[英]What can be unit tested in this Java method involving pagination of data?
單元測試的初學者。 以下是要測試的方法 -
public ListBeneficiaryResponseDTO getBeneficiaryOfMerchants(Long merchantId, Integer page, Integer pageSize,
String sortDirection, String sortField) {
LOGGER.info("Inside getBeneficiaryOfMerchants method");
// default we are setting to added on desc sort
Sort sort = Sort.by(Sort.Direction.DESC,"addedOn");
if(sortField != null && sortDirection != null) {
sort = Sort.by(Sort.Direction.fromString(sortDirection),sortField);
}
Pageable pageRequest = PageRequest.of(page-1, pageSize, sort);
Page<Beneficiary> pageOfBeneficiaries = beneficiaryRepository.findAllByMerchantId(merchantId, pageRequest);
List<BeneficiaryResponseDTO> benResonseDtoList = new ArrayList<BeneficiaryResponseDTO>();
for( Beneficiary ben: pageOfBeneficiaries.getContent()) {
benResonseDtoList.add(this.getBeneficiaryResponseDTO(ben));
}
ListBeneficiaryResponseDTO formattedListBen = new ListBeneficiaryResponseDTO(pageOfBeneficiaries.getTotalPages(),pageOfBeneficiaries.getTotalElements(),pageOfBeneficiaries.getNumber(),benResonseDtoList);
return formattedListBen;
}
為了編寫測試,我想,考慮到底層方法調用工作正常,這個方法會做錯什么。 好吧,我不確定,但將元素放入列表中可能會出現一些錯誤。
因此,我想編寫一個測試來確保列表 benResonseDtoList 中存在預期數量的元素。
以下是我嘗試過的 -
@Test
public void testGetBeneficiariesOfMerchant() throws Exception {
Long merchantId = 2l;
List<Beneficiary> beneficiaryList = new ArrayList<Beneficiary>();
beneficiaryList.add(getBeneficiaryDto());
beneficiaryList.add(getBeneficiaryDto());
Page<Beneficiary> beneficiaries = new PageImpl<Beneficiary>(beneficiaryList); //But I am not sure how many entries are there in the page created.
Mockito.when(beneficiaryRepository.findAllByMerchantId(any(),any())).thenReturn(beneficiaries);
KeyManager keyManager = Mockito.mock(KeyManager.class);
ListBeneficiaryResponseDTO list = beneficiaryService.getBeneficiaryOfMerchants(merchantId,1,2, "DESC","addedOn");
如果 beneficiaryList 中的元素數量與 pageOfBeneficiaries 中的條目之間存在明顯的相關性,我可以對其進行測試。
如果我正確理解您的問題,您想知道getBeneficiaryOfMerchants()
function 的測試場景,因為下划線功能正常工作。
對於給定的
MercerId, page, pageSize, sortDirection, sortField
ListBeneficiaryResponseDTO 將被修復,我們稱之為 ListBeneficiaryResponseDTO expectedList (您必須構建它,因為您已經知道正確的輸出)
因此,您應該比較以下內容:-
實際 Output:
ListBeneficiaryResponseDTO actualList = beneficiaryService.getBeneficiaryOfMerchants(merchantId,1,2, "DESC","addedOn");
預期 Output: ListBeneficiaryResponseDTO 預期列表(已在上面定義)
比較兩個輸出: -
逐個字段比較actualList和expectedList
覆蓋 ListBeneficiaryResponseDTO 類的 Equals 方法(或者您可以使用 lombok.EqualsAndHashCode 來避免樣板代碼)並執行以下操作:- assertEquals(**actualList**, **expectedList**)
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