240 lines
12 KiB
Go
240 lines
12 KiB
Go
// Copyright 2019 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package forkid
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import (
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"bytes"
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"math"
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"testing"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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)
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// TestCreation tests that different genesis and fork rule combinations result in
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// the correct fork ID.
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func TestCreation(t *testing.T) {
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type testcase struct {
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head uint64
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want ID
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}
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tests := []struct {
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config *params.ChainConfig
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genesis common.Hash
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cases []testcase
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}{
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// Mainnet test cases
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{
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params.MainnetChainConfig,
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params.MainnetGenesisHash,
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[]testcase{
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{0, ID{Hash: checksumToBytes(0xfc64ec04), Next: 1150000}}, // Unsynced
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{1149999, ID{Hash: checksumToBytes(0xfc64ec04), Next: 1150000}}, // Last Frontier block
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{1150000, ID{Hash: checksumToBytes(0x97c2c34c), Next: 1920000}}, // First Homestead block
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{1919999, ID{Hash: checksumToBytes(0x97c2c34c), Next: 1920000}}, // Last Homestead block
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{1920000, ID{Hash: checksumToBytes(0x91d1f948), Next: 2463000}}, // First DAO block
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{2462999, ID{Hash: checksumToBytes(0x91d1f948), Next: 2463000}}, // Last DAO block
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{2463000, ID{Hash: checksumToBytes(0x7a64da13), Next: 2675000}}, // First Tangerine block
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{2674999, ID{Hash: checksumToBytes(0x7a64da13), Next: 2675000}}, // Last Tangerine block
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{2675000, ID{Hash: checksumToBytes(0x3edd5b10), Next: 4370000}}, // First Spurious block
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{4369999, ID{Hash: checksumToBytes(0x3edd5b10), Next: 4370000}}, // Last Spurious block
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{4370000, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}}, // First Byzantium block
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{7279999, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}}, // Last Byzantium block
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{7280000, ID{Hash: checksumToBytes(0x668db0af), Next: 9069000}}, // First and last Constantinople, first Petersburg block
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{9068999, ID{Hash: checksumToBytes(0x668db0af), Next: 9069000}}, // Last Petersburg block
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{9069000, ID{Hash: checksumToBytes(0x879d6e30), Next: 9200000}}, // First Istanbul and first Muir Glacier block
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{9199999, ID{Hash: checksumToBytes(0x879d6e30), Next: 9200000}}, // Last Istanbul and first Muir Glacier block
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{9200000, ID{Hash: checksumToBytes(0xe029e991), Next: 12244000}}, // First Muir Glacier block
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{12243999, ID{Hash: checksumToBytes(0xe029e991), Next: 12244000}}, // Last Muir Glacier block
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{12244000, ID{Hash: checksumToBytes(0x0eb440f6), Next: 0}}, // First Berlin block
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{20000000, ID{Hash: checksumToBytes(0x0eb440f6), Next: 0}}, // Future Berlin block
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},
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},
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// Ropsten test cases
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{
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params.RopstenChainConfig,
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params.RopstenGenesisHash,
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[]testcase{
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{0, ID{Hash: checksumToBytes(0x30c7ddbc), Next: 10}}, // Unsynced, last Frontier, Homestead and first Tangerine block
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{9, ID{Hash: checksumToBytes(0x30c7ddbc), Next: 10}}, // Last Tangerine block
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{10, ID{Hash: checksumToBytes(0x63760190), Next: 1700000}}, // First Spurious block
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{1699999, ID{Hash: checksumToBytes(0x63760190), Next: 1700000}}, // Last Spurious block
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{1700000, ID{Hash: checksumToBytes(0x3ea159c7), Next: 4230000}}, // First Byzantium block
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{4229999, ID{Hash: checksumToBytes(0x3ea159c7), Next: 4230000}}, // Last Byzantium block
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{4230000, ID{Hash: checksumToBytes(0x97b544f3), Next: 4939394}}, // First Constantinople block
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{4939393, ID{Hash: checksumToBytes(0x97b544f3), Next: 4939394}}, // Last Constantinople block
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{4939394, ID{Hash: checksumToBytes(0xd6e2149b), Next: 6485846}}, // First Petersburg block
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{6485845, ID{Hash: checksumToBytes(0xd6e2149b), Next: 6485846}}, // Last Petersburg block
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{6485846, ID{Hash: checksumToBytes(0x4bc66396), Next: 7117117}}, // First Istanbul block
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{7117116, ID{Hash: checksumToBytes(0x4bc66396), Next: 7117117}}, // Last Istanbul block
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{7117117, ID{Hash: checksumToBytes(0x6727ef90), Next: 9812189}}, // First Muir Glacier block
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{9812188, ID{Hash: checksumToBytes(0x6727ef90), Next: 9812189}}, // Last Muir Glacier block
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{9812189, ID{Hash: checksumToBytes(0xa157d377), Next: 0}}, // First Berlin block
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{10000000, ID{Hash: checksumToBytes(0xa157d377), Next: 0}}, // Future Berlin block
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},
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},
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// Rinkeby test cases
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{
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params.RinkebyChainConfig,
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params.RinkebyGenesisHash,
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[]testcase{
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{0, ID{Hash: checksumToBytes(0x3b8e0691), Next: 1}}, // Unsynced, last Frontier block
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{1, ID{Hash: checksumToBytes(0x60949295), Next: 2}}, // First and last Homestead block
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{2, ID{Hash: checksumToBytes(0x8bde40dd), Next: 3}}, // First and last Tangerine block
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{3, ID{Hash: checksumToBytes(0xcb3a64bb), Next: 1035301}}, // First Spurious block
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{1035300, ID{Hash: checksumToBytes(0xcb3a64bb), Next: 1035301}}, // Last Spurious block
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{1035301, ID{Hash: checksumToBytes(0x8d748b57), Next: 3660663}}, // First Byzantium block
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{3660662, ID{Hash: checksumToBytes(0x8d748b57), Next: 3660663}}, // Last Byzantium block
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{3660663, ID{Hash: checksumToBytes(0xe49cab14), Next: 4321234}}, // First Constantinople block
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{4321233, ID{Hash: checksumToBytes(0xe49cab14), Next: 4321234}}, // Last Constantinople block
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{4321234, ID{Hash: checksumToBytes(0xafec6b27), Next: 5435345}}, // First Petersburg block
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{5435344, ID{Hash: checksumToBytes(0xafec6b27), Next: 5435345}}, // Last Petersburg block
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{5435345, ID{Hash: checksumToBytes(0xcbdb8838), Next: 8290928}}, // First Istanbul block
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{8290927, ID{Hash: checksumToBytes(0xcbdb8838), Next: 8290928}}, // Last Istanbul block
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{8290928, ID{Hash: checksumToBytes(0x6910c8bd), Next: 0}}, // First Berlin block
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{10000000, ID{Hash: checksumToBytes(0x6910c8bd), Next: 0}}, // Future Berlin block
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},
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},
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// Goerli test cases
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{
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params.GoerliChainConfig,
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params.GoerliGenesisHash,
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[]testcase{
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{0, ID{Hash: checksumToBytes(0xa3f5ab08), Next: 1561651}}, // Unsynced, last Frontier, Homestead, Tangerine, Spurious, Byzantium, Constantinople and first Petersburg block
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{1561650, ID{Hash: checksumToBytes(0xa3f5ab08), Next: 1561651}}, // Last Petersburg block
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{1561651, ID{Hash: checksumToBytes(0xc25efa5c), Next: 4460644}}, // First Istanbul block
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{4460643, ID{Hash: checksumToBytes(0xc25efa5c), Next: 4460644}}, // Last Istanbul block
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{4460644, ID{Hash: checksumToBytes(0x757a1c47), Next: 0}}, // First Berlin block
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{5000000, ID{Hash: checksumToBytes(0x757a1c47), Next: 0}}, // Future Berlin block
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},
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},
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}
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for i, tt := range tests {
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for j, ttt := range tt.cases {
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if have := NewID(tt.config, tt.genesis, ttt.head); have != ttt.want {
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t.Errorf("test %d, case %d: fork ID mismatch: have %x, want %x", i, j, have, ttt.want)
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}
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}
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}
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}
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// TestValidation tests that a local peer correctly validates and accepts a remote
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// fork ID.
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func TestValidation(t *testing.T) {
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tests := []struct {
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head uint64
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id ID
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err error
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}{
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// Local is mainnet Petersburg, remote announces the same. No future fork is announced.
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{7987396, ID{Hash: checksumToBytes(0x668db0af), Next: 0}, nil},
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// Local is mainnet Petersburg, remote announces the same. Remote also announces a next fork
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// at block 0xffffffff, but that is uncertain.
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{7987396, ID{Hash: checksumToBytes(0x668db0af), Next: math.MaxUint64}, nil},
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// Local is mainnet currently in Byzantium only (so it's aware of Petersburg), remote announces
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// also Byzantium, but it's not yet aware of Petersburg (e.g. non updated node before the fork).
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// In this case we don't know if Petersburg passed yet or not.
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{7279999, ID{Hash: checksumToBytes(0xa00bc324), Next: 0}, nil},
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// Local is mainnet currently in Byzantium only (so it's aware of Petersburg), remote announces
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// also Byzantium, and it's also aware of Petersburg (e.g. updated node before the fork). We
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// don't know if Petersburg passed yet (will pass) or not.
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{7279999, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}, nil},
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// Local is mainnet currently in Byzantium only (so it's aware of Petersburg), remote announces
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// also Byzantium, and it's also aware of some random fork (e.g. misconfigured Petersburg). As
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// neither forks passed at neither nodes, they may mismatch, but we still connect for now.
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{7279999, ID{Hash: checksumToBytes(0xa00bc324), Next: math.MaxUint64}, nil},
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// Local is mainnet exactly on Petersburg, remote announces Byzantium + knowledge about Petersburg. Remote
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// is simply out of sync, accept.
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{7280000, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}, nil},
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// Local is mainnet Petersburg, remote announces Byzantium + knowledge about Petersburg. Remote
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// is simply out of sync, accept.
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{7987396, ID{Hash: checksumToBytes(0xa00bc324), Next: 7280000}, nil},
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// Local is mainnet Petersburg, remote announces Spurious + knowledge about Byzantium. Remote
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// is definitely out of sync. It may or may not need the Petersburg update, we don't know yet.
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{7987396, ID{Hash: checksumToBytes(0x3edd5b10), Next: 4370000}, nil},
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// Local is mainnet Byzantium, remote announces Petersburg. Local is out of sync, accept.
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{7279999, ID{Hash: checksumToBytes(0x668db0af), Next: 0}, nil},
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// Local is mainnet Spurious, remote announces Byzantium, but is not aware of Petersburg. Local
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// out of sync. Local also knows about a future fork, but that is uncertain yet.
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{4369999, ID{Hash: checksumToBytes(0xa00bc324), Next: 0}, nil},
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// Local is mainnet Petersburg. remote announces Byzantium but is not aware of further forks.
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// Remote needs software update.
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{7987396, ID{Hash: checksumToBytes(0xa00bc324), Next: 0}, ErrRemoteStale},
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// Local is mainnet Petersburg, and isn't aware of more forks. Remote announces Petersburg +
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// 0xffffffff. Local needs software update, reject.
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{7987396, ID{Hash: checksumToBytes(0x5cddc0e1), Next: 0}, ErrLocalIncompatibleOrStale},
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// Local is mainnet Byzantium, and is aware of Petersburg. Remote announces Petersburg +
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// 0xffffffff. Local needs software update, reject.
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{7279999, ID{Hash: checksumToBytes(0x5cddc0e1), Next: 0}, ErrLocalIncompatibleOrStale},
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// Local is mainnet Petersburg, remote is Rinkeby Petersburg.
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{7987396, ID{Hash: checksumToBytes(0xafec6b27), Next: 0}, ErrLocalIncompatibleOrStale},
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// Local is mainnet Berlin, far in the future. Remote announces Gopherium (non existing fork)
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// at some future block 88888888, for itself, but past block for local. Local is incompatible.
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//
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// This case detects non-upgraded nodes with majority hash power (typical Ropsten mess).
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{88888888, ID{Hash: checksumToBytes(0x0eb440f6), Next: 88888888}, ErrLocalIncompatibleOrStale},
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// Local is mainnet Byzantium. Remote is also in Byzantium, but announces Gopherium (non existing
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// fork) at block 7279999, before Petersburg. Local is incompatible.
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{7279999, ID{Hash: checksumToBytes(0xa00bc324), Next: 7279999}, ErrLocalIncompatibleOrStale},
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}
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for i, tt := range tests {
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filter := newFilter(params.MainnetChainConfig, params.MainnetGenesisHash, func() uint64 { return tt.head })
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if err := filter(tt.id); err != tt.err {
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t.Errorf("test %d: validation error mismatch: have %v, want %v", i, err, tt.err)
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}
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}
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}
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// Tests that IDs are properly RLP encoded (specifically important because we
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// use uint32 to store the hash, but we need to encode it as [4]byte).
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func TestEncoding(t *testing.T) {
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tests := []struct {
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id ID
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want []byte
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}{
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{ID{Hash: checksumToBytes(0), Next: 0}, common.Hex2Bytes("c6840000000080")},
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{ID{Hash: checksumToBytes(0xdeadbeef), Next: 0xBADDCAFE}, common.Hex2Bytes("ca84deadbeef84baddcafe,")},
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{ID{Hash: checksumToBytes(math.MaxUint32), Next: math.MaxUint64}, common.Hex2Bytes("ce84ffffffff88ffffffffffffffff")},
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}
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for i, tt := range tests {
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have, err := rlp.EncodeToBytes(tt.id)
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if err != nil {
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t.Errorf("test %d: failed to encode forkid: %v", i, err)
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continue
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}
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if !bytes.Equal(have, tt.want) {
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t.Errorf("test %d: RLP mismatch: have %x, want %x", i, have, tt.want)
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}
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}
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}
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