github.com/4000d/go-ethereum@v1.8.2-0.20180223170251-423c8bb1d821/core/dao_test.go (about)

     1  // Copyright 2016 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package core
    18  
    19  import (
    20  	"math/big"
    21  	"testing"
    22  
    23  	"github.com/ethereum/go-ethereum/consensus/ethash"
    24  	"github.com/ethereum/go-ethereum/core/vm"
    25  	"github.com/ethereum/go-ethereum/ethdb"
    26  	"github.com/ethereum/go-ethereum/params"
    27  )
    28  
    29  // Tests that DAO-fork enabled clients can properly filter out fork-commencing
    30  // blocks based on their extradata fields.
    31  func TestDAOForkRangeExtradata(t *testing.T) {
    32  	forkBlock := big.NewInt(32)
    33  
    34  	// Generate a common prefix for both pro-forkers and non-forkers
    35  	db, _ := ethdb.NewMemDatabase()
    36  	gspec := new(Genesis)
    37  	genesis := gspec.MustCommit(db)
    38  	prefix, _ := GenerateChain(params.TestChainConfig, genesis, ethash.NewFaker(), db, int(forkBlock.Int64()-1), func(i int, gen *BlockGen) {})
    39  
    40  	// Create the concurrent, conflicting two nodes
    41  	proDb, _ := ethdb.NewMemDatabase()
    42  	gspec.MustCommit(proDb)
    43  
    44  	proConf := *params.TestChainConfig
    45  	proConf.DAOForkBlock = forkBlock
    46  	proConf.DAOForkSupport = true
    47  
    48  	proBc, _ := NewBlockChain(proDb, nil, &proConf, ethash.NewFaker(), vm.Config{})
    49  	defer proBc.Stop()
    50  
    51  	conDb, _ := ethdb.NewMemDatabase()
    52  	gspec.MustCommit(conDb)
    53  
    54  	conConf := *params.TestChainConfig
    55  	conConf.DAOForkBlock = forkBlock
    56  	conConf.DAOForkSupport = false
    57  
    58  	conBc, _ := NewBlockChain(conDb, nil, &conConf, ethash.NewFaker(), vm.Config{})
    59  	defer conBc.Stop()
    60  
    61  	if _, err := proBc.InsertChain(prefix); err != nil {
    62  		t.Fatalf("pro-fork: failed to import chain prefix: %v", err)
    63  	}
    64  	if _, err := conBc.InsertChain(prefix); err != nil {
    65  		t.Fatalf("con-fork: failed to import chain prefix: %v", err)
    66  	}
    67  	// Try to expand both pro-fork and non-fork chains iteratively with other camp's blocks
    68  	for i := int64(0); i < params.DAOForkExtraRange.Int64(); i++ {
    69  		// Create a pro-fork block, and try to feed into the no-fork chain
    70  		db, _ = ethdb.NewMemDatabase()
    71  		gspec.MustCommit(db)
    72  		bc, _ := NewBlockChain(db, nil, &conConf, ethash.NewFaker(), vm.Config{})
    73  		defer bc.Stop()
    74  
    75  		blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()))
    76  		for j := 0; j < len(blocks)/2; j++ {
    77  			blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
    78  		}
    79  		if _, err := bc.InsertChain(blocks); err != nil {
    80  			t.Fatalf("failed to import contra-fork chain for expansion: %v", err)
    81  		}
    82  		if err := bc.stateCache.TrieDB().Commit(bc.CurrentHeader().Root, true); err != nil {
    83  			t.Fatalf("failed to commit contra-fork head for expansion: %v", err)
    84  		}
    85  		blocks, _ = GenerateChain(&proConf, conBc.CurrentBlock(), ethash.NewFaker(), db, 1, func(i int, gen *BlockGen) {})
    86  		if _, err := conBc.InsertChain(blocks); err == nil {
    87  			t.Fatalf("contra-fork chain accepted pro-fork block: %v", blocks[0])
    88  		}
    89  		// Create a proper no-fork block for the contra-forker
    90  		blocks, _ = GenerateChain(&conConf, conBc.CurrentBlock(), ethash.NewFaker(), db, 1, func(i int, gen *BlockGen) {})
    91  		if _, err := conBc.InsertChain(blocks); err != nil {
    92  			t.Fatalf("contra-fork chain didn't accepted no-fork block: %v", err)
    93  		}
    94  		// Create a no-fork block, and try to feed into the pro-fork chain
    95  		db, _ = ethdb.NewMemDatabase()
    96  		gspec.MustCommit(db)
    97  		bc, _ = NewBlockChain(db, nil, &proConf, ethash.NewFaker(), vm.Config{})
    98  		defer bc.Stop()
    99  
   100  		blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()))
   101  		for j := 0; j < len(blocks)/2; j++ {
   102  			blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
   103  		}
   104  		if _, err := bc.InsertChain(blocks); err != nil {
   105  			t.Fatalf("failed to import pro-fork chain for expansion: %v", err)
   106  		}
   107  		if err := bc.stateCache.TrieDB().Commit(bc.CurrentHeader().Root, true); err != nil {
   108  			t.Fatalf("failed to commit pro-fork head for expansion: %v", err)
   109  		}
   110  		blocks, _ = GenerateChain(&conConf, proBc.CurrentBlock(), ethash.NewFaker(), db, 1, func(i int, gen *BlockGen) {})
   111  		if _, err := proBc.InsertChain(blocks); err == nil {
   112  			t.Fatalf("pro-fork chain accepted contra-fork block: %v", blocks[0])
   113  		}
   114  		// Create a proper pro-fork block for the pro-forker
   115  		blocks, _ = GenerateChain(&proConf, proBc.CurrentBlock(), ethash.NewFaker(), db, 1, func(i int, gen *BlockGen) {})
   116  		if _, err := proBc.InsertChain(blocks); err != nil {
   117  			t.Fatalf("pro-fork chain didn't accepted pro-fork block: %v", err)
   118  		}
   119  	}
   120  	// Verify that contra-forkers accept pro-fork extra-datas after forking finishes
   121  	db, _ = ethdb.NewMemDatabase()
   122  	gspec.MustCommit(db)
   123  	bc, _ := NewBlockChain(db, nil, &conConf, ethash.NewFaker(), vm.Config{})
   124  	defer bc.Stop()
   125  
   126  	blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()))
   127  	for j := 0; j < len(blocks)/2; j++ {
   128  		blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
   129  	}
   130  	if _, err := bc.InsertChain(blocks); err != nil {
   131  		t.Fatalf("failed to import contra-fork chain for expansion: %v", err)
   132  	}
   133  	if err := bc.stateCache.TrieDB().Commit(bc.CurrentHeader().Root, true); err != nil {
   134  		t.Fatalf("failed to commit contra-fork head for expansion: %v", err)
   135  	}
   136  	blocks, _ = GenerateChain(&proConf, conBc.CurrentBlock(), ethash.NewFaker(), db, 1, func(i int, gen *BlockGen) {})
   137  	if _, err := conBc.InsertChain(blocks); err != nil {
   138  		t.Fatalf("contra-fork chain didn't accept pro-fork block post-fork: %v", err)
   139  	}
   140  	// Verify that pro-forkers accept contra-fork extra-datas after forking finishes
   141  	db, _ = ethdb.NewMemDatabase()
   142  	gspec.MustCommit(db)
   143  	bc, _ = NewBlockChain(db, nil, &proConf, ethash.NewFaker(), vm.Config{})
   144  	defer bc.Stop()
   145  
   146  	blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()))
   147  	for j := 0; j < len(blocks)/2; j++ {
   148  		blocks[j], blocks[len(blocks)-1-j] = blocks[len(blocks)-1-j], blocks[j]
   149  	}
   150  	if _, err := bc.InsertChain(blocks); err != nil {
   151  		t.Fatalf("failed to import pro-fork chain for expansion: %v", err)
   152  	}
   153  	if err := bc.stateCache.TrieDB().Commit(bc.CurrentHeader().Root, true); err != nil {
   154  		t.Fatalf("failed to commit pro-fork head for expansion: %v", err)
   155  	}
   156  	blocks, _ = GenerateChain(&conConf, proBc.CurrentBlock(), ethash.NewFaker(), db, 1, func(i int, gen *BlockGen) {})
   157  	if _, err := proBc.InsertChain(blocks); err != nil {
   158  		t.Fatalf("pro-fork chain didn't accept contra-fork block post-fork: %v", err)
   159  	}
   160  }