// Copyright 2017 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"
"reflect"
"testing"
"github.com/davecgh/go-spew/spew"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/ethdb"
"github.com/ethereum/go-ethereum/params"
)
func TestDefaultGenesisBlock(t *testing.T) {
block := DefaultGenesisBlock().ToBlock(nil)
if block.Hash() != params.MainnetGenesisHash {
t.Errorf("wrong mainnet genesis hash, got %v, want %v", block.Hash(), params.MainnetGenesisHash)
}
block = DefaultTestnetGenesisBlock().ToBlock(nil)
if block.Hash() != params.TestnetGenesisHash {
t.Errorf("wrong testnet genesis hash, got %v, want %v", block.Hash(), params.TestnetGenesisHash)
}
}
func TestSetupGenesis(t *testing.T) {
var (
customghash = common.HexToHash("0x89c99d90b79719238d2645c7642f2c9295246e80775b38cfd162b696817fbd50")
customg = Genesis{
Config: ¶ms.ChainConfig{HomesteadBlock: big.NewInt(3)},
Alloc: GenesisAlloc{
{1}: {Balance: big.NewInt(1), Storage: map[common.Hash]common.Hash{{1}: {1}}},
},
}
oldcustomg = customg
)
oldcustomg.Config = ¶ms.ChainConfig{HomesteadBlock: big.NewInt(2)}
tests := []struct {
name string
fn func(ethdb.Database) (*params.ChainConfig, common.Hash, error)
wantConfig *params.ChainConfig
wantHash common.Hash
wantErr error
}{
{
name: "genesis without ChainConfig",
fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) {
return SetupGenesisBlock(db, new(Genesis))
},
wantErr: errGenesisNoConfig,
wantConfig: params.AllEthashProtocolChanges,
},
{
name: "no block in DB, genesis == nil",
fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) {
return SetupGenesisBlock(db, nil)
},
wantHash: params.MainnetGenesisHash,
wantConfig: params.MainnetChainConfig,
},
{
name: "mainnet block in DB, genesis == nil",
fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) {
DefaultGenesisBlock().MustCommit(db)
return SetupGenesisBlock(db, nil)
},
wantHash: params.MainnetGenesisHash,
wantConfig: params.MainnetChainConfig,
},
{
name: "custom block in DB, genesis == nil",
fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) {
customg.MustCommit(db)
return SetupGenesisBlock(db, nil)
},
wantHash: customghash,
wantConfig: customg.Config,
},
{
name: "custom block in DB, genesis == testnet",
fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) {
customg.MustCommit(db)
return SetupGenesisBlock(db, DefaultTestnetGenesisBlock())
},
wantErr: &GenesisMismatchError{Stored: customghash, New: params.TestnetGenesisHash},
wantHash: params.TestnetGenesisHash,
wantConfig: params.TestnetChainConfig,
},
{
name: "compatible config in DB",
fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) {
oldcustomg.MustCommit(db)
return SetupGenesisBlock(db, &customg)
},
wantHash: customghash,
wantConfig: customg.Config,
},
{
name: "incompatible config in DB",
fn: func(db ethdb.Database) (*params.ChainConfig, common.Hash, error) {
// Commit the 'old' genesis block with Homestead transition at #2.
// Advance to block #4, past the homestead transition block of customg.
genesis := oldcustomg.MustCommit(db)
bc, _ := NewBlockChain(db, nil, oldcustomg.Config, ethash.NewFullFaker(), vm.Config{}, nil)
defer bc.Stop()
blocks, _ := GenerateChain(oldcustomg.Config, genesis, ethash.NewFaker(), db, 4, nil)
bc.InsertChain(blocks)
bc.CurrentBlock()
// This should return a compatibility error.
return SetupGenesisBlock(db, &customg)
},
wantHash: customghash,
wantConfig: customg.Config,
wantErr: ¶ms.ConfigCompatError{
What: "Homestead fork block",
StoredConfig: big.NewInt(2),
NewConfig: big.NewInt(3),
RewindTo: 1,
},
},
}
for _, test := range tests {
db := ethdb.NewMemDatabase()
config, hash, err := test.fn(db)
// Check the return values.
if !reflect.DeepEqual(err, test.wantErr) {
spew := spew.ConfigState{DisablePointerAddresses: true, DisableCapacities: true}
t.Errorf("%s: returned error %#v, want %#v", test.name, spew.NewFormatter(err), spew.NewFormatter(test.wantErr))
}
if !reflect.DeepEqual(config, test.wantConfig) {
t.Errorf("%s:\nreturned %v\nwant %v", test.name, config, test.wantConfig)
}
if hash != test.wantHash {
t.Errorf("%s: returned hash %s, want %s", test.name, hash.Hex(), test.wantHash.Hex())
} else if err == nil {
// Check database content.
stored := rawdb.ReadBlock(db, test.wantHash, 0)
if stored.Hash() != test.wantHash {
t.Errorf("%s: block in DB has hash %s, want %s", test.name, stored.Hash(), test.wantHash)
}
}
}
}
