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-rw-r--r--core/dao_test.go132
1 files changed, 132 insertions, 0 deletions
diff --git a/core/dao_test.go b/core/dao_test.go
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+// 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/ethereum/go-ethereum/ethdb"
+ "github.com/ethereum/go-ethereum/event"
+ "github.com/ethereum/go-ethereum/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()
+ genesis := WriteGenesisBlockForTesting(db)
+ prefix, _ := GenerateChain(nil, genesis, db, int(forkBlock.Int64()-1), func(i int, gen *BlockGen) {})
+
+ // Create the concurrent, conflicting two nodes
+ proDb, _ := ethdb.NewMemDatabase()
+ WriteGenesisBlockForTesting(proDb)
+ proConf := &ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: true}
+ proBc, _ := NewBlockChain(proDb, proConf, new(FakePow), new(event.TypeMux))
+
+ conDb, _ := ethdb.NewMemDatabase()
+ WriteGenesisBlockForTesting(conDb)
+ conConf := &ChainConfig{HomesteadBlock: big.NewInt(0), DAOForkBlock: forkBlock, DAOForkSupport: false}
+ conBc, _ := NewBlockChain(conDb, conConf, new(FakePow), new(event.TypeMux))
+
+ 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()
+ WriteGenesisBlockForTesting(db)
+ bc, _ := NewBlockChain(db, conConf, new(FakePow), new(event.TypeMux))
+
+ blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1))
+ 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()
+ WriteGenesisBlockForTesting(db)
+ bc, _ = NewBlockChain(db, proConf, new(FakePow), new(event.TypeMux))
+
+ blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1))
+ 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()
+ WriteGenesisBlockForTesting(db)
+ bc, _ := NewBlockChain(db, conConf, new(FakePow), new(event.TypeMux))
+
+ blocks := conBc.GetBlocksFromHash(conBc.CurrentBlock().Hash(), int(conBc.CurrentBlock().NumberU64()+1))
+ 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()
+ WriteGenesisBlockForTesting(db)
+ bc, _ = NewBlockChain(db, proConf, new(FakePow), new(event.TypeMux))
+
+ blocks = proBc.GetBlocksFromHash(proBc.CurrentBlock().Hash(), int(proBc.CurrentBlock().NumberU64()+1))
+ 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)
+ }
+}