erigon-pulse/core/dao_test.go
Felix Lange 37dd9086ec core: refactor genesis handling
This commit solves several issues concerning the genesis block:

* Genesis/ChainConfig loading was handled by cmd/geth code. This left
  library users in the cold. They could specify a JSON-encoded
  string and overwrite the config, but didn't get any of the additional
  checks performed by geth.
* Decoding and writing of genesis JSON was conflated in
  WriteGenesisBlock. This made it a lot harder to embed the genesis
  block into the forthcoming config file loader. This commit changes
  things so there is a single Genesis type that represents genesis
  blocks. All uses of Write*Genesis* are changed to use the new type
  instead.
* If the chain config supplied by the user was incompatible with the
  current chain (i.e. the chain had already advanced beyond a scheduled
  fork), it got overwritten. This is not an issue in practice because
  previous forks have always had the highest total difficulty. It might
  matter in the future though. The new code reverts the local chain to
  the point of the fork when upgrading configuration.

The change to genesis block data removes compression library
dependencies from package core.
2017-03-23 15:58:43 +01:00

136 lines
6.1 KiB
Go

// Copyright 2016 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 core
import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/event"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/pow"
)
// Tests that DAO-fork enabled clients can properly filter out fork-commencing
// blocks based on their extradata fields.
func TestDAOForkRangeExtradata(t *testing.T) {
forkBlock := big.NewInt(32)
// Generate a common prefix for both pro-forkers and non-forkers
db, _ := ethdb.NewMemDatabase()
gspec := new(Genesis)
genesis := gspec.MustCommit(db)
prefix, _ := GenerateChain(params.TestChainConfig, genesis, db, int(forkBlock.Int64()-1), func(i int, gen *BlockGen) {})
// Create the concurrent, conflicting two nodes
proDb, _ := ethdb.NewMemDatabase()
gspec.MustCommit(proDb)
proConf := &params.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: true}
proBc, _ := NewBlockChain(proDb, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{})
conDb, _ := ethdb.NewMemDatabase()
gspec.MustCommit(conDb)
conConf := &params.ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: false}
conBc, _ := NewBlockChain(conDb, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{})
if _, err := proBc.InsertChain(prefix); err != nil {
t.Fatalf("pro-fork: failed to import chain prefix: %v", err)
}
if _, err := conBc.InsertChain(prefix); err != nil {
t.Fatalf("con-fork: failed to import chain prefix: %v", err)
}
// Try to expand both pro-fork and non-fork chains iteratively with other camp's blocks
for i := int64(0); i < params.DAOForkExtraRange.Int64(); i++ {
// Create a pro-fork block, and try to feed into the no-fork chain
db, _ = ethdb.NewMemDatabase()
gspec.MustCommit(db)
bc, _ := NewBlockChain(db, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{})
blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1))
for j := 0; j < len(blocks)/2; j++ {
blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
}
if _, err := bc.InsertChain(blocks); err != nil {
t.Fatalf("failed to import contra-fork chain for expansion: %v", err)
}
blocks, _ = GenerateChain(proConf, conBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {})
if _, err := conBc.InsertChain(blocks); err == nil {
t.Fatalf("contra-fork chain accepted pro-fork block: %v", blocks[0])
}
// Create a proper no-fork block for the contra-forker
blocks, _ = GenerateChain(conConf, conBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {})
if _, err := conBc.InsertChain(blocks); err != nil {
t.Fatalf("contra-fork chain didn't accepted no-fork block: %v", err)
}
// Create a no-fork block, and try to feed into the pro-fork chain
db, _ = ethdb.NewMemDatabase()
gspec.MustCommit(db)
bc, _ = NewBlockChain(db, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{})
blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1))
for j := 0; j < len(blocks)/2; j++ {
blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
}
if _, err := bc.InsertChain(blocks); err != nil {
t.Fatalf("failed to import pro-fork chain for expansion: %v", err)
}
blocks, _ = GenerateChain(conConf, proBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {})
if _, err := proBc.InsertChain(blocks); err == nil {
t.Fatalf("pro-fork chain accepted contra-fork block: %v", blocks[0])
}
// Create a proper pro-fork block for the pro-forker
blocks, _ = GenerateChain(proConf, proBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {})
if _, err := proBc.InsertChain(blocks); err != nil {
t.Fatalf("pro-fork chain didn't accepted pro-fork block: %v", err)
}
}
// Verify that contra-forkers accept pro-fork extra-datas after forking finishes
db, _ = ethdb.NewMemDatabase()
gspec.MustCommit(db)
bc, _ := NewBlockChain(db, conConf, new(pow.FakePow), new(event.TypeMux), vm.Config{})
blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1))
for j := 0; j < len(blocks)/2; j++ {
blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
}
if _, err := bc.InsertChain(blocks); err != nil {
t.Fatalf("failed to import contra-fork chain for expansion: %v", err)
}
blocks, _ = GenerateChain(proConf, conBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {})
if _, err := conBc.InsertChain(blocks); err != nil {
t.Fatalf("contra-fork chain didn't accept pro-fork block post-fork: %v", err)
}
// Verify that pro-forkers accept contra-fork extra-datas after forking finishes
db, _ = ethdb.NewMemDatabase()
gspec.MustCommit(db)
bc, _ = NewBlockChain(db, proConf, new(pow.FakePow), new(event.TypeMux), vm.Config{})
blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1))
for j := 0; j < len(blocks)/2; j++ {
blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
}
if _, err := bc.InsertChain(blocks); err != nil {
t.Fatalf("failed to import pro-fork chain for expansion: %v", err)
}
blocks, _ = GenerateChain(conConf, proBc.CurrentBlock(), db, 1, func(i int, gen *BlockGen) {})
if _, err := proBc.InsertChain(blocks); err != nil {
t.Fatalf("pro-fork chain didn't accept contra-fork block post-fork: %v", err)
}
}