fix: returning empty object on db utils and added test for services i…

…ncluding db

packages/daemon/__tests__/services/services_with_db.test.ts

@@ -0,0 +1,64 @@
+/**
+ * Copyright (c) Hathor Labs and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import * as db from '../../src/db';
+import { handleVoidedTx } from '../../src/services';
+import { LRU } from '../../src/utils';
+
+/**
+ * @jest-environment node
+ */
+
+describe('handleVoidedTx (db)', () => {
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  it('should handle transactions with an empty list of inputs', async () => {
+    const voidTxSpy = jest.spyOn(db, 'voidTransaction');
+    voidTxSpy.mockResolvedValue();
+
+    const context = {
+      socket: expect.any(Object),
+      healthcheck: expect.any(Object),
+      retryAttempt: expect.any(Number),
+      initialEventId: expect.any(Number),
+      txCache: expect.any(LRU),
+      event: {
+        stream_id: 'stream-id',
+        peer_id: 'peer_id',
+        network: 'testnet',
+        type: 'FULLNODE_EVENT',
+        latest_event_id: 4,
+        event: {
+          id: 5,
+          data: {
+            hash: 'random-hash',
+            outputs: [],
+            inputs: [],
+            tokens: [],
+          },
+        },
+      },
+    };
+
+    const mysql = await db.getDbConnection();
+    const lastEvent = await db.getLastSyncedEvent(mysql);
+
+    await expect(handleVoidedTx(context as any)).resolves.not.toThrow();
+    expect(db.voidTransaction).toHaveBeenCalledWith(
+      expect.any(Object),
+      'random-hash',
+      expect.any(Object),
+    );
+    expect(lastEvent).toStrictEqual({
+      id: expect.any(Number),
+      last_event_id: 5,
+      updated_at: expect.any(String),
+    });
+  });
+});

packages/daemon/src/db/index.ts

@@ -1413,6 +1413,10 @@ export const fetchAddressBalance = async (
   mysql: MysqlConnection,
   addresses: string[],
 ): Promise<AddressBalance[]> => {
+  if (addresses.length === 0) {
+    return [];
+  }
+
   const [results] = await mysql.query<AddressBalanceRow[]>(
     `SELECT *
        FROM \`address_balance\`
@@ -1443,6 +1447,10 @@ export const fetchAddressTxHistorySum = async (
   mysql: MysqlConnection,
   addresses: string[],
 ): Promise<AddressTotalBalance[]> => {
+  if (addresses.length === 0) {
+    return [];
+  }
+
   const [results] = await mysql.query<AddressTxHistorySumRow[]>(
     `SELECT address,
             token_id,

packages/daemon/src/utils/wallet.ts

@@ -58,6 +58,10 @@ import { stringMapIterator } from './helpers';
  *                                  metadata.
  */
 export const prepareOutputs = (outputs: EventTxOutput[], tokens: string[]): TxOutputWithIndex[] => {
+  if (outputs.length === 0) {
+    return [];
+  }
+
   const preparedOutputs: [number, TxOutputWithIndex[]] = outputs.reduce(
     ([currIndex, newOutputs]: [number, TxOutputWithIndex[]], _output: EventTxOutput): [number, TxOutputWithIndex[]] => {
       const output = new Output(_output.value, Buffer.from(_output.script, 'base64'), {