diff --git a/src/modules/authentication/tests/unit/core/delete-authentication.service.spec.ts b/src/modules/authentication/tests/unit/core/delete-authentication.service.spec.ts
new file mode 100644
index 0000000..5c8824c
--- /dev/null
+++ b/src/modules/authentication/tests/unit/core/delete-authentication.service.spec.ts
@@ -0,0 +1,54 @@
+import { AUTHENTICATION_REPOSITORY } from '@modules/authentication/authentication.di-tokens';
+import { DeleteAuthenticationCommand } from '@modules/authentication/core/application/commands/delete-authentication/delete-authentication.command';
+import { DeleteAuthenticationService } from '@modules/authentication/core/application/commands/delete-authentication/delete-authentication.service';
+import { DeleteAuthenticationRequestDto } from '@modules/authentication/interface/grpc-controllers/dtos/delete-authentication.request.dto';
+import { Test, TestingModule } from '@nestjs/testing';
+
+const deleteAuthenticationRequest: DeleteAuthenticationRequestDto = {
+  userId: '165192d4-398a-4469-a16b-98c02cc6f531',
+};
+
+const mockAuthenticationEntity = {
+  delete: jest.fn(),
+};
+
+const mockAuthenticationRepository = {
+  findOneById: jest.fn().mockImplementation(() => mockAuthenticationEntity),
+  delete: jest.fn().mockImplementationOnce(() => true),
+};
+
+describe('Delete Authentication Service', () => {
+  let deleteAuthenticationService: DeleteAuthenticationService;
+
+  beforeAll(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [
+        {
+          provide: AUTHENTICATION_REPOSITORY,
+          useValue: mockAuthenticationRepository,
+        },
+        DeleteAuthenticationService,
+      ],
+    }).compile();
+
+    deleteAuthenticationService = module.get<DeleteAuthenticationService>(
+      DeleteAuthenticationService,
+    );
+  });
+
+  it('should be defined', () => {
+    expect(deleteAuthenticationService).toBeDefined();
+  });
+
+  describe('execution', () => {
+    const deleteAuthenticationCommand = new DeleteAuthenticationCommand(
+      deleteAuthenticationRequest,
+    );
+    it('should delete an authentication', async () => {
+      const result: boolean = await deleteAuthenticationService.execute(
+        deleteAuthenticationCommand,
+      );
+      expect(result).toBeTruthy();
+    });
+  });
+});