added testing

package.json

@@ -11,7 +11,10 @@
     "lint:fix": "eslint . --ext .ts --fix",
     "prettier": "prettier --check .",
     "prettier:fix": "prettier --write .",
-    "seed": "tsc && node dist/scripts/seed.js"
+    "seed": "tsc && node dist/scripts/seed.js",
+    "test": "vitest",
+    "test:unit": "vitest run src/tests/unit",
+    "test:integration": "vitest run src/tests/integration"
   },
   "keywords": [],
   "author": "",
@@ -40,15 +43,19 @@
     "@types/jsonwebtoken": "^9.0.10",
     "@types/morgan": "^1.9.10",
     "@types/node": "^25.0.6",
+    "@types/supertest": "^6.0.3",
     "@types/swagger-jsdoc": "^6.0.4",
     "@types/swagger-ui-express": "^4.1.8",
+    "@vitest/coverage-v8": "^4.0.17",
     "eslint": "^9.39.2",
     "globals": "^17.0.0",
     "jsonwebtoken": "^9.0.3",
     "nodemon": "^3.1.11",
     "prettier": "^3.7.4",
+    "supertest": "^7.2.2",
     "ts-node": "^10.9.2",
     "typescript": "^5.9.3",
-    "typescript-eslint": "^8.52.0"
+    "typescript-eslint": "^8.52.0",
+    "vitest": "^4.0.17"
   }
 }

pnpm-workspace.yaml

@@ -1,3 +1,4 @@
 onlyBuiltDependencies:
   - '@scarf/scarf'
   - bcrypt
+  - esbuild

src/tests/integration/orders.test.ts

@@ -0,0 +1,18 @@
+import request from "supertest";
+import { describe, expect, it } from "vitest";
+
+describe("GET /health", () => {
+  it("returns 200 OK", async () => {
+    // Minimal env required by app config during import
+    process.env.MONGO_URI = process.env.MONGO_URI ?? "mongodb://localhost:27017/test";
+    process.env.JWT_SECRET = process.env.JWT_SECRET ?? "test-secret";
+
+    const { default: app } = await import("../../app.js");
+
+    const res = await request(app).get("/health");
+
+    expect(res.status).toBe(200);
+    expect(res.body).toEqual({ status: "OK" });
+  }, 20000);
+});
+

src/tests/unit/order.service.test.ts

@@ -0,0 +1,71 @@
+import { describe, expect, it, vi, beforeEach, afterEach } from "vitest";
+
+import { OrderService } from "../../services/order.service.js";
+import { OrderRepository } from "../../repositories/order.repo.js";
+import { ProductRepository } from "../../repositories/product.repo.js";
+
+vi.mock("mongoose", async (importOriginal) => {
+  const actual = (await importOriginal()) as typeof import("mongoose");
+
+  const startSession = vi.fn().mockResolvedValue({
+    startTransaction: vi.fn(),
+    commitTransaction: vi.fn(),
+    abortTransaction: vi.fn(),
+    endSession: vi.fn(),
+  });
+
+  return {
+    ...actual,
+    default: {
+      ...(actual as any).default,
+      startSession,
+    },
+    startSession,
+  };
+});
+
+vi.mock("../../repositories/order.repo.js");
+vi.mock("../../repositories/product.repo.js");
+
+describe("OrderService", () => {
+  const mockedOrderRepo = vi.mocked(OrderRepository);
+  const mockedProductRepo = vi.mocked(ProductRepository);
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  describe("listOrders", () => {
+    it("lists all orders for admin role", async () => {
+      const orders = [{ id: "1" }];
+      mockedOrderRepo.findAll.mockResolvedValueOnce(orders as never);
+
+      const result = await OrderService.listOrders("user-id", "admin");
+
+      expect(mockedOrderRepo.findAll).toHaveBeenCalledOnce();
+      expect(result).toEqual(orders);
+    });
+
+    it("lists user orders for non-admin role", async () => {
+      const orders = [{ id: "2" }];
+      mockedOrderRepo.findByUser.mockResolvedValueOnce(orders as never);
+
+      const result = await OrderService.listOrders("user-123", "customer");
+
+      expect(mockedOrderRepo.findByUser).toHaveBeenCalledWith("user-123");
+      expect(result).toEqual(orders);
+    });
+  });
+
+  describe("payOrder", () => {
+    it("throws 400 for invalid id", async () => {
+      await expect(OrderService.payOrder(undefined)).rejects.toMatchObject({
+        statusCode: 400,
+      });
+    });
+  });
+});

vitest.config.mts

@@ -0,0 +1,14 @@
+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    environment: "node",
+    globals: true,
+    include: ["src/tests/**/*.test.ts"],
+    coverage: {
+      provider: "v8",
+      reporter: ["text", "html"],
+      reportsDirectory: "./coverage",
+    },
+  },
+});