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