chore: add some ut

backend/src/prisma.service.spec.ts

@@ -0,0 +1,24 @@
+import { Test, TestingModule } from "@nestjs/testing";
+import { PrismaService } from "./prisma.service";
+import { Logger } from "@nestjs/common";
+
+describe("PrismaService", () => {
+  let service: PrismaService;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [PrismaService],
+    }).compile();
+
+    service = module.get<PrismaService>(PrismaService);
+  });
+
+  afterEach(async () => {
+    await service.$disconnect();
+  });
+
+  it("should be defined", () => {
+    expect(service).toBeDefined();
+  });
+
+});