diff --git a/src/indexer/indexer.fixture.ts b/src/indexer/indexer.fixture.ts
index bc326f5..7785595 100644
--- a/src/indexer/indexer.fixture.ts
+++ b/src/indexer/indexer.fixture.ts
@@ -1,5 +1,6 @@
 export const testData = [
     {
+        txid: '1',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -31,6 +32,7 @@ export const testData = [
             '024ac253c216532e961988e2a8ce266a447c894c781e52ef6cee902361db960004',
     },
     {
+        txid: '2',
         vin: [
             {
                 txid: 'a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d',
@@ -62,6 +64,7 @@ export const testData = [
             '024ac253c216532e961988e2a8ce266a447c894c781e52ef6cee902361db960004',
     },
     {
+        txid: '3',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -93,6 +96,7 @@ export const testData = [
             '03aeea547819c08413974e2ab2b12212e007166bb2058f88b009e082b9b4914a58',
     },
     {
+        txid: '4',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -124,6 +128,7 @@ export const testData = [
             '031f9a80d0938cf980b51f7cc4fad713d49037f430646dff129c0570d75a40d8f0',
     },
     {
+        txid: '5',
         vin: [
             {
                 txid: 'a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d',
@@ -155,6 +160,7 @@ export const testData = [
             '024cad5180a093d3af0f49f586bdf37f890920178e68e80561ed53351d0fa499ad',
     },
     {
+        txid: '6',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -186,6 +192,7 @@ export const testData = [
             '0319949463fc6a2368d999a2a6a2bcb2dbf64a2ac6e00b3ba5659780c860a6d9e0',
     },
     {
+        txid: '7',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -219,6 +226,7 @@ export const testData = [
             '02dc59cc8e8873b65c1dd5c416d4fbeb647372c329bd84a70c05b310e222e2c183',
     },
     {
+        txid: '8',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -252,6 +260,7 @@ export const testData = [
             '03b990f5b1d90ea8fd4bdd5c856a9dfe17035d196958062e2c6cb4c99e413f3548',
     },
     {
+        txid: '9',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -284,6 +293,7 @@ export const testData = [
             '0233c2a447b8b244e4ffcfb59fe365eaa3bb22288b31e2113b9998861f40d4d6da',
     },
     {
+        txid: '10',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -316,6 +326,7 @@ export const testData = [
             '02d4e4f2c4cdb71c9c39a700a9ee1a0fc05b98362a441183f5770af7d6e2b3038c',
     },
     {
+        txid: '11',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -362,6 +373,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '12',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -393,6 +405,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '13',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -424,6 +437,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '14',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -455,6 +469,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '15',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -501,6 +516,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '16',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -537,6 +553,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '17',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -623,6 +640,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '18',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -659,6 +677,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '19',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -707,6 +726,7 @@ export const testData = [
             '02213b872c9a6ee28a0d861384a1b3e3ec7257f4855ed09b4323e3899f3b028989',
     },
     {
+        txid: '20',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -747,6 +767,7 @@ export const testData = [
             '028d6617f9bfe08604beb2188f4eebec923f5f8cc436fa6d14e4256e49bc32e7c8',
     },
     {
+        txid: '21',
         vin: [
             {
                 txid: 'a1075db55d416d3ca199f55b6084e2115b9345e16c5cf302fc80e9d5fbf5d48d',
@@ -788,6 +809,7 @@ export const testData = [
             '02b04034f00da0678507d1345b7d56fecef825a1151f9dc7d8ca6946452a9e1f43',
     },
     {
+        txid: '22',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -829,6 +851,7 @@ export const testData = [
             '02b04034f00da0678507d1345b7d56fecef825a1151f9dc7d8ca6946452a9e1f43',
     },
     {
+        txid: '23',
         vin: [
             {
                 txid: 'f4184fc596403b9d638783cf57adfe4c75c605f6356fbc91338530e9831e9e16',
@@ -866,6 +889,7 @@ export const testData = [
             '0314bec14463d6c0181083d607fecfba67bb83f95915f6f247975ec566d5642ee8',
     },
     {
+        txid: '24',
         scanTweak: null,
         vin: [
             {
diff --git a/src/indexer/indexer.service.spec.ts b/src/indexer/indexer.service.spec.ts
index 5187b05..8c6e774 100644
--- a/src/indexer/indexer.service.spec.ts
+++ b/src/indexer/indexer.service.spec.ts
@@ -4,21 +4,30 @@ import { getRepositoryToken } from '@nestjs/typeorm';
 import { Transaction } from '@/transactions/transaction.entity';
 import { IndexerService } from '@/indexer/indexer.service';
 import { testData } from '@/indexer/indexer.fixture';
+import { DataSource, Repository } from 'typeorm';
 
 describe('IndexerService', () => {
     let service: IndexerService;
-    const saveMock = jest.fn();
+    let repository: Repository<Transaction>;
+    beforeEach(async () => {
+        const datasource = new DataSource({
+            type: 'sqlite',
+            database: ':memory:',
+            dropSchema: true,
+            entities: [Transaction],
+            synchronize: true,
+            logging: false,
+        });
+        await datasource.initialize();
+        repository = datasource.getRepository(Transaction);
 
-    beforeAll(async () => {
         const module: TestingModule = await Test.createTestingModule({
             providers: [
                 IndexerService,
                 TransactionsService,
                 {
                     provide: getRepositoryToken(Transaction),
-                    useValue: {
-                        save: saveMock,
-                    },
+                    useValue: repository,
                 },
             ],
         }).compile();
@@ -30,24 +39,21 @@ describe('IndexerService', () => {
         expect(service).toBeDefined();
     });
 
-    it.each(testData)('should index transaction', async (testData) => {
-        await service.index(
-            '0000000000000000000000000000000000000000000000000000000000000000',
-            testData.vin,
-            testData.vout,
-            0,
-            '0000000000000000000000000000000000000000000000000000000000000000',
-        );
-
-        if (testData.scanTweak) {
-            expect(saveMock).toHaveBeenCalled();
-            expect(saveMock.mock.calls[0][0].scanTweak).toBe(
-                testData.scanTweak,
+    it('should index transaction', async () => {
+        for (const data of testData) {
+            await service.index(
+                data.txid,
+                data.vin,
+                data.vout,
+                0,
+                '0000000000000000000000000000000000000000000000000000000000000000',
             );
-        } else {
-            expect(saveMock).not.toHaveBeenCalled();
         }
-
-        jest.clearAllMocks();
+        const indexed_length = await repository.count();
+        expect(indexed_length).toEqual(23);
+        const absence_tweaked = await repository.findOne({
+            where: { id: '24' },
+        });
+        expect(absence_tweaked).toBeNull();
     });
 });