Working on test suite

tests/helper/common.go

+package helper
+
+import "github.com/ethereum/eth-go/ethutil"
+
+func FromHex(h string) []byte {
+	if ethutil.IsHex(h) {
+		h = h[2:]
+	}
+
+	return ethutil.Hex2Bytes(h)
+}

tests/helper/http.go

+package helper
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+)
+
+func CreateTests(uri string, value interface{}) error {
+	resp, err := http.Get(uri)
+	if err != nil {
+		panic(err)
+	}
+	defer resp.Body.Close()
+
+	data, err := ioutil.ReadAll(resp.Body)
+
+	err = json.Unmarshal(data, &value)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

tests/helper/init.go

+package helper
+
+import (
+	"log"
+	"os"
+
+	"github.com/ethereum/eth-go/ethlog"
+	"github.com/ethereum/eth-go/ethutil"
+)
+
+func init() {
+	ethlog.AddLogSystem(ethlog.NewStdLogSystem(os.Stdout, log.LstdFlags, ethlog.LogLevel(4)))
+
+	ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
+}

tests/helper/trie.go

+package helper
+
+import "github.com/ethereum/eth-go/ethtrie"
+
+type MemDatabase struct {
+	db map[string][]byte
+}
+
+func NewMemDatabase() (*MemDatabase, error) {
+	db := &MemDatabase{db: make(map[string][]byte)}
+	return db, nil
+}
+func (db *MemDatabase) Put(key []byte, value []byte) {
+	db.db[string(key)] = value
+}
+func (db *MemDatabase) Get(key []byte) ([]byte, error) {
+	return db.db[string(key)], nil
+}
+func (db *MemDatabase) Delete(key []byte) error {
+	delete(db.db, string(key))
+	return nil
+}
+func (db *MemDatabase) Print()              {}
+func (db *MemDatabase) Close()              {}
+func (db *MemDatabase) LastKnownTD() []byte { return nil }
+
+func NewTrie() *ethtrie.Trie {
+	db, _ := NewMemDatabase()
+
+	return ethtrie.New(db, "")
+}

tests/helper/vm.go

+package helper
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/eth-go/ethstate"
+	"github.com/ethereum/eth-go/ethtrie"
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/eth-go/ethvm"
+)
+
+type Env struct {
+	state *ethstate.State
+
+	origin   []byte
+	parent   []byte
+	coinbase []byte
+
+	number     *big.Int
+	time       int64
+	difficulty *big.Int
+}
+
+func NewEnv(state *ethstate.State) *Env {
+	return &Env{
+		state: state,
+	}
+}
+
+func NewEnvFromMap(state *ethstate.State, envValues map[string]string, exeValues map[string]string) *Env {
+	env := NewEnv(state)
+
+	env.origin = ethutil.Hex2Bytes(exeValues["caller"])
+	env.parent = ethutil.Hex2Bytes(envValues["previousHash"])
+	env.coinbase = ethutil.Hex2Bytes(envValues["currentCoinbase"])
+	env.number = ethutil.Big(envValues["currentNumber"])
+	env.time = ethutil.Big(envValues["currentTime"]).Int64()
+
+	return env
+}
+
+func (self *Env) Origin() []byte        { return self.origin }
+func (self *Env) BlockNumber() *big.Int { return self.number }
+func (self *Env) PrevHash() []byte      { return self.parent }
+func (self *Env) Coinbase() []byte      { return self.coinbase }
+func (self *Env) Time() int64           { return self.time }
+func (self *Env) Difficulty() *big.Int  { return self.difficulty }
+func (self *Env) BlockHash() []byte     { return nil }
+
+// This is likely to fail if anything ever gets looked up in the state trie :-)
+func (self *Env) State() *ethstate.State { return ethstate.New(ethtrie.New(nil, "")) }
+
+func RunVm(state *ethstate.State, env, exec map[string]string) ([]byte, *big.Int) {
+	caller := state.NewStateObject(ethutil.Hex2Bytes(exec["caller"]))
+	callee := state.GetStateObject(ethutil.Hex2Bytes(exec["address"]))
+	closure := ethvm.NewClosure(nil, caller, callee, callee.Code, ethutil.Big(exec["gas"]), ethutil.Big(exec["gasPrice"]))
+
+	vm := ethvm.New(NewEnvFromMap(state, env, exec), ethvm.DebugVmTy)
+	ret, _, e := closure.Call(vm, nil)
+	if e != nil {
+		fmt.Println(e)
+	}
+
+	return ret, closure.Gas
+}

tests/vm/gh_test.go

+package ethvm
+
+import (
+	"bytes"
+	"log"
+	"testing"
+
+	"github.com/ethereum/eth-go/ethstate"
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/eth-go/tests/helper"
+)
+
+type Account struct {
+	Balance string
+	Code    string
+	Nonce   string
+	Storage map[string]string
+}
+
+func StateObjectFromAccount(addr string, account Account) *ethstate.StateObject {
+	obj := ethstate.NewStateObject(ethutil.Hex2Bytes(addr))
+	obj.Balance = 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 TestRemote(t *testing.T) {
+	tests := make(map[string]VmTest)
+	err := helper.CreateTests("https://raw.githubusercontent.com/ethereum/tests/master/vmtests/vmSha3Test.json", &tests)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for name, test := range tests {
+		state := ethstate.New(helper.NewTrie())
+		for addr, account := range test.Pre {
+			obj := StateObjectFromAccount(addr, account)
+			state.SetStateObject(obj)
+		}
+
+		ret, gas := helper.RunVm(state, test.Env, test.Exec)
+
+		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)
+		}
+
+		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 := state.GetStateObject(helper.FromHex(addr))
+			for addr, value := range account.Storage {
+				v := obj.GetStorage(ethutil.BigD(helper.FromHex(addr))).Bytes()
+				vexp := helper.FromHex(value)
+
+				if bytes.Compare(v, vexp) != 0 {
+					t.Errorf("%s's : %s storage failed. Expected %x, get %x\n", name, addr, vexp, v)
+				}
+			}
+		}
+	}
+}