ChainConfig {
return &params.ChainConfig{
ChainID: big.NewInt(1337),
HomesteadBlock: big.NewInt(0),
DAOForkBlock: nil,
DAOForkSupport: true,
EIP150Block: big.NewInt(0),
EIP155Block: big.NewInt(0),
EIP158Block: big.NewInt(0),
ByzantiumBlock: big.NewInt(0),
ConstantinopleBlock: big.NewInt(0),
PetersburgBlock: big.NewInt(0),
IstanbulBlock: big.NewInt(0),
MuirGlacierBlock: big.NewInt(0),
BerlinBlock: big.NewInt(0),
LondonBlock: big.NewInt(0),
TerminalTotalDifficulty: big.NewInt(0),
TerminalTotalDifficultyPassed: true,
MergeNetsplitBlock: big.NewInt(0),
ShanghaiTime: &shanghai,
CancunTime: &cancun,
Ethash: new(params.EthashConfig),
}
}
)
tests := []struct {
config *params.ChainConfig
want ID
}{
// Shanghai active before genesis, skip
{config(time-1, time+1), ID{Hash: forkidHash, Next: time + 1}},
// Shanghai active at genesis, skip
{config(time, time+1), ID{Hash: forkidHash, Next: time + 1}},
// Shanghai not active, skip
{config(time+1, time+2), ID{Hash: forkidHash, Next: time + 1}},
}
for _, tt := range tests {
if have := NewID(tt.config, genesis, 0, time); have != tt.want {
t.Fatalf("incorrect forkid hash: have %x, want %x", have, tt.want)
}
}
}