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@ -1197,3 +1197,51 @@ func TestEIP161AccountRemoval(t *testing.T) { |
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t.Error("account should not exist") |
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} |
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} |
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// This is a regression test (i.e. as weird as it is, don't delete it ever), which
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// tests that under weird reorg conditions the blockchain and its internal header-
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// chain return the same latest block/header.
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//
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// https://github.com/ethereum/go-ethereum/pull/15941
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func TestBlockchainHeaderchainReorgConsistency(t *testing.T) { |
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// Generate a canonical chain to act as the main dataset
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engine := ethash.NewFaker() |
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db, _ := ethdb.NewMemDatabase() |
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genesis := new(Genesis).MustCommit(db) |
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blocks, _ := GenerateChain(params.TestChainConfig, genesis, engine, db, 64, func(i int, b *BlockGen) { b.SetCoinbase(common.Address{1}) }) |
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// Generate a bunch of fork blocks, each side forking from the canonical chain
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forks := make([]*types.Block, len(blocks)) |
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for i := 0; i < len(forks); i++ { |
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parent := genesis |
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if i > 0 { |
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parent = blocks[i-1] |
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} |
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fork, _ := GenerateChain(params.TestChainConfig, parent, engine, db, 1, func(i int, b *BlockGen) { b.SetCoinbase(common.Address{2}) }) |
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forks[i] = fork[0] |
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} |
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// Import the canonical and fork chain side by side, verifying the current block
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// and current header consistency
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diskdb, _ := ethdb.NewMemDatabase() |
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new(Genesis).MustCommit(diskdb) |
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chain, err := NewBlockChain(diskdb, params.TestChainConfig, engine, vm.Config{}) |
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if err != nil { |
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t.Fatalf("failed to create tester chain: %v", err) |
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} |
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for i := 0; i < len(blocks); i++ { |
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if _, err := chain.InsertChain(blocks[i : i+1]); err != nil { |
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t.Fatalf("block %d: failed to insert into chain: %v", i, err) |
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} |
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if chain.CurrentBlock().Hash() != chain.CurrentHeader().Hash() { |
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t.Errorf("block %d: current block/header mismatch: block #%d [%x…], header #%d [%x…]", i, chain.CurrentBlock().Number(), chain.CurrentBlock().Hash().Bytes()[:4], chain.CurrentHeader().Number, chain.CurrentHeader().Hash().Bytes()[:4]) |
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} |
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if _, err := chain.InsertChain(forks[i : i+1]); err != nil { |
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t.Fatalf(" fork %d: failed to insert into chain: %v", i, err) |
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} |
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if chain.CurrentBlock().Hash() != chain.CurrentHeader().Hash() { |
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t.Errorf(" fork %d: current block/header mismatch: block #%d [%x…], header #%d [%x…]", i, chain.CurrentBlock().Number(), chain.CurrentBlock().Hash().Bytes()[:4], chain.CurrentHeader().Number, chain.CurrentHeader().Hash().Bytes()[:4]) |
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} |
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} |
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} |
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