Merge pull request #94 from beatz174-bit/codex/add-tests-for-useserviceworker-hook

Add tests for service worker registration hook

src/hooks/__tests__/useServiceWorker.test.tsx

@@ -0,0 +1,58 @@
+import { act, renderHook } from '@testing-library/react';
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import { useServiceWorker } from '../useServiceWorker';
+
+const flushMicrotasks = async () => {
+  await act(async () => {
+    vi.runAllTicks();
+  });
+};
+
+describe('useServiceWorker', () => {
+  beforeEach(() => {
+    vi.useFakeTimers();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+    vi.restoreAllMocks();
+    delete (navigator as any).serviceWorker;
+  });
+
+  it('returns true when service worker registration succeeds', async () => {
+    const registerMock = vi.fn().mockResolvedValue(undefined);
+    (navigator as any).serviceWorker = { register: registerMock };
+
+    const { result } = renderHook(() => useServiceWorker());
+
+    await flushMicrotasks();
+
+    expect(registerMock).toHaveBeenCalledWith('/service-worker.js');
+    expect(result.current).toBe(true);
+  });
+
+  it('returns false when service worker registration fails', async () => {
+    const registerMock = vi.fn().mockRejectedValue(new Error('registration failed'));
+    (navigator as any).serviceWorker = { register: registerMock };
+
+    const { result } = renderHook(() => useServiceWorker());
+
+    await flushMicrotasks();
+
+    expect(registerMock).toHaveBeenCalledWith('/service-worker.js');
+    expect(result.current).toBe(false);
+  });
+
+  it('keeps registration false when service workers are unavailable', async () => {
+    expect('serviceWorker' in navigator).toBe(false);
+
+    const registerMock = vi.fn();
+
+    const { result } = renderHook(() => useServiceWorker());
+
+    await flushMicrotasks();
+
+    expect(result.current).toBe(false);
+    expect(registerMock).not.toHaveBeenCalled();
+  });
+});