Official Go implementation of the Ethereum protocol
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go-ethereum/eth/tracers/tracers_test.go

152 lines
4.8 KiB

// Copyright 2017 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 tracers
import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth/tracers/logger"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/tests"
)
func BenchmarkTransactionTrace(b *testing.B) {
key, _ := crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
from := crypto.PubkeyToAddress(key.PublicKey)
gas := uint64(1000000) // 1M gas
to := common.HexToAddress("0x00000000000000000000000000000000deadbeef")
signer := types.LatestSignerForChainID(big.NewInt(1337))
tx, err := types.SignNewTx(key, signer,
&types.LegacyTx{
Nonce: 1,
GasPrice: big.NewInt(500),
Gas: gas,
To: &to,
})
if err != nil {
b.Fatal(err)
}
txContext := vm.TxContext{
Origin: from,
GasPrice: tx.GasPrice(),
}
context := vm.BlockContext{
CanTransfer: core.CanTransfer,
Transfer: core.Transfer,
Coinbase: common.Address{},
BlockNumber: new(big.Int).SetUint64(uint64(5)),
Time: 5,
Difficulty: big.NewInt(0xffffffff),
GasLimit: gas,
BaseFee: big.NewInt(8),
}
alloc := core.GenesisAlloc{}
// The code pushes 'deadbeef' into memory, then the other params, and calls CREATE2, then returns
// the address
loop := []byte{
byte(vm.JUMPDEST), // [ count ]
byte(vm.PUSH1), 0, // jumpdestination
byte(vm.JUMP),
}
alloc[common.HexToAddress("0x00000000000000000000000000000000deadbeef")] = core.GenesisAccount{
Nonce: 1,
Code: loop,
Balance: big.NewInt(1),
}
alloc[from] = core.GenesisAccount{
Nonce: 1,
Code: []byte{},
Balance: big.NewInt(500000000000000),
}
triedb, _, statedb := tests.MakePreState(rawdb.NewMemoryDatabase(), alloc, false, rawdb.HashScheme)
defer triedb.Close()
// Create the tracer, the EVM environment and run it
tracer := logger.NewStructLogger(&logger.Config{
Debug: false,
//DisableStorage: true,
//EnableMemory: false,
//EnableReturnData: false,
})
evm := vm.NewEVM(context, txContext, statedb, params.AllEthashProtocolChanges, vm.Config{Tracer: tracer})
msg, err := core.TransactionToMessage(tx, signer, context.BaseFee)
if err != nil {
b.Fatalf("failed to prepare transaction for tracing: %v", err)
}
b.ResetTimer()
b.ReportAllocs()
for i := 0; i < b.N; i++ {
snap := statedb.Snapshot()
st := core.NewStateTransition(evm, msg, new(core.GasPool).AddGas(tx.Gas()))
_, err = st.TransitionDb()
if err != nil {
b.Fatal(err)
}
statedb.RevertToSnapshot(snap)
if have, want := len(tracer.StructLogs()), 244752; have != want {
b.Fatalf("trace wrong, want %d steps, have %d", want, have)
}
tracer.Reset()
}
}
func TestMemCopying(t *testing.T) {
for i, tc := range []struct {
memsize int64
offset int64
size int64
wantErr string
wantSize int
}{
{0, 0, 100, "", 100}, // Should pad up to 100
{0, 100, 0, "", 0}, // No need to pad (0 size)
{100, 50, 100, "", 100}, // Should pad 100-150
{100, 50, 5, "", 5}, // Wanted range fully within memory
{100, -50, 0, "offset or size must not be negative", 0}, // Errror
{0, 1, 1024*1024 + 1, "reached limit for padding memory slice: 1048578", 0}, // Errror
{10, 0, 1024*1024 + 100, "reached limit for padding memory slice: 1048666", 0}, // Errror
} {
mem := vm.NewMemory()
mem.Resize(uint64(tc.memsize))
cpy, err := GetMemoryCopyPadded(mem, tc.offset, tc.size)
if want := tc.wantErr; want != "" {
if err == nil {
t.Fatalf("test %d: want '%v' have no error", i, want)
}
if have := err.Error(); want != have {
t.Fatalf("test %d: want '%v' have '%v'", i, want, have)
}
continue
}
if err != nil {
t.Fatalf("test %d: unexpected error: %v", i, err)
}
if want, have := tc.wantSize, len(cpy); have != want {
t.Fatalf("test %d: want %v have %v", i, want, have)
}
}
}