aboutsummaryrefslogblamecommitdiffstats
path: root/tests/util.go
blob: 67650c1889ea8a4c4eb62f7e3e139e0603459451 (plain) (tree)





























































































































                                                                                                                                  
                           









                                        







                                                 


















































































































                                                                                                                               
package tests

import (
    "bytes"
    "errors"
    "fmt"
    "math/big"

    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/core"
    "github.com/ethereum/go-ethereum/core/state"
    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/core/vm"
    "github.com/ethereum/go-ethereum/crypto"
)

func checkLogs(tlog []Log, logs state.Logs) error {

    if len(tlog) != len(logs) {
        return fmt.Errorf("log length mismatch. Expected %d, got %d", len(tlog), len(logs))
    } else {
        for i, log := range tlog {
            if common.HexToAddress(log.AddressF) != logs[i].Address {
                return fmt.Errorf("log address expected %v got %x", log.AddressF, logs[i].Address)
            }

            if !bytes.Equal(logs[i].Data, common.FromHex(log.DataF)) {
                return fmt.Errorf("log data expected %v got %x", log.DataF, logs[i].Data)
            }

            if len(log.TopicsF) != len(logs[i].Topics) {
                return fmt.Errorf("log topics length expected %d got %d", len(log.TopicsF), logs[i].Topics)
            } else {
                for j, topic := range log.TopicsF {
                    if common.HexToHash(topic) != logs[i].Topics[j] {
                        return fmt.Errorf("log topic[%d] expected %v got %x", j, topic, logs[i].Topics[j])
                    }
                }
            }
            genBloom := common.LeftPadBytes(types.LogsBloom(state.Logs{logs[i]}).Bytes(), 256)

            if !bytes.Equal(genBloom, common.Hex2Bytes(log.BloomF)) {
                return fmt.Errorf("bloom mismatch")
            }
        }
    }
    return nil
}

type Account struct {
    Balance string
    Code    string
    Nonce   string
    Storage map[string]string
}

type Log struct {
    AddressF string   `json:"address"`
    DataF    string   `json:"data"`
    TopicsF  []string `json:"topics"`
    BloomF   string   `json:"bloom"`
}

func (self Log) Address() []byte      { return common.Hex2Bytes(self.AddressF) }
func (self Log) Data() []byte         { return common.Hex2Bytes(self.DataF) }
func (self Log) RlpData() interface{} { return nil }
func (self Log) Topics() [][]byte {
    t := make([][]byte, len(self.TopicsF))
    for i, topic := range self.TopicsF {
        t[i] = common.Hex2Bytes(topic)
    }
    return t
}

func StateObjectFromAccount(db common.Database, addr string, account Account) *state.StateObject {
    obj := state.NewStateObject(common.HexToAddress(addr), db)
    obj.SetBalance(common.Big(account.Balance))

    if common.IsHex(account.Code) {
        account.Code = account.Code[2:]
    }
    obj.SetCode(common.Hex2Bytes(account.Code))
    obj.SetNonce(common.Big(account.Nonce).Uint64())

    return obj
}

type VmEnv struct {
    CurrentCoinbase   string
    CurrentDifficulty string
    CurrentGasLimit   string
    CurrentNumber     string
    CurrentTimestamp  interface{}
    PreviousHash      string
}

type VmTest struct {
    Callcreates interface{}
    //Env         map[string]string
    Env           VmEnv
    Exec          map[string]string
    Transaction   map[string]string
    Logs          []Log
    Gas           string
    Out           string
    Post          map[string]Account
    Pre           map[string]Account
    PostStateRoot string
}

type Env struct {
    depth        int
    state        *state.StateDB
    skipTransfer bool
    initial      bool
    Gas          *big.Int

    origin common.Address
    //parent   common.Hash
    coinbase common.Address

    number     *big.Int
    time       int64
    difficulty *big.Int
    gasLimit   *big.Int

    logs []vm.StructLog

    vmTest bool
}

func NewEnv(state *state.StateDB) *Env {
    return &Env{
        state: state,
    }
}

func (self *Env) StructLogs() []vm.StructLog {
    return self.logs
}

func (self *Env) AddStructLog(log vm.StructLog) {
    self.logs = append(self.logs, log)
}

func NewEnvFromMap(state *state.StateDB, envValues map[string]string, exeValues map[string]string) *Env {
    env := NewEnv(state)

    env.origin = common.HexToAddress(exeValues["caller"])
    //env.parent = common.Hex2Bytes(envValues["previousHash"])
    env.coinbase = common.HexToAddress(envValues["currentCoinbase"])
    env.number = common.Big(envValues["currentNumber"])
    env.time = common.Big(envValues["currentTimestamp"]).Int64()
    env.difficulty = common.Big(envValues["currentDifficulty"])
    env.gasLimit = common.Big(envValues["currentGasLimit"])
    env.Gas = new(big.Int)

    return env
}

func (self *Env) Origin() common.Address { return self.origin }
func (self *Env) BlockNumber() *big.Int  { return self.number }

//func (self *Env) PrevHash() []byte      { return self.parent }
func (self *Env) Coinbase() common.Address { return self.coinbase }
func (self *Env) Time() int64              { return self.time }
func (self *Env) Difficulty() *big.Int     { return self.difficulty }
func (self *Env) State() *state.StateDB    { return self.state }
func (self *Env) GasLimit() *big.Int       { return self.gasLimit }
func (self *Env) VmType() vm.Type          { return vm.StdVmTy }
func (self *Env) GetHash(n uint64) common.Hash {
    return common.BytesToHash(crypto.Sha3([]byte(big.NewInt(int64(n)).String())))
}
func (self *Env) AddLog(log *state.Log) {
    self.state.AddLog(log)
}
func (self *Env) Depth() int     { return self.depth }
func (self *Env) SetDepth(i int) { self.depth = i }
func (self *Env) Transfer(from, to vm.Account, amount *big.Int) error {
    if self.skipTransfer {
        // ugly hack
        if self.initial {
            self.initial = false
            return nil
        }

        if from.Balance().Cmp(amount) < 0 {
            return errors.New("Insufficient balance in account")
        }

        return nil
    }
    return vm.Transfer(from, to, amount)
}

func (self *Env) vm(addr *common.Address, data []byte, gas, price, value *big.Int) *core.Execution {
    exec := core.NewExecution(self, addr, data, gas, price, value)

    return exec
}

func (self *Env) Call(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
    if self.vmTest && self.depth > 0 {
        caller.ReturnGas(gas, price)

        return nil, nil
    }
    exe := self.vm(&addr, data, gas, price, value)
    ret, err := exe.Call(addr, caller)
    self.Gas = exe.Gas

    return ret, err

}
func (self *Env) CallCode(caller vm.ContextRef, addr common.Address, data []byte, gas, price, value *big.Int) ([]byte, error) {
    if self.vmTest && self.depth > 0 {
        caller.ReturnGas(gas, price)

        return nil, nil
    }

    caddr := caller.Address()
    exe := self.vm(&caddr, data, gas, price, value)
    return exe.Call(addr, caller)
}

func (self *Env) Create(caller vm.ContextRef, data []byte, gas, price, value *big.Int) ([]byte, error, vm.ContextRef) {
    exe := self.vm(nil, data, gas, price, value)
    if self.vmTest {
        caller.ReturnGas(gas, price)

        nonce := self.state.GetNonce(caller.Address())
        obj := self.state.GetOrNewStateObject(crypto.CreateAddress(caller.Address(), nonce))

        return nil, nil, obj
    } else {
        return exe.Create(caller)
    }
}

type Message struct {
    from              common.Address
    to                *common.Address
    value, gas, price *big.Int
    data              []byte
    nonce             uint64
}

func NewMessage(from common.Address, to *common.Address, data []byte, value, gas, price *big.Int, nonce uint64) Message {
    return Message{from, to, value, gas, price, data, nonce}
}

func (self Message) Hash() []byte                  { return nil }
func (self Message) From() (common.Address, error) { return self.from, nil }
func (self Message) To() *common.Address           { return self.to }
func (self Message) GasPrice() *big.Int            { return self.price }
func (self Message) Gas() *big.Int                 { return self.gas }
func (self Message) Value() *big.Int               { return self.value }
func (self Message) Nonce() uint64                 { return self.nonce }
func (self Message) Data() []byte                  { return self.data }