diff --git a/frontend/src/components/organisms/UserMenu.test.tsx b/frontend/src/components/organisms/UserMenu.test.tsx
new file mode 100644
index 00000000..10553e38
--- /dev/null
+++ b/frontend/src/components/organisms/UserMenu.test.tsx
@@ -0,0 +1,98 @@
+import type {
+  AnchorHTMLAttributes,
+  ImgHTMLAttributes,
+  PropsWithChildren,
+  ReactNode,
+} from "react";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { render, screen } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+
+import { UserMenu } from "./UserMenu";
+
+const useUserMock = vi.hoisted(() => vi.fn());
+const clearLocalAuthTokenMock = vi.hoisted(() => vi.fn());
+const isLocalAuthModeMock = vi.hoisted(() => vi.fn());
+type LinkProps = PropsWithChildren<{
+  href: string | { pathname?: string };
+}> &
+  Omit<AnchorHTMLAttributes<HTMLAnchorElement>, "href">;
+
+vi.mock("next/image", () => ({
+  default: (props: ImgHTMLAttributes<HTMLImageElement>) => (
+    // eslint-disable-next-line @next/next/no-img-element
+    <img {...props} alt={props.alt ?? ""} />
+  ),
+}));
+
+vi.mock("next/link", () => ({
+  default: ({
+    children,
+    href,
+    ...rest
+  }: LinkProps) => (
+    <a href={typeof href === "string" ? href : "#"} {...rest}>
+      {children}
+    </a>
+  ),
+}));
+
+vi.mock("@/auth/clerk", () => ({
+  useUser: useUserMock,
+  SignOutButton: ({ children }: { children: ReactNode }) => children,
+}));
+
+vi.mock("@/auth/localAuth", () => ({
+  clearLocalAuthToken: clearLocalAuthTokenMock,
+  isLocalAuthMode: isLocalAuthModeMock,
+}));
+
+describe("UserMenu", () => {
+  beforeEach(() => {
+    useUserMock.mockReset();
+    clearLocalAuthTokenMock.mockReset();
+    isLocalAuthModeMock.mockReset();
+  });
+  afterEach(() => {
+    vi.unstubAllGlobals();
+  });
+
+  it("renders and opens local-mode menu actions", async () => {
+    const user = userEvent.setup();
+    useUserMock.mockReturnValue({ user: null });
+    isLocalAuthModeMock.mockReturnValue(true);
+
+    render(<UserMenu />);
+
+    await user.click(screen.getByRole("button", { name: /open user menu/i }));
+
+    expect(
+      screen.getByRole("link", { name: /open boards/i }),
+    ).toBeInTheDocument();
+    expect(
+      screen.getByRole("link", { name: /create board/i }),
+    ).toBeInTheDocument();
+    expect(
+      screen.getByRole("button", { name: /sign out/i }),
+    ).toBeInTheDocument();
+  });
+
+  it("clears local auth token and reloads on local sign out", async () => {
+    const user = userEvent.setup();
+    useUserMock.mockReturnValue({ user: null });
+    isLocalAuthModeMock.mockReturnValue(true);
+    const reloadSpy = vi.fn();
+    vi.stubGlobal("location", {
+      ...window.location,
+      reload: reloadSpy,
+    } as Location);
+
+    render(<UserMenu />);
+
+    await user.click(screen.getByRole("button", { name: /open user menu/i }));
+    await user.click(screen.getByRole("button", { name: /sign out/i }));
+
+    expect(clearLocalAuthTokenMock).toHaveBeenCalledTimes(1);
+    expect(reloadSpy).toHaveBeenCalledTimes(1);
+  });
+});