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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))
}
}
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