单元测试查询dsl绑定

Question

我有以下使用查询dsl绑定的存储库

public interface StatusRepository extends
PagingAndSortingRepository<Status, Long>,
QuerydslPredicateExecutor<Status>,
QuerydslBinderCustomizer<QStatus> {

@Override
default void customize(QuerydslBindings bindings, @NotNull QStatus root) {
bindings.bind(String.class).first((StringPath path, String value) -> 
path.likeIgnoreCase(value.replace("_", "[_]")));
}

我正在为customize方法编写单元测试，遇到了困难

@Test
public void customize() {
QuerydslBindings bindings = mock(QuerydslBindings.class);
QStatus qstatus = mock(QStatus.class);
QuerydslBindings.TypeBinder mock = 
PowerMockito.mock(QuerydslBindings.TypeBinder.class);
when(bindings.bind(String.class)).thenReturn(mock);

statusRepository.customize(bindings, qstatusGroup);
} 
Cannot mock/spy class org.springframework.data.querydsl.binding.QuerydslBindings$TypeBinder
Mockito cannot mock/spy because :
- final class

我使用powermockito模拟QuerydslBindings。TypeBinder但是它仍然说它不能被模拟

Answer 1

查看QuerydslPredicateArgumentResolver Spring如何与binder一起工作

这个想法是直接使用绑定器并检查生成的谓词

@Test
void binding() {
var predicateBuilder = new QuerydslPredicateBuilder(new DefaultConversionService(), SimpleEntityPathResolver.INSTANCE);
var type = ClassTypeInformation.from(Status.class);
var binder = new QuerydslBindingsFactory(SimpleEntityPathResolver.INSTANCE)
.createBindingsFor(type, StatusCustomizer.class);
var query = new LinkedMultiValueMap<String, String>();
query.add("param", "value");

Predicate predicate = predicateBuilder.getPredicate(type, query, binder);
System.out.println(predicate.toString());
}