path: root/tests/transaction_test_util.go

// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

package tests

import (
    "bytes"
    "errors"
    "fmt"
    "io"
    "runtime"

    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/core/types"
    "github.com/ethereum/go-ethereum/logger/glog"
    "github.com/ethereum/go-ethereum/params"
    "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 {
    Blocknumber string
    Rlp         string
    Sender      string
    Transaction TtTransaction
}

func RunTransactionTestsWithReader(r io.Reader, skipTests []string) error {
    skipTest := make(map[string]bool, len(skipTests))
    for _, name := range skipTests {
        skipTest[name] = true
    }

    bt := make(map[string]TransactionTest)
    if err := readJson(r, &bt); err != nil {
        return err
    }

    for name, test := range bt {
        // if the test should be skipped, return
        if skipTest[name] {
            glog.Infoln("Skipping transaction test", name)
            return nil
        }
        // test the block
        if err := runTransactionTest(test); err != nil {
            return err
        }
        glog.Infoln("Transaction test passed: ", name)

    }
    return nil
}

func RunTransactionTests(file string, skipTests []string) error {
    tests := make(map[string]TransactionTest)
    if err := readJsonFile(file, &tests); err != nil {
        return err
    }

    if err := runTransactionTests(tests, skipTests); err != nil {
        return err
    }
    return nil
}

func runTransactionTests(tests map[string]TransactionTest, skipTests []string) error {
    skipTest := make(map[string]bool, len(skipTests))
    for _, name := range skipTests {
        skipTest[name] = true
    }

    for name, test := range tests {
        // if the test should be skipped, return
        if skipTest[name] {
            glog.Infoln("Skipping transaction test", name)
            return nil
        }

        // test the block
        if err := runTransactionTest(test); err != nil {
            return fmt.Errorf("%s: %v", name, err)
        }
        glog.Infoln("Transaction test passed: ", name)

    }
    return nil
}

func runTransactionTest(txTest TransactionTest) (err error) {
    tx := new(types.Transaction)
    err = rlp.DecodeBytes(mustConvertBytes(txTest.Rlp), tx)

    if err != nil {
        if txTest.Sender == "" {
            // RLP decoding failed and this is expected (test OK)
            return nil
        } else {
            // RLP decoding failed but is expected to succeed (test FAIL)
            return fmt.Errorf("RLP decoding failed when expected to succeed: %s", err)
        }
    }

    validationError := verifyTxFields(txTest, tx)
    if txTest.Sender == "" {
        if validationError != nil {
            // RLP decoding works but validation should fail (test OK)
            return nil
        } else {
            // RLP decoding works but validation should fail (test FAIL)
            // (this should not be possible but added here for completeness)
            return errors.New("Field validations succeeded but should fail")
        }
    }

    if txTest.Sender != "" {
        if validationError == nil {
            // RLP decoding works and validations pass (test OK)
            return nil
        } else {
            // RLP decoding works and validations pass (test FAIL)
            return fmt.Errorf("Field validations failed after RLP decoding: %s", validationError)
        }
    }
    return errors.New("Should not happen: verify RLP decoding and field validation")
}

func verifyTxFields(txTest TransactionTest, decodedTx *types.Transaction) (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)
        }
    }()

    var (
        decodedSender common.Address
    )

    chainConfig := &params.ChainConfig{HomesteadBlock: params.MainNetHomesteadBlock}
    if chainConfig.IsHomestead(common.String2Big(txTest.Blocknumber)) {
        decodedSender, err = decodedTx.From()
    } else {
        decodedSender, err = decodedTx.FromFrontier()
    }
    if err != nil {
        return err
    }

    expectedSender := mustConvertAddress(txTest.Sender)
    if expectedSender != decodedSender {
        return fmt.Errorf("Sender mismatch: %v %v", expectedSender, decodedSender)
    }

    expectedData := mustConvertBytes(txTest.Transaction.Data)
    if !bytes.Equal(expectedData, decodedTx.Data()) {
        return fmt.Errorf("Tx input data mismatch: %#v %#v", expectedData, decodedTx.Data())
    }

    expectedGasLimit := mustConvertBigInt(txTest.Transaction.GasLimit, 16)
    if expectedGasLimit.Cmp(decodedTx.Gas()) != 0 {
        return fmt.Errorf("GasLimit mismatch: %v %v", expectedGasLimit, decodedTx.Gas())
    }

    expectedGasPrice := mustConvertBigInt(txTest.Transaction.GasPrice, 16)
    if expectedGasPrice.Cmp(decodedTx.GasPrice()) != 0 {
        return fmt.Errorf("GasPrice mismatch: %v %v", expectedGasPrice, decodedTx.GasPrice())
    }

    expectedNonce := mustConvertUint(txTest.Transaction.Nonce, 16)
    if expectedNonce != decodedTx.Nonce() {
        return fmt.Errorf("Nonce mismatch: %v %v", expectedNonce, decodedTx.Nonce())
    }

    v, r, s := decodedTx.SignatureValues()
    expectedR := mustConvertBigInt(txTest.Transaction.R, 16)
    if r.Cmp(expectedR) != 0 {
        return fmt.Errorf("R mismatch: %v %v", expectedR, r)
    }
    expectedS := mustConvertBigInt(txTest.Transaction.S, 16)
    if s.Cmp(expectedS) != 0 {
        return fmt.Errorf("S mismatch: %v %v", expectedS, s)
    }
    expectedV := mustConvertUint(txTest.Transaction.V, 16)
    if uint64(v) != expectedV {
        return fmt.Errorf("V mismatch: %v %v", expectedV, v)
    }

    expectedTo := mustConvertAddress(txTest.Transaction.To)
    if decodedTx.To() == nil {
        if expectedTo != common.BytesToAddress([]byte{}) { // "empty" or "zero" address
            return fmt.Errorf("To mismatch when recipient is nil (contract creation): %v", expectedTo)
        }
    } else {
        if expectedTo != *decodedTx.To() {
            return fmt.Errorf("To mismatch: %v %v", expectedTo, *decodedTx.To())
        }
    }

    expectedValue := mustConvertBigInt(txTest.Transaction.Value, 16)
    if expectedValue.Cmp(decodedTx.Value()) != 0 {
        return fmt.Errorf("Value mismatch: %v %v", expectedValue, decodedTx.Value())
    }

    return nil
}