Refactor: Update FlyerCountDisplay tests to use useFlyers hook and FlyersProvider

src/services/db/flyer.db.test.ts

@@ -448,17 +448,18 @@ describe('Flyer DB Service', () => {
   describe('deleteFlyer', () => {
     it('should use withTransaction to delete a flyer', async () => {
       // Create a mock client that we can reference both inside and outside the transaction mock.
-      const mockClient = { query: vi.fn() };
+      const mockClientQuery = vi.fn();
 
       vi.mocked(withTransaction).mockImplementation(async (callback) => {
-        (mockClient.query as Mock).mockResolvedValueOnce({ rowCount: 1 });
+        const mockClient = { query: mockClientQuery };
+        mockClientQuery.mockResolvedValueOnce({ rowCount: 1 });
         return callback(mockClient as unknown as PoolClient);
       });
 
       await flyerRepo.deleteFlyer(42, mockLogger);
 
       expect(withTransaction).toHaveBeenCalledTimes(1);
-      expect(mockClient.query).toHaveBeenCalledWith('DELETE FROM public.flyers WHERE flyer_id = $1', [42]); // This was a duplicate, fixed.
+      expect(mockClientQuery).toHaveBeenCalledWith('DELETE FROM public.flyers WHERE flyer_id = $1', [42]);
     });
 
     it('should throw an error if the flyer to delete is not found', async () => {