tests added for order

src/components/Order/Order.test.jsx

@@ -0,0 +1,23 @@
+import { describe, expect, it } from "vitest";
+import Order from "./Order";
+import { render, screen, fireEvent } from "@testing-library/react";
+
+describe("Order", () => {
+  it("is still rendered on the page", () => {
+    render(<Order />);
+
+    const ordersText = screen.getByText("Orders: 0");
+
+    expect(ordersText).toBeInTheDocument();
+  });
+
+  it("button still increases the number of orders", () => {
+    render(<Order />);
+
+    const addButton = screen.getByText("Add");
+    fireEvent.click(addButton);
+    const updatedPizzaText = screen.getByText("Orders: 1");
+
+    expect(updatedPizzaText).toBeInTheDocument();
+  });
+});