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// Copyright 2016 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"io/ioutil"
"math/big"
"os"
"path/filepath"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/params"
)
// Genesis block for nodes which don't care about the DAO fork (i.e. not configured)
var daoOldGenesis = `{
"alloc" : {},
"coinbase" : "0x0000000000000000000000000000000000000000",
"difficulty" : "0x20000",
"extraData" : "",
"gasLimit" : "0x2fefd8",
"nonce" : "0x0000000000000042",
"mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"timestamp" : "0x00",
"config" : {}
}`
// Genesis block for nodes which actively oppose the DAO fork
var daoNoForkGenesis = `{
"alloc" : {},
"coinbase" : "0x0000000000000000000000000000000000000000",
"difficulty" : "0x20000",
"extraData" : "",
"gasLimit" : "0x2fefd8",
"nonce" : "0x0000000000000042",
"mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"timestamp" : "0x00",
"config" : {
"daoForkBlock" : 314,
"daoForkSupport" : false
}
}`
// Genesis block for nodes which actively support the DAO fork
var daoProForkGenesis = `{
"alloc" : {},
"coinbase" : "0x0000000000000000000000000000000000000000",
"difficulty" : "0x20000",
"extraData" : "",
"gasLimit" : "0x2fefd8",
"nonce" : "0x0000000000000042",
"mixhash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"parentHash" : "0x0000000000000000000000000000000000000000000000000000000000000000",
"timestamp" : "0x00",
"config" : {
"daoForkBlock" : 314,
"daoForkSupport" : true
}
}`
var daoGenesisHash = common.HexToHash("5e1fc79cb4ffa4739177b5408045cd5d51c6cf766133f23f7cd72ee1f8d790e0")
var daoGenesisForkBlock = big.NewInt(314)
// TestDAOForkBlockNewChain tests that the DAO hard-fork number and the nodes support/opposition is correctly
// set in the database after various initialization procedures and invocations.
func TestDAOForkBlockNewChain(t *testing.T) {
for i, arg := range []struct {
genesis string
expectBlock *big.Int
expectVote bool
}{
// Test DAO Default Mainnet
{"", params.MainnetChainConfig.DAOForkBlock, true},
// test DAO Init Old Privnet
{daoOldGenesis, nil, false},
// test DAO Default No Fork Privnet
{daoNoForkGenesis, daoGenesisForkBlock, false},
// test DAO Default Pro Fork Privnet
{daoProForkGenesis, daoGenesisForkBlock, true},
} {
testDAOForkBlockNewChain(t, i, arg.genesis, arg.expectBlock, arg.expectVote)
}
}
func testDAOForkBlockNewChain(t *testing.T, test int, genesis string, expectBlock *big.Int, expectVote bool) {
// Create a temporary data directory to use and inspect later
datadir := tmpdir(t)
defer os.RemoveAll(datadir)
// Start a Geth instance with the requested flags set and immediately terminate
if genesis != "" {
json := filepath.Join(datadir, "genesis.json")
if err := ioutil.WriteFile(json, []byte(genesis), 0600); err != nil {
t.Fatalf("test %d: failed to write genesis file: %v", test, err)
}
runGeth(t, "--datadir", datadir, "init", json).WaitExit()
} else {
// Force chain initialization
args := []string{"--port", "0", "--maxpeers", "0", "--nodiscover", "--nat", "none", "--ipcdisable", "--datadir", datadir}
geth := runGeth(t, append(args, []string{"--exec", "2+2", "console"}...)...)
geth.WaitExit()
}
// Retrieve the DAO config flag from the database
path := filepath.Join(datadir, "geth", "chaindata")
db, err := ethdb.NewLDBDatabase(path, 0, 0)
if err != nil {
t.Fatalf("test %d: failed to open test database: %v", test, err)
}
defer db.Close()
genesisHash := common.HexToHash("0xd4e56740f876aef8c010b86a40d5f56745a118d0906a34e69aec8c0db1cb8fa3")
if genesis != "" {
genesisHash = daoGenesisHash
}
config := rawdb.ReadChainConfig(db, genesisHash)
if config == nil {
t.Errorf("test %d: failed to retrieve chain config: %v", test, err)
return // we want to return here, the other checks can't make it past this point (nil panic).
}
// Validate the DAO hard-fork block number against the expected value
if config.DAOForkBlock == nil {
if expectBlock != nil {
t.Errorf("test %d: dao hard-fork block mismatch: have nil, want %v", test, expectBlock)
}
} else if expectBlock == nil {
t.Errorf("test %d: dao hard-fork block mismatch: have %v, want nil", test, config.DAOForkBlock)
} else if config.DAOForkBlock.Cmp(expectBlock) != 0 {
t.Errorf("test %d: dao hard-fork block mismatch: have %v, want %v", test, config.DAOForkBlock, expectBlock)
}
if config.DAOForkSupport != expectVote {
t.Errorf("test %d: dao hard-fork support mismatch: have %v, want %v", test, config.DAOForkSupport, expectVote)
}
}
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