path: root/tests/state_test_util.go

package tests

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

    "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/vm"
    "github.com/ethereum/go-ethereum/crypto"
    "github.com/ethereum/go-ethereum/ethdb"
    "github.com/ethereum/go-ethereum/logger/glog"
)

func RunStateTest(p string) error {
    skipTest := make(map[string]bool, len(stateSkipTests))
    for _, name := range stateSkipTests {
        skipTest[name] = true
    }

    tests := make(map[string]VmTest)
    readTestFile(p, &tests)

    for name, test := range tests {
        if skipTest[name] {
            glog.Infoln("Skipping state test", name)
            return nil
        }
        db, _ := ethdb.NewMemDatabase()
        statedb := state.New(common.Hash{}, db)
        for addr, account := range test.Pre {
            obj := StateObjectFromAccount(db, addr, account)
            statedb.SetStateObject(obj)
            for a, v := range account.Storage {
                obj.SetState(common.HexToHash(a), common.HexToHash(s))
            }
        }

        // XXX Yeah, yeah...
        env := make(map[string]string)
        env["currentCoinbase"] = test.Env.CurrentCoinbase
        env["currentDifficulty"] = test.Env.CurrentDifficulty
        env["currentGasLimit"] = test.Env.CurrentGasLimit
        env["currentNumber"] = test.Env.CurrentNumber
        env["previousHash"] = test.Env.PreviousHash
        if n, ok := test.Env.CurrentTimestamp.(float64); ok {
            env["currentTimestamp"] = strconv.Itoa(int(n))
        } else {
            env["currentTimestamp"] = test.Env.CurrentTimestamp.(string)
        }

        var (
            ret []byte
            // gas  *big.Int
            // err  error
            logs state.Logs
        )

        ret, logs, _, _ = RunState(statedb, env, test.Transaction)

        // // Compare expected  and actual return
        rexp := common.FromHex(test.Out)
        if bytes.Compare(rexp, ret) != 0 {
            return fmt.Errorf("%s's return failed. Expected %x, got %x\n", name, rexp, ret)
        }

        // check post state
        for addr, account := range test.Post {
            obj := statedb.GetStateObject(common.HexToAddress(addr))
            if obj == nil {
                continue
            }

            if obj.Balance().Cmp(common.Big(account.Balance)) != 0 {
                return fmt.Errorf("%s's : (%x) balance failed. Expected %v, got %v => %v\n", name, obj.Address().Bytes()[:4], account.Balance, obj.Balance(), new(big.Int).Sub(common.Big(account.Balance), obj.Balance()))
            }

            if obj.Nonce() != common.String2Big(account.Nonce).Uint64() {
                return fmt.Errorf("%s's : (%x) nonce failed. Expected %v, got %v\n", name, obj.Address().Bytes()[:4], account.Nonce, obj.Nonce())
            }

            for addr, value := range account.Storage {
                v := obj.GetState(common.HexToHash(addr)).Bytes()
                vexp := common.FromHex(value)

                if bytes.Compare(v, vexp) != 0 {
                    return fmt.Errorf("%s's : (%x: %s) storage failed. Expected %x, got %x (%v %v)\n", name, obj.Address().Bytes()[0:4], addr, vexp, v, common.BigD(vexp), common.BigD(v))
                }
            }
        }

        statedb.Sync()
        //if !bytes.Equal(common.Hex2Bytes(test.PostStateRoot), statedb.Root()) {
        if common.HexToHash(test.PostStateRoot) != statedb.Root() {
            return fmt.Errorf("%s's : Post state root error. Expected %s, got %x", name, test.PostStateRoot, statedb.Root())
        }

        // check logs
        if len(test.Logs) > 0 {
            lerr := checkLogs(test.Logs, logs)
            if lerr != nil {
                return fmt.Errorf("'%s' ", name, lerr.Error())
            }
        }

        glog.Infoln("State test passed: ", name)
        //fmt.Println(string(statedb.Dump()))
    }
    return nil
}

func RunState(statedb *state.StateDB, env, tx map[string]string) ([]byte, state.Logs, *big.Int, error) {
    var (
        keyPair, _ = crypto.NewKeyPairFromSec([]byte(common.Hex2Bytes(tx["secretKey"])))
        data       = common.FromHex(tx["data"])
        gas        = common.Big(tx["gasLimit"])
        price      = common.Big(tx["gasPrice"])
        value      = common.Big(tx["value"])
        nonce      = common.Big(tx["nonce"]).Uint64()
        caddr      = common.HexToAddress(env["currentCoinbase"])
    )

    var to *common.Address
    if len(tx["to"]) > 2 {
        t := common.HexToAddress(tx["to"])
        to = &t
    }
    // Set pre compiled contracts
    vm.Precompiled = vm.PrecompiledContracts()

    snapshot := statedb.Copy()
    coinbase := statedb.GetOrNewStateObject(caddr)
    coinbase.SetGasPool(common.Big(env["currentGasLimit"]))

    message := NewMessage(common.BytesToAddress(keyPair.Address()), to, data, value, gas, price, nonce)
    vmenv := NewEnvFromMap(statedb, env, tx)
    vmenv.origin = common.BytesToAddress(keyPair.Address())
    ret, _, err := core.ApplyMessage(vmenv, message, coinbase)
    if core.IsNonceErr(err) || core.IsInvalidTxErr(err) {
        statedb.Set(snapshot)
    }
    statedb.Update()

    return ret, vmenv.state.Logs(), vmenv.Gas, err
}