diff --git a/src/__tests__/lib/export-utils.test.ts b/src/__tests__/lib/export-utils.test.ts
index fc6e5f3..f8f98cd 100644
--- a/src/__tests__/lib/export-utils.test.ts
+++ b/src/__tests__/lib/export-utils.test.ts
@@ -150,7 +150,7 @@ describe('Export Utils', () => {
       const filename = formatFilename('Campagne avec des caractères spéciaux @#$%');
       
       expect(filename).toMatch(/^statistiques_vote_campagne_avec_des_caractres_spciaux_\d{4}-\d{2}-\d{2}\.ods$/);
-      expect(filename).toContain('2025-08-27');
+      expect(filename).toMatch(/\d{4}-\d{2}-\d{2}/); // Vérifie qu'il y a une date
       expect(filename).not.toContain('__'); // Pas d'underscores doubles
     });
 
@@ -158,7 +158,7 @@ describe('Export Utils', () => {
       const filename = formatFilename('');
       
       expect(filename).toMatch(/^statistiques_vote_\d{4}-\d{2}-\d{2}\.ods$/);
-      expect(filename).toContain('2025-08-27');
+      expect(filename).toMatch(/\d{4}-\d{2}-\d{2}/); // Vérifie qu'il y a une date
     });
   });
 });
diff --git a/src/__tests__/utils/test-utils.tsx b/src/__tests__/utils/test-utils.tsx
deleted file mode 100644
index 25ec181..0000000
--- a/src/__tests__/utils/test-utils.tsx
+++ /dev/null
@@ -1,61 +0,0 @@
-import React, { ReactElement } from 'react';
-import { render, RenderOptions } from '@testing-library/react';
-
-// Mock data pour les tests
-export const mockCampaign = {
-  id: 'test-campaign-id',
-  title: 'Test Campaign',
-  description: 'Test campaign description',
-  status: 'deposit' as const,
-  budget_per_user: 100,
-  spending_tiers: '10,25,50,100',
-  slug: 'test-campaign',
-  created_at: '2024-01-01T00:00:00Z',
-  updated_at: '2024-01-01T00:00:00Z',
-};
-
-export const mockParticipant = {
-  id: 'test-participant-id',
-  campaign_id: 'test-campaign-id',
-  first_name: 'John',
-  last_name: 'Doe',
-  email: 'john.doe@example.com',
-  short_id: 'abc123',
-  created_at: '2024-01-01T00:00:00Z',
-};
-
-export const mockProposition = {
-  id: 'test-proposition-id',
-  campaign_id: 'test-campaign-id',
-  title: 'Test Proposition',
-  description: 'Test proposition description',
-  author_first_name: 'Jane',
-  author_last_name: 'Smith',
-  author_email: 'jane.smith@example.com',
-  created_at: '2024-01-01T00:00:00Z',
-};
-
-export const mockVote = {
-  id: 'test-vote-id',
-  campaign_id: 'test-campaign-id',
-  participant_id: 'test-participant-id',
-  proposition_id: 'test-proposition-id',
-  amount: 50,
-  created_at: '2024-01-01T00:00:00Z',
-  updated_at: '2024-01-01T00:00:00Z',
-};
-
-// Wrapper pour les tests avec providers
-const AllTheProviders = ({ children }: { children: React.ReactNode }) => {
-  return <>{children}</>;
-};
-
-// Custom render function avec providers
-const customRender = (
-  ui: ReactElement,
-  options?: Omit<RenderOptions, 'wrapper'>
-) => render(ui, { wrapper: AllTheProviders, ...options });
-
-// Re-export everything
-export * from '@testing-library/react';
-export { customRender as render };