public void findPurchasesByCustomerEmail (){
            Book book = Book.builder().isbn("ISBN00001").title("Book Name").price(9.99).author("Manuel").pages(200).provider("provider").build();

            String email = "johndoe@mailinator.com";

            Customer customer = Customer.builder().name("pedro").surname("pajares")
                    .address("avenida palmera45").email(email)
                    .id(1L).build();

            Customer customer2 = Customer.builder().name("pedro").surname("pajares")
                    .address("avenida palmera45").email(email)
                    .id(1L).build();

            Purchase purchase = Purchase
                    .builder()
                    .customer(customer)
                    .price(book.getPrice())
                    .book(book)
                    .paymentMethod(PaymentMethod.PAYPAL)
                    .currency(GBP.toString())
                    .build();
                    purchaseService.save(purchase);
            Purchase purchase2 = Purchase
                    .builder()
                    .customer(customer2)
                    .price(book.getPrice())
                    .book(book)
                    .paymentMethod(PaymentMethod.PAYPAL)
                    .currency(GBP.toString())
                    .build();
            purchaseService.save(purchase);
            purchaseService.save(purchase2);

            List<PurchaseResponseDTO> listPurchasesDTO =Lists.list(PurchaseResponseDTO.fromPurchase(purchase),PurchaseResponseDTO.fromPurchase(purchase2));

            //Given
            given(purchaseFacade.findPurchasesByCustomerEmail(email)).willReturn(listPurchasesDTO);

            //when
            List<PurchaseResponseDTO> purchaseDTOFound =  purchaseFacade.findPurchasesByCustomerEmail(email);

           //Then
           assertAll( "Purchase found",
                    () -> assertThat(purchaseDTOFound, not(IsEmptyCollection.empty())),
                    () -> assertThat(purchaseDTOFound, hasSize(2)),
                    () -> assertTrue(purchaseDTOFound.stream().allMatch(purch -> (PurchaseResponseDTO)purch.ge getPurchase().Getcustomer().getEmail().equals(email) ))
            );
       }