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zeekayandHanzo Dev
8fc2c4fa45
Protects the golden root 0x549b8955...c021 from Go-side drift; paired with luxcpp/cevm/test/state_root_parity.cpp which asserts the C++ side. Silent divergence between the two EVMs is a chain-fork risk. Co-authored-by: Hanzo Dev <[email protected]>
36 lines
1.5 KiB
Go
36 lines
1.5 KiB
Go
// TestCevmMPTParity anchors the cross-engine state-root parity: luxfi/geth's
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// StateDB must produce the same root that cevm's C++ StateDB::commit() asserts
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// against in luxcpp/cevm/test/state_root_parity.cpp. If this golden changes,
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// update it in lockstep on both sides — a silent drift is a chain-fork risk.
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package state
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import (
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"math/big"
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"testing"
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"github.com/luxfi/geth/common"
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"github.com/luxfi/geth/core/rawdb"
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"github.com/luxfi/geth/core/tracing"
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"github.com/luxfi/geth/core/types"
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"github.com/luxfi/geth/triedb"
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"github.com/holiman/uint256"
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)
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func TestCevmMPTParity(t *testing.T) {
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const golden = "0x549b895566f2d74e35e415bca2997f06c94d8f454dc55ac19cf009a8a247c021"
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sdb, err := New(types.EmptyRootHash, NewDatabase(triedb.NewDatabase(rawdb.NewMemoryDatabase(), nil), nil))
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if err != nil {
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t.Fatal(err)
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}
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a := func(x byte) common.Address { var v common.Address; v[19] = x; return v }
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sdb.SetBalance(a(1), uint256.NewInt(1000), tracing.BalanceChangeUnspecified)
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sdb.SetNonce(a(1), 1, tracing.NonceChangeUnspecified)
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sdb.SetBalance(a(2), uint256.NewInt(2000), tracing.BalanceChangeUnspecified)
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sdb.SetNonce(a(2), 5, tracing.NonceChangeUnspecified)
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sdb.SetState(a(2), common.BigToHash(big.NewInt(3)), common.BigToHash(big.NewInt(0x99)))
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sdb.SetCode(a(3), []byte{0x60, 0x01, 0x60, 0x02}, tracing.CodeChangeUnspecified)
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if got := sdb.IntermediateRoot(false).Hex(); got != golden {
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t.Fatalf("state root drift: got %s want %s (cevm C++ parity test will now diverge)", got, golden)
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}
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}
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