feat: amélioration majeure des tests - ajout de 45 nouveaux tests et correction des erreurs de linting

src/__tests__/components/ErrorDisplay.test.tsx

@@ -0,0 +1,63 @@
+import React from 'react';
+import { render, screen } from '@testing-library/react';
+import '@testing-library/jest-dom';
+import { ErrorDisplay } from '../../components/base/ErrorDisplay';
+
+describe('ErrorDisplay', () => {
+  it('should render error message when error is provided', () => {
+    const error = 'Une erreur est survenue';
+    render(<ErrorDisplay error={error} />);
+
+    expect(screen.getByText('Une erreur est survenue')).toBeInTheDocument();
+    expect(screen.getByText('Une erreur est survenue')).toHaveClass('text-red-600');
+  });
+
+  it('should not render when no error is provided', () => {
+    render(<ErrorDisplay error="" />);
+
+    expect(screen.queryByText('Une erreur est survenue')).not.toBeInTheDocument();
+  });
+
+  it('should not render when error is null', () => {
+    render(<ErrorDisplay error={null} />);
+
+    expect(screen.queryByText('Une erreur est survenue')).not.toBeInTheDocument();
+  });
+
+  it('should not render when error is undefined', () => {
+    render(<ErrorDisplay error={undefined} />);
+
+    expect(screen.queryByText('Une erreur est survenue')).not.toBeInTheDocument();
+  });
+
+  it('should handle long error messages', () => {
+    const longError = 'A'.repeat(500);
+    render(<ErrorDisplay error={longError} />);
+
+    expect(screen.getByText(longError)).toBeInTheDocument();
+  });
+
+  it('should handle special characters in error message', () => {
+    const specialError = 'Erreur avec des caractères spéciaux: @#$%^&*()_+{}|:"<>?[]\\;\',./';
+    render(<ErrorDisplay error={specialError} />);
+
+    expect(screen.getByText(specialError)).toBeInTheDocument();
+  });
+
+  it('should handle HTML in error message', () => {
+    const htmlError = '<script>alert("xss")</script>Erreur avec HTML';
+    render(<ErrorDisplay error={htmlError} />);
+
+    expect(screen.getByText(htmlError)).toBeInTheDocument();
+    // Vérifier que le HTML n'est pas interprété
+    expect(screen.queryByText('xss')).not.toBeInTheDocument();
+  });
+
+  it('should have proper accessibility attributes', () => {
+    const error = 'Erreur d\'accessibilité';
+    render(<ErrorDisplay error={error} />);
+
+    const errorElement = screen.getByText(error);
+    expect(errorElement).toHaveAttribute('role', 'alert');
+  });
+});