debuts de tests unitaires

jest.setup.js

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+import '@testing-library/jest-dom';
+
+// Mock Next.js router
+jest.mock('next/navigation', () => ({
+  useRouter() {
+    return {
+      push: jest.fn(),
+      replace: jest.fn(),
+      prefetch: jest.fn(),
+      back: jest.fn(),
+      forward: jest.fn(),
+      refresh: jest.fn(),
+    };
+  },
+  useSearchParams() {
+    return new URLSearchParams();
+  },
+  usePathname() {
+    return '/';
+  },
+}));
+
+// Mock Next.js image
+jest.mock('next/image', () => ({
+  __esModule: true,
+  default: (props) => {
+    // eslint-disable-next-line @next/next/no-img-element
+    return <img {...props} />;
+  },
+}));
+
+// Mock Supabase - will be mocked in individual test files
+
+// Mock environment variables
+process.env.NEXT_PUBLIC_SUPABASE_URL = 'https://test.supabase.co';
+process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY = 'test-anon-key';
+
+// Global test utilities
+global.ResizeObserver = jest.fn().mockImplementation(() => ({
+  observe: jest.fn(),
+  unobserve: jest.fn(),
+  disconnect: jest.fn(),
+}));
+
+// Mock window.matchMedia
+Object.defineProperty(window, 'matchMedia', {
+  writable: true,
+  value: jest.fn().mockImplementation(query => ({
+    matches: false,
+    media: query,
+    onchange: null,
+    addListener: jest.fn(), // deprecated
+    removeListener: jest.fn(), // deprecated
+    addEventListener: jest.fn(),
+    removeEventListener: jest.fn(),
+    dispatchEvent: jest.fn(),
+  })),
+});
+
+// Mock IntersectionObserver
+global.IntersectionObserver = jest.fn().mockImplementation(() => ({
+  observe: jest.fn(),
+  unobserve: jest.fn(),
+  disconnect: jest.fn(),
+}));