github.com/yinchengtsinghua/golang-Eos-dpos-Ethereum@v0.0.0-20190121132951-92cc4225ed8e/core/vm/logger_test.go (about)

     1  
     2  //此源码被清华学神尹成大魔王专业翻译分析并修改
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     8  //https://mvp.microsoft.com/zh-cn/PublicProfile/4033620
     9  //版权所有2016 Go Ethereum作者
    10  //此文件是Go以太坊库的一部分。
    11  //
    12  //Go-Ethereum库是免费软件：您可以重新分发它和/或修改
    13  //根据GNU发布的较低通用公共许可证的条款
    14  //自由软件基金会，或者许可证的第3版，或者
    15  //（由您选择）任何更高版本。
    16  //
    17  //Go以太坊图书馆的发行目的是希望它会有用，
    18  //但没有任何保证；甚至没有
    19  //适销性或特定用途的适用性。见
    20  //GNU较低的通用公共许可证，了解更多详细信息。
    21  //
    22  //你应该收到一份GNU较低级别的公共许可证副本
    23  //以及Go以太坊图书馆。如果没有，请参见<http://www.gnu.org/licenses/>。
    24  
    25  package vm
    26  
    27  import (
    28  	"math/big"
    29  	"testing"
    30  
    31  	"github.com/ethereum/go-ethereum/common"
    32  	"github.com/ethereum/go-ethereum/params"
    33  )
    34  
    35  type dummyContractRef struct {
    36  	calledForEach bool
    37  }
    38  
    39  func (dummyContractRef) ReturnGas(*big.Int)          {}
    40  func (dummyContractRef) Address() common.Address     { return common.Address{} }
    41  func (dummyContractRef) Value() *big.Int             { return new(big.Int) }
    42  func (dummyContractRef) SetCode(common.Hash, []byte) {}
    43  func (d *dummyContractRef) ForEachStorage(callback func(key, value common.Hash) bool) {
    44  	d.calledForEach = true
    45  }
    46  func (d *dummyContractRef) SubBalance(amount *big.Int) {}
    47  func (d *dummyContractRef) AddBalance(amount *big.Int) {}
    48  func (d *dummyContractRef) SetBalance(*big.Int)        {}
    49  func (d *dummyContractRef) SetNonce(uint64)            {}
    50  func (d *dummyContractRef) Balance() *big.Int          { return new(big.Int) }
    51  
    52  type dummyStateDB struct {
    53  	NoopStateDB
    54  	ref *dummyContractRef
    55  }
    56  
    57  func TestStoreCapture(t *testing.T) {
    58  	var (
    59  		env      = NewEVM(Context{}, nil, params.TestChainConfig, Config{})
    60  		logger   = NewStructLogger(nil)
    61  		mem      = NewMemory()
    62  		stack    = newstack()
    63  		contract = NewContract(&dummyContractRef{}, &dummyContractRef{}, new(big.Int), 0)
    64  	)
    65  	stack.push(big.NewInt(1))
    66  	stack.push(big.NewInt(0))
    67  
    68  	var index common.Hash
    69  
    70  	logger.CaptureState(env, 0, SSTORE, 0, 0, mem, stack, contract, 0, nil)
    71  	if len(logger.changedValues[contract.Address()]) == 0 {
    72  		t.Fatalf("expected exactly 1 changed value on address %x, got %d", contract.Address(), len(logger.changedValues[contract.Address()]))
    73  	}
    74  	exp := common.BigToHash(big.NewInt(1))
    75  	if logger.changedValues[contract.Address()][index] != exp {
    76  		t.Errorf("expected %x, got %x", exp, logger.changedValues[contract.Address()][index])
    77  	}
    78  }