Split tests from helper code

1 files changed, 219 insertions, 0 deletions

diff --git a/tests/vm_test_util.go b/tests/vm_test_util.go
new file mode 100644
index 000000000..f91070736
--- /dev/null
+++ b/tests/vm_test_util.go
@@ -0,0 +1,219 @@
+package tests
+
+import (
+	"bytes"
+	"math/big"
+	"strconv"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/ethdb"
+	"github.com/ethereum/go-ethereum/logger"
+	"github.com/ethereum/go-ethereum/tests/helper"
+)
+
+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 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          []Log
+	Gas           string
+	Out           string
+	Post          map[string]Account
+	Pre           map[string]Account
+	PostStateRoot string
+}
+
+func RunVmTest(p string, t *testing.T) {
+
+	tests := make(map[string]VmTest)
+	helper.CreateFileTests(t, p, &tests)
+
+	for name, test := range tests {
+		/*
+		   vm.Debug = true
+		   glog.SetV(4)
+		   glog.SetToStderr(true)
+		   if name != "Call50000_sha256" {
+		     continue
+		   }
+		*/
+		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(v))
+			}
+		}
+
+		// 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
+		)
+
+		isVmTest := len(test.Exec) > 0
+		if isVmTest {
+			ret, logs, gas, err = helper.RunVm(statedb, env, test.Exec)
+		} else {
+			ret, logs, gas, err = helper.RunState(statedb, env, test.Transaction)
+		}
+
+		switch name {
+		// the memory required for these tests (4294967297 bytes) would take too much time.
+		// on 19 May 2015 decided to skip these tests their output.
+		case "mload32bitBound_return", "mload32bitBound_return2":
+		default:
+			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 isVmTest {
+			if len(test.Gas) == 0 && err == nil {
+				t.Errorf("%s's gas unspecified, indicating an error. VM returned (incorrectly) successfull", name)
+			} else {
+				gexp := common.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(common.HexToAddress(addr))
+			if obj == nil {
+				continue
+			}
+
+			if len(test.Exec) == 0 {
+				if obj.Balance().Cmp(common.Big(account.Balance)) != 0 {
+					t.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() {
+					t.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))
+				vexp := common.HexToHash(value)
+
+				if v != vexp {
+					t.Errorf("%s's : (%x: %s) storage failed. Expected %x, got %x (%v %v)\n", name, obj.Address().Bytes()[0:4], addr, vexp, v, vexp.Big(), v.Big())
+				}
+			}
+		}
+
+		if !isVmTest {
+			statedb.Sync()
+			//if !bytes.Equal(common.Hex2Bytes(test.PostStateRoot), statedb.Root()) {
+			if common.HexToHash(test.PostStateRoot) != statedb.Root() {
+				t.Errorf("%s's : Post state root error. Expected %s, got %x", name, test.PostStateRoot, statedb.Root())
+			}
+		}
+
+		if len(test.Logs) > 0 {
+			if len(test.Logs) != len(logs) {
+				t.Errorf("log length mismatch. Expected %d, got %d", len(test.Logs), len(logs))
+			} else {
+				for i, log := range test.Logs {
+					if common.HexToAddress(log.AddressF) != logs[i].Address {
+						t.Errorf("'%s' log address expected %v got %x", name, log.AddressF, logs[i].Address)
+					}
+
+					if !bytes.Equal(logs[i].Data, helper.FromHex(log.DataF)) {
+						t.Errorf("'%s' log data expected %v got %x", name, log.DataF, logs[i].Data)
+					}
+
+					if len(log.TopicsF) != len(logs[i].Topics) {
+						t.Errorf("'%s' log topics length expected %d got %d", name, len(log.TopicsF), logs[i].Topics)
+					} else {
+						for j, topic := range log.TopicsF {
+							if common.HexToHash(topic) != logs[i].Topics[j] {
+								t.Errorf("'%s' log topic[%d] expected %v got %x", name, 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)) {
+						t.Errorf("'%s' bloom mismatch", name)
+					}
+				}
+			}
+		}
+		//fmt.Println(string(statedb.Dump()))
+	}
+	logger.Flush()
+}