Unit testing QueryBuilder and Query

Question

What is the proper way to unit test QueryBuilder and Query?  Can I feed in mock data to the AemContext and have QueryBuilder execute against it?
 
Are there any examples or best practices that can be followed?

Saravanan_Dharmaraj · Accepted Answer

Do you have the unit test class with these annotations?

@ExtendWith({ AemContextExtension.class, MockitoExtension.class })
@MockitoSettings(strictness = Strictness.LENIENT)
class UnitTest {
}

The same code works for me.

Saravanan_Dharmaraj · Answer

Some sample code to start with

    public static final String BASE_PAGE_PATH = "/content/we.retail/en";
    AemContext aemContext = new AemContext(ResourceResolverType.JCR_MOCK);

    @Mock
    private QueryBuilder queryBuilder;

    @Mock
    private Query query;

    @Mock
    private SearchResult searchResult;


@BeforeEach
    void setUp() throws Exception{
        aemContext.registerService(QueryBuilder.class, queryBuilder);
        aemContext.load().json("/page.json", BASE_PAGE_PATH);
        configureQueryBuilder();

    }

public void configureQueryBuilder() throws Exception {

        final List<Resource> results = new ArrayList<>();
        Resource pageResult1 = mock(Resource.class);
        Resource pageResult2 = mock(Resource.class);
        pageResult1 = aemContext.resourceResolver().getResource(BASE_PAGE_PATH+"/page1");
        pageResult2 = aemContext.resourceResolver().getResource(BASE_PAGE_PATH+"/page1");
        results.add(pageResult1);
        results.add(pageResult2);
        // More Generic mock of querybuilder calls
        lenient().when(queryBuilder.createQuery(any(PredicateGroup.class), any(Session.class))).thenReturn(query);
        lenient().when(query.getResult()).thenReturn(searchResult);
        lenient().when(searchResult.getResources()).thenReturn(results.iterator());
    }

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