new test added for an improper id format

E-Commerce-API/app.js

@@ -298,6 +298,11 @@ app.post("/customers/:customerId", async (req, res) => {
 //Delete an order with all its items
 app.delete("/orders/:orderId", async (req, res) => {
   const orderId = req.params.orderId;
+  if (isNaN(orderId)) {
+    return res
+      .status(400)
+      .json({ error: "Bad request! Order id format is not correct" });
+  }
   try {
     const orderExist = await db.query(
       "SELECT EXISTS (SELECT 1 FROM orders WHERE id=$1) AS order_exist",

E-Commerce-API/tests/products.spec.js

@@ -463,4 +463,14 @@ describe("DELETE /orders/:orderId", () => {
       })
     );
   });
+
+  it("Should return a success message of deletion for the associated order", async () => {
+    const response = await request(app).delete("/orders/badFormat");
+    expect(response.status).toBe(400);
+    expect(response.body).toEqual(
+      expect.objectContaining({
+        error: "Bad request! Order id format is not correct",
+      })
+    );
+  });
 });