Add TransactionTests wrapped as Go tests

* Add initial go wrapping for TransactionTests with some tests
  disabled in lieu of consistent HEX encodings and a few other
  pending bugfixes
* TODO: Consider better way of perhaps modelling each test in
  the JSON files as a single Go test, instead of one Go test per
  JSON file

tests/blocktest.go

@@ -81,7 +81,7 @@ type BlockTest struct {
 // LoadBlockTests loads a block test JSON file.
 func LoadBlockTests(file string) (map[string]*BlockTest, error) {
 	bt := make(map[string]*btJSON)
-	if err := loadJSON(file, &bt); err != nil {
+	if err := LoadJSON(file, &bt); err != nil {
 		return nil, err
 	}
 	out := make(map[string]*BlockTest)
@@ -250,6 +250,14 @@ func mustConvertBigInt10(in string) *big.Int {
 	return out
 }
 
+func mustConvertBigIntHex(in string) *big.Int {
+	out, ok := new(big.Int).SetString(in, 16)
+	if !ok {
+		panic(fmt.Errorf("invalid integer: %q", in))
+	}
+	return out
+}
+
 func mustConvertUint(in string) uint64 {
 	out, err := strconv.ParseUint(in, 0, 64)
 	if err != nil {
@@ -258,8 +266,16 @@ func mustConvertUint(in string) uint64 {
 	return out
 }
 
-// loadJSON reads the given file and unmarshals its content.
-func loadJSON(file string, val interface{}) error {
+func mustConvertUintHex(in string) uint64 {
+	out, err := strconv.ParseUint(in, 16, 64)
+	if err != nil {
+		panic(fmt.Errorf("invalid integer: %q", in))
+	}
+	return out
+}
+
+// LoadJSON reads the given file and unmarshals its content.
+func LoadJSON(file string, val interface{}) error {
 	content, err := ioutil.ReadFile(file)
 	if err != nil {
 		return err

tests/transaction_test.go

@@ -0,0 +1,58 @@
+package tests
+
+import (
+	"testing"
+)
+
+func TestTransactions(t *testing.T) {
+	notWorking := make(map[string]bool, 100)
+	// TODO: all commented out tests should work!
+
+	snafus := []string{
+		"AddressLessThan20Prefixed0",
+		"DataTest",
+		"EmptyTransaction",
+		"RightVRSTest",
+		"SenderTest",
+		"TransactionWithGasLimitxPriceOverflow",
+		"TransactionWithHihghGas",
+		"TransactionWithHihghGasPrice",
+		"TransactionWithHihghNonce",
+		"TransactionWithHihghValue",
+		"TransactionWithRvalueWrongSize",
+		"TransactionWithSvalueHigh",
+		"TransactionWithSvalueTooHigh",
+		"TransactionWithSvalueWrongSize",
+		"ValuesAsDec",
+		"ValuesAsHex",
+		"libsecp256k1test",
+		"unpadedRValue"}
+
+	for _, name := range snafus {
+		notWorking[name] = true
+	}
+
+	var err error
+	err = RunTransactionTests("./files/TransactionTests/ttTransactionTest.json",
+		notWorking)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestWrongRLPTransactions(t *testing.T) {
+	notWorking := make(map[string]bool, 100)
+	// TODO: all commented out tests should work!
+	notWorking[""] = true
+	notWorking[""] = true
+	notWorking[""] = true
+	notWorking[""] = true
+	notWorking[""] = true
+
+	var err error
+	err = RunTransactionTests("./files/TransactionTests/ttWrongRLPTransaction.json",
+		notWorking)
+	if err != nil {
+		t.Fatal(err)
+	}
+}

tests/transaction_test_util.go

@@ -0,0 +1,134 @@
+package tests
+
+import (
+	"bytes"
+	"fmt"
+	"math/big"
+	"runtime"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/core/types"
+	"github.com/ethereum/go-ethereum/rlp"
+)
+
+// Transaction Test JSON Format
+type TtTransaction struct {
+	Data     string
+	GasLimit string
+	GasPrice string
+	Nonce    string
+	R        string
+	S        string
+	To       string
+	V        string
+	Value    string
+}
+
+type TransactionTest struct {
+	Rlp         string
+	Sender      string
+	Transaction TtTransaction
+}
+
+func RunTransactionTests(file string, notWorking  map[string]bool) error {
+	bt := make(map[string]TransactionTest)
+	if err := LoadJSON(file, &bt); err != nil {
+		return err
+	}
+	for name, in := range bt {
+		var err error
+		// TODO: remove this, we currently ignore some tests which are broken
+		if !notWorking[name] {
+			if err = runTest(in); err != nil {
+				return fmt.Errorf("bad test %s: %v", name, err)
+			}
+			fmt.Println("Test passed:", name)
+		}
+	}
+	return nil
+}
+
+func runTest(txTest TransactionTest) (err error) {
+	expectedSender, expectedTo, expectedData, rlpBytes, expectedGasLimit, expectedGasPrice, expectedValue, expectedR, expectedS, expectedNonce, expectedV, err := convertTestTypes(txTest)
+
+	if err != nil {
+		if txTest.Sender == "" { // tx is invalid and this is expected (test OK)
+			return nil
+		} else {
+			return err // tx is invalid and this is NOT expected (test FAIL)
+		}
+	}
+	tx := new(types.Transaction)
+	rlp.DecodeBytes(rlpBytes, tx)
+
+	sender, err := tx.From()
+	if err != nil {
+		return err
+	}
+
+	if expectedSender != sender {
+		return fmt.Errorf("Sender mismatch: %v %v", expectedSender, sender)
+	}
+	if !bytes.Equal(expectedData, tx.Payload) {
+		return fmt.Errorf("Tx input data mismatch: %#v %#v", expectedData, tx.Payload)
+	}
+	if expectedGasLimit.Cmp(tx.GasLimit) != 0 {
+		return fmt.Errorf("GasLimit mismatch: %v %v", expectedGasLimit, tx.GasLimit)
+	}
+	if expectedGasPrice.Cmp(tx.Price) != 0 {
+		return fmt.Errorf("GasPrice mismatch: %v %v", expectedGasPrice, tx.Price)
+	}
+	if expectedNonce != tx.AccountNonce {
+		return fmt.Errorf("Nonce mismatch: %v %v", expectedNonce, tx.AccountNonce)
+	}
+	if expectedR.Cmp(tx.R) != 0 {
+		return fmt.Errorf("R mismatch: %v %v", expectedR, tx.R)
+	}
+	if expectedS.Cmp(tx.S) != 0 {
+		return fmt.Errorf("S mismatch: %v %v", expectedS, tx.S)
+	}
+	if expectedV != uint64(tx.V) {
+		return fmt.Errorf("V mismatch: %v %v", expectedV, uint64(tx.V))
+	}
+	if expectedTo != *tx.Recipient {
+		return fmt.Errorf("To mismatch: %v %v", expectedTo, *tx.Recipient)
+	}
+	if expectedValue.Cmp(tx.Amount) != 0 {
+		return fmt.Errorf("Value mismatch: %v %v", expectedValue, tx.Amount)
+	}
+
+	return nil
+}
+
+func convertTestTypes(txTest TransactionTest) (sender, to common.Address,
+	txInputData, rlpBytes []byte,
+	gasLimit, gasPrice, value, r, s *big.Int,
+	nonce, v uint64,
+	err error) {
+
+	defer func() {
+		if recovered := recover(); recovered != nil {
+			buf := make([]byte, 64<<10)
+			buf = buf[:runtime.Stack(buf, false)]
+			err = fmt.Errorf("%v\n%s", recovered, buf)
+		}
+	}()
+
+	sender = mustConvertAddress(txTest.Sender)
+	to = mustConvertAddress(txTest.Transaction.To)
+
+	txInputData = mustConvertBytes(txTest.Transaction.Data)
+	rlpBytes = mustConvertBytes(txTest.Rlp)
+
+	gasLimit = mustConvertBigIntHex(txTest.Transaction.GasLimit)
+	gasPrice = mustConvertBigIntHex(txTest.Transaction.GasPrice)
+	value = mustConvertBigIntHex(txTest.Transaction.Value)
+
+	r = common.Bytes2Big(mustConvertBytes(txTest.Transaction.R))
+	s = common.Bytes2Big(mustConvertBytes(txTest.Transaction.S))
+
+	nonce = mustConvertUintHex(txTest.Transaction.Nonce)
+	v = mustConvertUintHex(txTest.Transaction.V)
+
+	return sender, to, txInputData, rlpBytes, gasLimit, gasPrice, value, r, s, nonce, v, nil
+}