path: root/tests/vm/gh_test.go

package vm

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

    "github.com/ethereum/go-ethereum/chain/types"
    "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
}

type Log struct {
    Address string
    Data    string
    Topics  []string
}

func StateObjectFromAccount(addr string, account Account) *state.StateObject {
    obj := state.NewStateObject(ethutil.Hex2Bytes(addr))
    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 Env struct {
    CurrentCoinbase   string
    CurrentDifficulty string
    CurrentGasLimit   string
    CurrentNumber     string
    CurrentTimestamp  interface{}
    PreviousHash      string
}

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

func RunVmTest(p string, t *testing.T) {
    tests := make(map[string]VmTest)
    helper.CreateFileTests(t, p, &tests)

    for name, test := range tests {
        statedb := state.New(helper.NewTrie())
        for addr, account := range test.Pre {
            obj := StateObjectFromAccount(addr, account)
            statedb.SetStateObject(obj)
        }

        // 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
        )

        if len(test.Exec) > 0 {
            ret, logs, gas, err = helper.RunVm(statedb, env, test.Exec)
        } else {
            ret, logs, gas, err = helper.RunState(statedb, env, test.Transaction)
        }

        // 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 {
            helper.Log.Infoln(err)
        }

        rexp := helper.FromHex(test.Out)
        if bytes.Compare(rexp, ret) != 0 {
            t.Errorf("%s's return failed. Expected %x, got %x\n", name, rexp, ret)
        }

        if len(test.Gas) > 0 {
            gexp := ethutil.Big(test.Gas)
            if gexp.Cmp(gas) != 0 {
                t.Errorf("%s's gas failed. Expected %v, got %v\n", name, gexp, gas)
            }
        }

        for addr, account := range test.Post {
            obj := statedb.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 {
                    t.Errorf("%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))
                }
            }
        }

        if len(test.Logs) > 0 {
            genBloom := ethutil.LeftPadBytes(types.LogsBloom(logs).Bytes(), 64)
            // Logs within the test itself aren't correct, missing empty fields (32 0s)
            for bloom /*logs*/, _ := range test.Logs {
                if !bytes.Equal(genBloom, ethutil.Hex2Bytes(bloom)) {
                    t.Errorf("bloom mismatch")
                }
            }
        }
    }
}

// I've created a new function for each tests so it's easier to identify where the problem lies if any of them fail.
func TestVMArithmetic(t *testing.T) {
    const fn = "../files/vmtests/vmArithmeticTest.json"
    RunVmTest(fn, t)
}

func TestBitwiseLogicOperation(t *testing.T) {
    const fn = "../files/vmtests/vmBitwiseLogicOperationTest.json"
    RunVmTest(fn, t)
}

func TestBlockInfo(t *testing.T) {
    const fn = "../files/vmtests/vmBlockInfoTest.json"
    RunVmTest(fn, t)
}

func TestEnvironmentalInfo(t *testing.T) {
    const fn = "../files/vmtests/vmEnvironmentalInfoTest.json"
    RunVmTest(fn, t)
}

func TestFlowOperation(t *testing.T) {
    const fn = "../files/vmtests/vmIOandFlowOperationsTest.json"
    RunVmTest(fn, t)
}

func TestPushDupSwap(t *testing.T) {
    const fn = "../files/vmtests/vmPushDupSwapTest.json"
    RunVmTest(fn, t)
}

func TestVMSha3(t *testing.T) {
    const fn = "../files/vmtests/vmSha3Test.json"
    RunVmTest(fn, t)
}

func TestVm(t *testing.T) {
    const fn = "../files/vmtests/vmtests.json"
    RunVmTest(fn, t)
}

func TestVmLog(t *testing.T) {
    const fn = "../files/vmtests/vmLogTest.json"
    RunVmTest(fn, t)
}

func TestStateSystemOperations(t *testing.T) {
    const fn = "../files/StateTests/stSystemOperationsTest.json"
    RunVmTest(fn, t)
}

func TestStatePreCompiledContracts(t *testing.T) {
    const fn = "../files/StateTests/stPreCompiledContracts.json"
    RunVmTest(fn, t)
}

func TestStateRecursiveCreate(t *testing.T) {
    const fn = "../files/StateTests/stRecursiveCreate.json"
    RunVmTest(fn, t)
}

func TestStateSpecialTest(t *testing.T) {
    const fn = "../files/StateTests/stSpecialTest.json"
    RunVmTest(fn, t)
}