path: root/tests/transaction_test_util.go

package tests

import (
    "bytes"
    "errors"
    "fmt"
    "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("Transaction test passed:", name)
        }
    }
    return nil
}

func runTest(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: ", 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: ", 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)
        }
    }()

    decodedSender, err := decodedTx.From()
    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.Payload) {
        return fmt.Errorf("Tx input data mismatch: %#v %#v", expectedData, decodedTx.Payload)
    }

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

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

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

    expectedR := common.Bytes2Big(mustConvertBytes(txTest.Transaction.R))
    if expectedR.Cmp(decodedTx.R) != 0 {
        return fmt.Errorf("R mismatch: %v %v", expectedR, decodedTx.R)
    }

    expectedS := common.Bytes2Big(mustConvertBytes(txTest.Transaction.S))
    if expectedS.Cmp(decodedTx.S) != 0 {
        return fmt.Errorf("S mismatch: %v %v", expectedS, decodedTx.S)
    }

    expectedV := mustConvertUint(txTest.Transaction.V, 16)
    if expectedV != uint64(decodedTx.V) {
        return fmt.Errorf("V mismatch: %v %v", expectedV, uint64(decodedTx.V))
    }

    expectedTo := mustConvertAddress(txTest.Transaction.To)
    if decodedTx.Recipient == 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.Recipient {
            return fmt.Errorf("To mismatch: %v %v", expectedTo, *decodedTx.Recipient)
        }
    }

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

    return nil
}