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(nonce uint64, gaslimit *big.Int, key *ecdsa.PrivateKey) *types.Transaction { tx, _ := types.NewTransaction(nonce, common.Address{}, big.NewInt(100), gaslimit, big.NewInt(1), nil).SignECDSA(key) return tx } 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(0, big.NewInt(100), key) if err := pool.Add(tx); err != ErrNonExistentAccount { t.Error("expected", ErrNonExistentAccount) } from, _ := tx.From() pool.currentState().AddBalance(from, big.NewInt(1)) if err := pool.Add(tx); 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) if err := pool.Add(tx); err != ErrIntrinsicGas { t.Error("expected", ErrIntrinsicGas, "got", err) } pool.currentState().SetNonce(from, 1) pool.currentState().AddBalance(from, big.NewInt(0xffffffffffffff)) tx = transaction(0, big.NewInt(100000), key) if err := pool.Add(tx); err != ErrNonce { t.Error("expected", ErrNonce) } } func TestTransactionQueue(t *testing.T) { pool, key := setupTxPool() tx := transaction(0, big.NewInt(100), key) from, _ := tx.From() pool.currentState().AddBalance(from, big.NewInt(1)) pool.queueTx(tx.Hash(), tx) pool.checkQueue() if len(pool.pending) != 1 { t.Error("expected valid txs to be 1 is", len(pool.pending)) } tx = transaction(1, big.NewInt(100), key) from, _ = tx.From() pool.currentState().SetNonce(from, 2) pool.queueTx(tx.Hash(), tx) pool.checkQueue() if _, ok := pool.pending[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 := transaction(0, big.NewInt(100), key) tx2 := transaction(10, big.NewInt(100), key) tx3 := transaction(11, big.NewInt(100), key) pool.queueTx(tx1.Hash(), tx1) pool.queueTx(tx2.Hash(), tx2) pool.queueTx(tx3.Hash(), tx3) from, _ = tx1.From() pool.checkQueue() if len(pool.pending) != 1 { t.Error("expected tx pool to be 1 =") } if len(pool.queue[from]) != 2 { t.Error("expected len(queue) == 2, got", len(pool.queue[from])) } } func TestRemoveTx(t *testing.T) { pool, key := setupTxPool() tx := transaction(0, big.NewInt(100), key) from, _ := tx.From() pool.currentState().AddBalance(from, big.NewInt(1)) pool.queueTx(tx.Hash(), tx) pool.addTx(tx.Hash(), from, tx) if len(pool.queue) != 1 { t.Error("expected queue to be 1, got", len(pool.queue)) } if len(pool.pending) != 1 { t.Error("expected txs to be 1, got", len(pool.pending)) } pool.removeTx(tx.Hash()) if len(pool.queue) > 0 { t.Error("expected queue to be 0, got", len(pool.queue)) } if len(pool.pending) > 0 { t.Error("expected txs to be 0, got", len(pool.pending)) } } func TestNegativeValue(t *testing.T) { pool, key := setupTxPool() tx, _ := types.NewTransaction(0, common.Address{}, big.NewInt(-1), big.NewInt(100), big.NewInt(1), nil).SignECDSA(key) from, _ := tx.From() pool.currentState().AddBalance(from, big.NewInt(1)) if err := pool.Add(tx); err != ErrNegativeValue { t.Error("expected", ErrNegativeValue, "got", err) } } func TestTransactionChainFork(t *testing.T) { pool, key := setupTxPool() addr := crypto.PubkeyToAddress(key.PublicKey) resetState := func() { db, _ := ethdb.NewMemDatabase() statedb := state.New(common.Hash{}, db) pool.currentState = func() *state.StateDB { return statedb } pool.currentState().AddBalance(addr, big.NewInt(100000000000000)) pool.resetState() } resetState() tx := transaction(0, big.NewInt(100000), key) if err := pool.add(tx); err != nil { t.Error("didn't expect error", err) } pool.RemoveTransactions([]*types.Transaction{tx}) // reset the pool's internal state resetState() if err := pool.add(tx); err != nil { t.Error("didn't expect error", err) } } func TestTransactionDoubleNonce(t *testing.T) { pool, key := setupTxPool() addr := crypto.PubkeyToAddress(key.PublicKey) resetState := func() { db, _ := ethdb.NewMemDatabase() statedb := state.New(common.Hash{}, db) pool.currentState = func() *state.StateDB { return statedb } pool.currentState().AddBalance(addr, big.NewInt(100000000000000)) pool.resetState() } resetState() tx := transaction(0, big.NewInt(100000), key) tx2 := transaction(0, big.NewInt(1000000), key) if err := pool.add(tx); err != nil { t.Error("didn't expect error", err) } if err := pool.add(tx2); err != nil { t.Error("didn't expect error", err) } if len(pool.pending) != 2 { t.Error("expected 2 pending txs. Got", len(pool.pending)) } } func TestMissingNonce(t *testing.T) { pool, key := setupTxPool() addr := crypto.PubkeyToAddress(key.PublicKey) pool.currentState().AddBalance(addr, big.NewInt(100000000000000)) tx := transaction(1, big.NewInt(100000), key) if err := pool.add(tx); err != nil { t.Error("didn't expect error", err) } if len(pool.pending) != 0 { t.Error("expected 0 pending transactions, got", len(pool.pending)) } if len(pool.queue[addr]) != 1 { t.Error("expected 1 queued transaction, got", len(pool.queue[addr])) } }