github.com/cryptotooltop/go-ethereum@v0.0.0-20231103184714-151d1922f3e5/core/vm/logger_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 vm
    18  
    19  import (
    20  	"math/big"
    21  	"testing"
    22  
    23  	"github.com/holiman/uint256"
    24  
    25  	"github.com/scroll-tech/go-ethereum/common"
    26  	"github.com/scroll-tech/go-ethereum/core/rawdb"
    27  	"github.com/scroll-tech/go-ethereum/core/state"
    28  	"github.com/scroll-tech/go-ethereum/params"
    29  )
    30  
    31  type dummyContractRef struct {
    32  	calledForEach bool
    33  }
    34  
    35  func (dummyContractRef) Address() common.Address     { return common.Address{} }
    36  func (dummyContractRef) Value() *big.Int             { return new(big.Int) }
    37  func (dummyContractRef) SetCode(common.Hash, []byte) {}
    38  func (d *dummyContractRef) ForEachStorage(callback func(key, value common.Hash) bool) {
    39  	d.calledForEach = true
    40  }
    41  func (d *dummyContractRef) SubBalance(amount *big.Int) {}
    42  func (d *dummyContractRef) AddBalance(amount *big.Int) {}
    43  func (d *dummyContractRef) SetBalance(*big.Int)        {}
    44  func (d *dummyContractRef) SetNonce(uint64)            {}
    45  func (d *dummyContractRef) Balance() *big.Int          { return new(big.Int) }
    46  
    47  // makeTestState create a sample test state to test node-wise reconstruction.
    48  func makeTestState() *state.StateDB {
    49  	// Create an empty state
    50  	db := state.NewDatabase(rawdb.NewMemoryDatabase())
    51  	stateDb, _ := state.New(common.Hash{}, db, nil)
    52  	return stateDb
    53  }
    54  
    55  type dummyStatedb struct {
    56  	state.StateDB
    57  }
    58  
    59  func (*dummyStatedb) GetRefund() uint64 { return 1337 }
    60  
    61  func TestStoreCapture(t *testing.T) {
    62  	var (
    63  		env      = NewEVM(BlockContext{}, TxContext{}, makeTestState(), params.TestChainConfig, Config{})
    64  		logger   = NewStructLogger(nil)
    65  		contract = NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 0)
    66  		scope    = &ScopeContext{
    67  			Memory:   NewMemory(),
    68  			Stack:    newstack(),
    69  			Contract: contract,
    70  		}
    71  	)
    72  	scope.Stack.push(uint256.NewInt(1))
    73  	scope.Stack.push(new(uint256.Int))
    74  	var index common.Hash
    75  	logger.CaptureStart(env, common.Address{}, contract.Address(), false, nil, 0, nil)
    76  	logger.CaptureState(0, SSTORE, 0, 0, scope, nil, 0, nil)
    77  	if len(logger.storage[contract.Address()]) == 0 {
    78  		t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(),
    79  			len(logger.storage[contract.Address()]))
    80  	}
    81  	exp := common.BigToHash(big.NewInt(1))
    82  	if logger.storage[contract.Address()][index] != exp {
    83  		t.Errorf("expected %x, got %x", exp, logger.storage[contract.Address()][index])
    84  	}
    85  }