path: root/cmd/ethtest/main.go

/*
    This file is part of go-ethereum

    go-ethereum is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    go-ethereum is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/**
 * @authors:
 *  Jeffrey Wilcke <i@jev.io>
 */

package main

import (
    "bytes"
    "encoding/json"
    "io/ioutil"
    "log"
    "os"
    "strings"

    "github.com/ethereum/go-ethereum/ethdb"
    "github.com/ethereum/go-ethereum/ethutil"
    "github.com/ethereum/go-ethereum/state"
    "github.com/ethereum/go-ethereum/tests/helper"
)

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

func StateObjectFromAccount(db ethutil.Database, addr string, account Account) *state.StateObject {
    obj := state.NewStateObject(ethutil.Hex2Bytes(addr), db)
    obj.SetBalance(ethutil.Big(account.Balance))

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

    return obj
}

type VmTest struct {
    Callcreates interface{}
    Env         map[string]string
    Exec        map[string]string
    Gas         string
    Out         string
    Post        map[string]Account
    Pre         map[string]Account
}

func RunVmTest(js string) (failed int) {
    tests := make(map[string]VmTest)

    data, _ := ioutil.ReadAll(strings.NewReader(js))
    err := json.Unmarshal(data, &tests)
    if err != nil {
        log.Fatalln(err)
    }

    for name, test := range tests {
        db, _ := ethdb.NewMemDatabase()
        state := state.New(nil, db)
        for addr, account := range test.Pre {
            obj := StateObjectFromAccount(db, addr, account)
            state.SetStateObject(obj)
        }

        ret, _, gas, err := helper.RunVm(state, test.Env, test.Exec)
        // When an error is returned it doesn't always mean the tests fails.
        // Have to come up with some conditional failing mechanism.
        if err != nil {
            log.Println(err)
        }

        rexp := helper.FromHex(test.Out)
        if bytes.Compare(rexp, ret) != 0 {
            log.Printf("%s's return failed. Expected %x, got %x\n", name, rexp, ret)
            failed = 1
        }

        if len(test.Gas) == 0 && err == nil {
            log.Printf("0 gas indicates error but no error given by VM")
            failed = 1
        } else {
            gexp := ethutil.Big(test.Gas)
            if gexp.Cmp(gas) != 0 {
                log.Printf("%s's gas failed. Expected %v, got %v\n", name, gexp, gas)
                failed = 1
            }
        }

        for addr, account := range test.Post {
            obj := state.GetStateObject(helper.FromHex(addr))
            for addr, value := range account.Storage {
                v := obj.GetState(helper.FromHex(addr)).Bytes()
                vexp := helper.FromHex(value)

                if bytes.Compare(v, vexp) != 0 {
                    log.Printf("%s's : (%x: %s) storage failed. Expected %x, got %x (%v %v)\n", name, obj.Address()[0:4], addr, vexp, v, ethutil.BigD(vexp), ethutil.BigD(v))
                    failed = 1
                }
            }
        }
    }

    return
}

func main() {
    helper.Logger.SetLogLevel(5)
    if len(os.Args) == 1 {
        log.Fatalln("no json supplied")
    }

    os.Exit(RunVmTest(os.Args[1]))
}