github.com/ebakus/go-ebakus@v1.0.5-0.20200520105415-dbccef9ec421/core/vm/logger_test.go (about)

     1  // Copyright 2019 The ebakus/go-ebakus Authors
     2  // This file is part of the ebakus/go-ebakus library.
     3  //
     4  // The ebakus/go-ebakus 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 ebakus/go-ebakus 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 ebakus/go-ebakus 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/ebakus/go-ebakus/common"
    24  	"github.com/ebakus/go-ebakus/core/state"
    25  	"github.com/ebakus/go-ebakus/params"
    26  	"github.com/ebakus/ebakusdb"
    27  )
    28  
    29  type dummyContractRef struct {
    30  	calledForEach bool
    31  }
    32  
    33  func (dummyContractRef) ReturnGas(*big.Int)          {}
    34  func (dummyContractRef) Address() common.Address     { return common.Address{} }
    35  func (dummyContractRef) Value() *big.Int             { return new(big.Int) }
    36  func (dummyContractRef) SetCode(common.Hash, []byte) {}
    37  func (d *dummyContractRef) ForEachStorage(callback func(key, value common.Hash) bool) {
    38  	d.calledForEach = true
    39  }
    40  func (d *dummyContractRef) SubBalance(amount *big.Int) {}
    41  func (d *dummyContractRef) AddBalance(amount *big.Int) {}
    42  func (d *dummyContractRef) SetBalance(*big.Int)        {}
    43  func (d *dummyContractRef) SetNonce(uint64)            {}
    44  func (d *dummyContractRef) Balance() *big.Int          { return new(big.Int) }
    45  
    46  type dummyStatedb struct {
    47  	state.StateDB
    48  }
    49  
    50  func (*dummyStatedb) GetRefund() uint64 { return 1337 }
    51  
    52  func TestStoreCapture(t *testing.T) {
    53  	ebakusDb, _ := ebakusdb.OpenInMemory(nil)
    54  	ebakusSnapshot := ebakusDb.GetRootSnapshot()
    55  	defer ebakusSnapshot.Release()
    56  
    57  	var (
    58  		env      = NewEVM(Context{}, &dummyStatedb{}, ebakusSnapshot, params.TestChainConfig, Config{})
    59  		logger   = NewStructLogger(nil)
    60  		mem      = NewMemory()
    61  		stack    = newstack()
    62  		contract = NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 0)
    63  	)
    64  	stack.push(big.NewInt(1))
    65  	stack.push(big.NewInt(0))
    66  	var index common.Hash
    67  	logger.CaptureState(env, 0, SSTORE, 0, 0, mem, stack, contract, 0, nil)
    68  	if len(logger.changedValues[contract.Address()]) == 0 {
    69  		t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(), len(logger.changedValues[contract.Address()]))
    70  	}
    71  	exp := common.BigToHash(big.NewInt(1))
    72  	if logger.changedValues[contract.Address()][index] != exp {
    73  		t.Errorf("expected %x, got %x", exp, logger.changedValues[contract.Address()][index])
    74  	}
    75  }