github.com/aquanetwork/aquachain@v1.7.8/core/vm/logger_test.go (about)

     1  // Copyright 2016 The aquachain Authors
     2  // This file is part of the aquachain library.
     3  //
     4  // The aquachain 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 aquachain 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 aquachain library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package vm
    18  
    19  import (
    20  	"math/big"
    21  	"testing"
    22  
    23  	"gitlab.com/aquachain/aquachain/common"
    24  	"gitlab.com/aquachain/aquachain/params"
    25  )
    26  
    27  type dummyContractRef struct {
    28  	calledForEach bool
    29  }
    30  
    31  func (dummyContractRef) ReturnGas(*big.Int)          {}
    32  func (dummyContractRef) Address() common.Address     { return common.Address{} }
    33  func (dummyContractRef) Value() *big.Int             { return new(big.Int) }
    34  func (dummyContractRef) SetCode(common.Hash, []byte) {}
    35  func (d *dummyContractRef) ForEachStorage(callback func(key, value common.Hash) bool) {
    36  	d.calledForEach = true
    37  }
    38  func (d *dummyContractRef) SubBalance(amount *big.Int) {}
    39  func (d *dummyContractRef) AddBalance(amount *big.Int) {}
    40  func (d *dummyContractRef) SetBalance(*big.Int)        {}
    41  func (d *dummyContractRef) SetNonce(uint64)            {}
    42  func (d *dummyContractRef) Balance() *big.Int          { return new(big.Int) }
    43  
    44  func TestStoreCapture(t *testing.T) {
    45  	var (
    46  		env      = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
    47  		logger   = NewStructLogger(nil)
    48  		mem      = NewMemory()
    49  		stack    = newstack()
    50  		contract = NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 0)
    51  	)
    52  	stack.push(big.NewInt(1))
    53  	stack.push(big.NewInt(0))
    54  
    55  	var index common.Hash
    56  
    57  	logger.CaptureState(env, 0, SSTORE, 0, 0, mem, stack, contract, 0, nil)
    58  	if len(logger.changedValues[contract.Address()]) == 0 {
    59  		t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(), len(logger.changedValues[contract.Address()]))
    60  	}
    61  	exp := common.BigToHash(big.NewInt(1))
    62  	if logger.changedValues[contract.Address()][index] != exp {
    63  		t.Errorf("expected %x, got %x", exp, logger.changedValues[contract.Address()][index])
    64  	}
    65  }