test: add unit tests for landing privacy page

tests/unit/landing/privacy.test.tsx

@@ -0,0 +1,103 @@
+// @vitest-environment jsdom
+
+import { cleanup, render, screen } from "@testing-library/react";
+import type React from "react";
+import { afterEach, describe, expect, it, vi } from "vitest";
+
+vi.mock("@/components/fade-in", () => ({
+  FadeIn: ({ children }: React.PropsWithChildren) => <div>{children}</div>,
+}));
+
+vi.mock("@/components/footer", () => ({
+  Footer: () => <footer data-testid="footer" />,
+}));
+
+vi.mock("@/components/navbar", () => ({
+  Navbar: () => <nav data-testid="navbar" />,
+}));
+
+const fetchMock = vi.fn().mockResolvedValue({
+  json: () => Promise.resolve({ stargazers_count: 100 }),
+});
+vi.stubGlobal("fetch", fetchMock);
+
+import PrivacyPage from "@landing/app/privacy/page";
+
+afterEach(cleanup);
+
+describe("PrivacyPage", () => {
+  it("renders the page heading", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByText("Privacy Policy")).toBeDefined();
+  });
+
+  it("renders the last updated date", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByText(/Last updated/)).toBeDefined();
+  });
+
+  it("renders the Navbar and Footer", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByTestId("navbar")).toBeDefined();
+    expect(screen.getByTestId("footer")).toBeDefined();
+  });
+
+  it("renders the Overview section", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByText("Overview")).toBeDefined();
+    expect(screen.getByText(/self-hosted software/)).toBeDefined();
+  });
+
+  it("renders all section headings", () => {
+    render(<PrivacyPage />);
+    const headings = [
+      "Overview",
+      "Website (snapotter.com)",
+      "Self-Hosted Software",
+      "Optional Analytics",
+      "Contact Form",
+      "Open Source",
+      "Changes",
+      "Contact",
+    ];
+    for (const heading of headings) {
+      expect(screen.getByText(heading)).toBeDefined();
+    }
+  });
+
+  it("states no tracking cookies are used", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByText("We do not use tracking cookies.")).toBeDefined();
+  });
+
+  it("states all processing happens on user server", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByText("All image processing happens entirely on your server.")).toBeDefined();
+  });
+
+  it("states analytics is disabled by default", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByText("Analytics is disabled by default.")).toBeDefined();
+  });
+
+  it("mentions PostHog for analytics", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByText(/PostHog/)).toBeDefined();
+  });
+
+  it("mentions Formspree for contact form", () => {
+    render(<PrivacyPage />);
+    expect(screen.getAllByText(/Formspree/).length).toBeGreaterThanOrEqual(1);
+  });
+
+  it("renders the contact email link", () => {
+    render(<PrivacyPage />);
+    const emailLink = screen.getByText("contact@snapotter.com");
+    expect(emailLink.closest("a")?.getAttribute("href")).toBe("mailto:contact@snapotter.com");
+  });
+
+  it("states the codebase is open source and inspectable", () => {
+    render(<PrivacyPage />);
+    expect(screen.getByText(/inspect the entire codebase/)).toBeDefined();
+  });
+});