test: write render tests for dashboard

Author: Eric-Zhang-Developer

src/app/dashboard/__tests__/page.test.tsx

@@ -0,0 +1,62 @@
+import { vi } from "vitest";
+import { render, screen } from "@testing-library/react";
+import { describe, it, expect, beforeEach } from "vitest";
+import DashboardPage from "../page";
+
+// Mock next/navigation to prevent redirect calls
+vi.mock("next/navigation", () => ({
+  redirect: vi.fn(),
+}));
+
+// Mock Supabase server client to return a fake authenticated user
+vi.mock("../../../lib/supabase/server", () => ({
+  createClient: vi.fn(async () => ({
+    auth: {
+      getUser: vi.fn(async () => ({
+        data: {
+          user: {
+            email: "[email protected]",
+            id: "test-user-id",
+          },
+        },
+      })),
+      signOut: vi.fn(),
+    },
+  })),
+}));
+
+describe("Dashboard Page Tests", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it("should render the dashboard heading", async () => {
+    const page = await DashboardPage();
+    render(page);
+    expect(screen.getByText("Dashboard")).toBeInTheDocument();
+  });
+
+  it("should display the user email", async () => {
+    const page = await DashboardPage();
+    render(page);
+    expect(screen.getByText("[email protected]")).toBeInTheDocument();
+  });
+
+  it("should render the home link", async () => {
+    const page = await DashboardPage();
+    render(page);
+    expect(screen.getByRole("link", { name: /Go home/i })).toBeInTheDocument();
+  });
+
+  it("should render the logout button", async () => {
+    const page = await DashboardPage();
+    render(page);
+    expect(screen.getByRole("button", { name: /Log out/i })).toBeInTheDocument();
+  });
+
+  it("should render the tutorial link", async () => {
+    const page = await DashboardPage();
+    render(page);
+    expect(screen.getByRole("link", { name: /Hello World Tutorial/i })).toBeInTheDocument();
+  });
+});