github.com/LampardNguyen234/go-ethereum@v1.10.16-0.20220117140830-b6a3b0260724/eth/tracers/logger/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 logger
    18  
    19  import (
    20  	"math/big"
    21  	"testing"
    22  
    23  	"github.com/LampardNguyen234/go-ethereum/common"
    24  	"github.com/LampardNguyen234/go-ethereum/core/state"
    25  	"github.com/LampardNguyen234/go-ethereum/core/vm"
    26  	"github.com/LampardNguyen234/go-ethereum/params"
    27  )
    28  
    29  type dummyContractRef struct {
    30  	calledForEach bool
    31  }
    32  
    33  func (dummyContractRef) Address() common.Address     { return common.Address{} }
    34  func (dummyContractRef) Value() *big.Int             { return new(big.Int) }
    35  func (dummyContractRef) SetCode(common.Hash, []byte) {}
    36  func (d *dummyContractRef) ForEachStorage(callback func(key, value common.Hash) bool) {
    37  	d.calledForEach = true
    38  }
    39  func (d *dummyContractRef) SubBalance(amount *big.Int) {}
    40  func (d *dummyContractRef) AddBalance(amount *big.Int) {}
    41  func (d *dummyContractRef) SetBalance(*big.Int)        {}
    42  func (d *dummyContractRef) SetNonce(uint64)            {}
    43  func (d *dummyContractRef) Balance() *big.Int          { return new(big.Int) }
    44  
    45  type dummyStatedb struct {
    46  	state.StateDB
    47  }
    48  
    49  func (*dummyStatedb) GetRefund() uint64                                       { return 1337 }
    50  func (*dummyStatedb) GetState(_ common.Address, _ common.Hash) common.Hash    { return common.Hash{} }
    51  func (*dummyStatedb) SetState(_ common.Address, _ common.Hash, _ common.Hash) {}
    52  
    53  func TestStoreCapture(t *testing.T) {
    54  	var (
    55  		logger   = NewStructLogger(nil)
    56  		env      = vm.NewEVM(vm.BlockContext{}, vm.TxContext{}, &dummyStatedb{}, params.TestChainConfig, vm.Config{Debug: true, Tracer: logger})
    57  		contract = vm.NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 100000)
    58  	)
    59  	contract.Code = []byte{byte(vm.PUSH1), 0x1, byte(vm.PUSH1), 0x0, byte(vm.SSTORE)}
    60  	var index common.Hash
    61  	logger.CaptureStart(env, common.Address{}, contract.Address(), false, nil, 0, nil)
    62  	_, err := env.Interpreter().Run(contract, []byte{}, false)
    63  	if err != nil {
    64  		t.Fatal(err)
    65  	}
    66  	if len(logger.storage[contract.Address()]) == 0 {
    67  		t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(),
    68  			len(logger.storage[contract.Address()]))
    69  	}
    70  	exp := common.BigToHash(big.NewInt(1))
    71  	if logger.storage[contract.Address()][index] != exp {
    72  		t.Errorf("expected %x, got %x", exp, logger.storage[contract.Address()][index])
    73  	}
    74  }