core: fix tx dedup return error count

core/tx_pool_test.go

@@ -1438,6 +1438,71 @@ func TestTransactionPoolStableUnderpricing(t *testing.T) {
 	}
 }
 
+// Tests that the pool rejects duplicate transactions.
+func TestTransactionDeduplication(t *testing.T) {
+	t.Parallel()
+
+	// Create the pool to test the pricing enforcement with
+	statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()))
+	blockchain := &testBlockChain{statedb, 1000000, new(event.Feed)}
+
+	pool := NewTxPool(testTxPoolConfig, params.TestChainConfig, blockchain)
+	defer pool.Stop()
+
+	// Create a test account to add transactions with
+	key, _ := crypto.GenerateKey()
+	pool.currentState.AddBalance(crypto.PubkeyToAddress(key.PublicKey), big.NewInt(1000000000))
+
+	// Create a batch of transactions and add a few of them
+	txs := make([]*types.Transaction, 16)
+	for i := 0; i < len(txs); i++ {
+		txs[i] = pricedTransaction(uint64(i), 100000, big.NewInt(1), key)
+	}
+	var firsts []*types.Transaction
+	for i := 0; i < len(txs); i += 2 {
+		firsts = append(firsts, txs[i])
+	}
+	errs := pool.AddRemotesSync(firsts)
+	if len(errs) != len(firsts) {
+		t.Fatalf("first add mismatching result count: have %d, want %d", len(errs), len(firsts))
+	}
+	for i, err := range errs {
+		if err != nil {
+			t.Errorf("add %d failed: %v", i, err)
+		}
+	}
+	pending, queued := pool.Stats()
+	if pending != 1 {
+		t.Fatalf("pending transactions mismatched: have %d, want %d", pending, 1)
+	}
+	if queued != len(txs)/2-1 {
+		t.Fatalf("queued transactions mismatched: have %d, want %d", queued, len(txs)/2-1)
+	}
+	// Try to add all of them now and ensure previous ones error out as knowns
+	errs = pool.AddRemotesSync(txs)
+	if len(errs) != len(txs) {
+		t.Fatalf("all add mismatching result count: have %d, want %d", len(errs), len(txs))
+	}
+	for i, err := range errs {
+		if i%2 == 0 && err == nil {
+			t.Errorf("add %d succeeded, should have failed as known", i)
+		}
+		if i%2 == 1 && err != nil {
+			t.Errorf("add %d failed: %v", i, err)
+		}
+	}
+	pending, queued = pool.Stats()
+	if pending != len(txs) {
+		t.Fatalf("pending transactions mismatched: have %d, want %d", pending, len(txs))
+	}
+	if queued != 0 {
+		t.Fatalf("queued transactions mismatched: have %d, want %d", queued, 0)
+	}
+	if err := validateTxPoolInternals(pool); err != nil {
+		t.Fatalf("pool internal state corrupted: %v", err)
+	}
+}
+
 // Tests that the pool rejects replacement transactions that don't meet the minimum
 // price bump required.
 func TestTransactionReplacement(t *testing.T) {