path: root/core/transaction_pool_test.go

package core

import (
    "crypto/ecdsa"
    "math/big"
    "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/crypto"
    "github.com/ethereum/go-ethereum/ethdb"
    "github.com/ethereum/go-ethereum/event"
)

func transaction() *types.Transaction {
    return types.NewTransactionMessage(common.Address{}, big.NewInt(100), big.NewInt(100), big.NewInt(100), nil)
}

func setupTxPool() (*TxPool, *ecdsa.PrivateKey) {
    db, _ := ethdb.NewMemDatabase()
    statedb := state.New(common.Hash{}, db)

    var m event.TypeMux
    key, _ := crypto.GenerateKey()
    return NewTxPool(&m, func() *state.StateDB { return statedb }, func() *big.Int { return big.NewInt(1000000) }), key
}

func TestInvalidTransactions(t *testing.T) {
    pool, key := setupTxPool()

    tx := transaction()
    tx.SignECDSA(key)
    err := pool.Add(tx)
    if err != ErrNonExistentAccount {
        t.Error("expected", ErrNonExistentAccount)
    }

    from, _ := tx.From()
    pool.currentState().AddBalance(from, big.NewInt(1))
    err = pool.Add(tx)
    if err != ErrInsufficientFunds {
        t.Error("expected", ErrInsufficientFunds)
    }

    balance := new(big.Int).Add(tx.Value(), new(big.Int).Mul(tx.Gas(), tx.GasPrice()))
    pool.currentState().AddBalance(from, balance)
    err = pool.Add(tx)
    if err != ErrIntrinsicGas {
        t.Error("expected", ErrIntrinsicGas, "got", err)
    }

    pool.currentState().SetNonce(from, 1)
    pool.currentState().AddBalance(from, big.NewInt(0xffffffffffffff))
    tx.GasLimit = big.NewInt(100000)
    tx.Price = big.NewInt(1)
    tx.SignECDSA(key)

    err = pool.Add(tx)
    if err != ErrNonce {
        t.Error("expected", ErrNonce)
    }
}

func TestTransactionQueue(t *testing.T) {
    pool, key := setupTxPool()
    tx := transaction()
    tx.SignECDSA(key)
    from, _ := tx.From()
    pool.currentState().AddBalance(from, big.NewInt(1))
    pool.queueTx(tx)

    pool.checkQueue()
    if len(pool.txs) != 1 {
        t.Error("expected valid txs to be 1 is", len(pool.txs))
    }

    tx = transaction()
    tx.SignECDSA(key)
    from, _ = tx.From()
    pool.currentState().SetNonce(from, 10)
    tx.SetNonce(1)
    pool.queueTx(tx)
    pool.checkQueue()
    if _, ok := pool.txs[tx.Hash()]; ok {
        t.Error("expected transaction to be in tx pool")
    }

    if len(pool.queue[from]) != 0 {
        t.Error("expected transaction queue to be empty. is", len(pool.queue[from]))
    }

    pool, key = setupTxPool()
    tx1, tx2, tx3 := transaction(), transaction(), transaction()
    tx2.SetNonce(10)
    tx3.SetNonce(11)
    tx1.SignECDSA(key)
    tx2.SignECDSA(key)
    tx3.SignECDSA(key)
    pool.queueTx(tx1)
    pool.queueTx(tx2)
    pool.queueTx(tx3)
    from, _ = tx1.From()
    pool.checkQueue()

    if len(pool.txs) != 1 {
        t.Error("expected tx pool to be 1 =")
    }

    if len(pool.queue[from]) != 3 {
        t.Error("expected transaction queue to be empty. is", len(pool.queue[from]))
    }
}

func TestRemoveTx(t *testing.T) {
    pool, key := setupTxPool()
    tx := transaction()
    tx.SignECDSA(key)
    from, _ := tx.From()
    pool.currentState().AddBalance(from, big.NewInt(1))
    pool.queueTx(tx)
    pool.addTx(tx)
    if len(pool.queue) != 1 {
        t.Error("expected queue to be 1, got", len(pool.queue))
    }

    if len(pool.txs) != 1 {
        t.Error("expected txs to be 1, got", len(pool.txs))
    }

    pool.removeTx(tx.Hash())

    if len(pool.queue) > 0 {
        t.Error("expected queue to be 0, got", len(pool.queue))
    }

    if len(pool.txs) > 0 {
        t.Error("expected txs to be 0, got", len(pool.txs))
    }
}