github.com/halybang/go-ethereum@v1.0.5-0.20180325041310-3b262bc1367c/core/dao_test.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/wanchain/go-wanchain/consensus/ethash"
//	"github.com/wanchain/go-wanchain/core/vm"
//	"github.com/wanchain/go-wanchain/ethdb"
//	"github.com/wanchain/go-wanchain/params"
//)
//
//// 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.TestChainConfig
//	//proConf.DAOForkBlock = forkBlock
//	//proConf.DAOForkSupport = true
//
//	proBc, _ := NewBlockChain(proDb, &proConf, ethash.NewFaker(), vm.Config{})
//	defer proBc.Stop()
//
//	conDb, _ := ethdb.NewMemDatabase()
//	gspec.MustCommit(conDb)
//
//	conConf := *params.TestChainConfig
//	//conConf.DAOForkBlock = forkBlock
//	//conConf.DAOForkSupport = false
//
//	conBc, _ := NewBlockChain(conDb, &conConf, ethash.NewFaker(), vm.Config{})
//	defer conBc.Stop()
//
//	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, ethash.NewFaker(), vm.Config{})
//		defer bc.Stop()
//
//		blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()))
//		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, ethash.NewFaker(), vm.Config{})
//		defer bc.Stop()
//
//		blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()))
//		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, ethash.NewFaker(), vm.Config{})
//	defer bc.Stop()
//
//	blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()))
//	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, ethash.NewFaker(), vm.Config{})
//	defer bc.Stop()
//
//	blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()))
//	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)
//	}
//}