[英]What can be unit tested in this Java method involving pagination of data?
单元测试的初学者。 以下是要测试的方法 -
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;
}
为了编写测试,我想,考虑到底层方法调用工作正常,这个方法会做错什么。 好吧,我不确定,但将元素放入列表中可能会出现一些错误。
因此,我想编写一个测试来确保列表 benResonseDtoList 中存在预期数量的元素。
以下是我尝试过的 -
@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 中的元素数量与 pageOfBeneficiaries 中的条目之间存在明显的相关性,我可以对其进行测试。
如果我正确理解您的问题,您想知道getBeneficiaryOfMerchants()
function 的测试场景,因为下划线功能正常工作。
对于给定的
MercerId, page, pageSize, sortDirection, sortField
ListBeneficiaryResponseDTO 将被修复,我们称之为 ListBeneficiaryResponseDTO expectedList (您必须构建它,因为您已经知道正确的输出)
因此,您应该比较以下内容:-
实际 Output:
ListBeneficiaryResponseDTO actualList = beneficiaryService.getBeneficiaryOfMerchants(merchantId,1,2, "DESC","addedOn");
预期 Output: ListBeneficiaryResponseDTO 预期列表(已在上面定义)
比较两个输出: -
逐个字段比较actualList和expectedList
覆盖 ListBeneficiaryResponseDTO 类的 Equals 方法(或者您可以使用 lombok.EqualsAndHashCode 来避免样板代码)并执行以下操作:- assertEquals(**actualList**, **expectedList**)
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