github.com/sberex/go-sberex@v1.8.2-0.20181113200658-ed96ac38f7d7/core/vm/logger_test.go (about)

     1  // This file is part of the go-sberex library. The go-sberex library is 
     2  // free software: you can redistribute it and/or modify it under the terms 
     3  // of the GNU Lesser General Public License as published by the Free 
     4  // Software Foundation, either version 3 of the License, or (at your option)
     5  // any later version.
     6  //
     7  // The go-sberex library is distributed in the hope that it will be useful, 
     8  // but WITHOUT ANY WARRANTY; without even the implied warranty of
     9  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser 
    10  // General Public License <http://www.gnu.org/licenses/> for more details.
    11  
    12  package vm
    13  
    14  import (
    15  	"math/big"
    16  	"testing"
    17  
    18  	"github.com/Sberex/go-sberex/common"
    19  	"github.com/Sberex/go-sberex/params"
    20  )
    21  
    22  type dummyContractRef struct {
    23  	calledForEach bool
    24  }
    25  
    26  func (dummyContractRef) ReturnGas(*big.Int)          {}
    27  func (dummyContractRef) Address() common.Address     { return common.Address{} }
    28  func (dummyContractRef) Value() *big.Int             { return new(big.Int) }
    29  func (dummyContractRef) SetCode(common.Hash, []byte) {}
    30  func (d *dummyContractRef) ForEachStorage(callback func(key, value common.Hash) bool) {
    31  	d.calledForEach = true
    32  }
    33  func (d *dummyContractRef) SubBalance(amount *big.Int) {}
    34  func (d *dummyContractRef) AddBalance(amount *big.Int) {}
    35  func (d *dummyContractRef) SetBalance(*big.Int)        {}
    36  func (d *dummyContractRef) SetNonce(uint64)            {}
    37  func (d *dummyContractRef) Balance() *big.Int          { return new(big.Int) }
    38  
    39  type dummyStateDB struct {
    40  	NoopStateDB
    41  	ref *dummyContractRef
    42  }
    43  
    44  func TestStoreCapture(t *testing.T) {
    45  	var (
    46  		env      = NewEVM(Context{}, nil, params.TestChainConfig, Config{EnableJit: false, ForceJit: false})
    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  }