有没有办法用嵌套的Mapper对Mapstruct进行单元测试？
有没有办法用嵌套的Mapper对Mapstruct进行单元测试？
提问于 2021-12-23 12:01:33
我试图按以下方式对Mapstruct嵌套映射程序进行单元测试：
@Mapper(componentModel = "spring", uses = EventCategoryMapper.class, injectionStrategy = InjectionStrategy.CONSTRUCTOR)
public interface EventMapper {
Event fromEventMO(EventMO eventMO);
EventMO toEventMO(Event event);
default Optional<Event> fromOptionalEventMO(Optional<EventMO> optionalEventMO) {
return (optionalEventMO.isEmpty()) ? Optional.empty() : Optional.of(fromEventMO(optionalEventMO.get()));
}
}@Mapper(componentModel = "spring", injectionStrategy = InjectionStrategy.CONSTRUCTOR)
public interface EventCategoryMapper {
EventCategory fromEventCategoryMO(EventCategoryMO eventCategoryMO);
EventCategoryMO toEventCategoryMO(EventCategory eventCategory);
default String fromPriorityMO(PriorityMO priority) {
return (priority.getPriority()==null) ? null : priority.getPriority();
}我正在试着测试EventMapper：
@ExtendWith(SpringExtension.class)
@ContextConfiguration(classes = {EventMapper.class, EventCategoryMapper.class, EventMapperImpl.class, EventCategoryMapperImpl.class})
public class EventMapperTest {
private Mocks mocks; //This object contains the mocked objects that should be mapped.
@Autowired
private EventMapper eventMapper;
@Test
@DisplayName("Should return an Event from an EventMO")
void shouldReturnEventfromEventMO() {
var event = eventMapper.fromEventMO(mocks.getEventMO());
assertEquals(event.getId(), 123L);
}但它仍然失败，因为：
创建名为‘eventMapper’的bean时出错:实例化bean失败；嵌套异常是org.springframework.beans.BeanInstantiationException:未能实例化com.mycompany.cna.projects.fishmarket.back.events.repositories.mappers.event.EventMapper:指定的类是接口
我已经尝试过用Mapper.getMapper(EventMapper.class)实例化映射器，它返回了一个NullPointerException。
我应该怎么做才能在这种映射器上实现单元测试？
回答 1
Stack Overflow用户
回答已采纳
发布于 2021-12-23 15:59:15
我已经解决了这个问题。问题是我没有实例化我的Mocks对象。我还在a方法中向EventMapperImpl提供了嵌套映射程序的模拟：
@ExtendWith(SpringExtension.class)
public class EventMapperTest {
private Mocks mocks;
private EventMapper eventMapper;
@Mock
private EventCategoryMapper eventCategoryMapper;
@BeforeEach
void before() {
eventMapper = new EventMapperImpl(eventCategoryMapper);
mocks = new Mocks();
}
@Test
@DisplayName("Should return an Event from an EventMO")
void shouldReturnEventfromEventMO() {
when(eventCategoryMapper.fromEventCategoryMO(any(EventCategoryMO.class))).thenReturn(mocks.getEventCategory());
var event = eventMapper.fromEventMO(mocks.getEventMO());
assertEquals(event.getId(), 123L);
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/70461891
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