Problem with correct class setting for tests.

I have the following service structure

My service:

Interface

public interface ColumnsFromTableService {
    List<ColumnsDto> getTableColumnsFromSource(DataProvider dataProvider, String tableName);
    DataProviderSourceType  myDataProviderSourceType();
    @Autowired
    default void regMe(ColumnsFromTableFacade columnsFromTableFacade){
        columnsFromTableFacade.register(myDataProviderSourceType(),this);
    }
}

Impl

@Service
@RequiredArgsConstructor
public class OracleColumnsFromTableServiceImpl implements ColumnsFromTableService {
    private final DataProviderInsideDao dataProviderInsideDao;

    @Override
    public List<ColumnsDto> getTableColumnsFromSource(DataProvider dataProvider, String tableName) {
        return dataProviderInsideDao.getColumnsByTableNameFromOracle(dataProvider, tableName);
    }

    @Override
    public DataProviderSourceType myDataProviderSourceType() {
        return DataProviderSourceType.ORACLE;
    }
}

My facade:

Interface

public interface ColumnsFromTableFacade {
    List<ColumnsDto> getTableColumnsFromSource(DataProvider dataProvider, String tableName);
    void register(DataProviderSourceType dataProviderSourceType, ColumnsFromTableService columnsDataProviderService);
}

Impl

@Service
public class ColumnsFromTableFacadeImpl implements ColumnsFromTableFacade {
    private final Map<DataProviderSourceType, ColumnsFromTableService> implementationMap = new HashMap<>();

    @Override
    public List<ColumnsDto> getTableColumnsFromSource(DataProvider dataProvider, String tableName) {
       
        ColumnsFromTableService columnsFromTableService = implementationMap.get(dataProvider.getSourceType());
        return columnsFromTableService.getTableColumnsFromSource(dataProvider,tableName);
     
    }

    @Override
    public void register(DataProviderSourceType dataProviderSourceType, ColumnsFromTableService columnsDataProviderService) {
        implementationMap.put(dataProviderSourceType, columnsDataProviderService);
    }
}

For use, I inject the facade in the place I need.

Everything works in the application. When creating ColumnsFromTableService beans, Spring Boot sees the @Autowired annotation in the interface and and registers the service in the facade. But when testing this facade, I can't set it up correctly.

My test:

@ExtendWith(MockitoExtension.class)
public class EasyServiceTest {

    @InjectMocks
    TablesFromSourceFacadeImpl tablesFromSourceFacade;

    @Test
    void test(){       
        tablesFromSourceFacade.getAllTablesFromSource(new DataProvider());
    }
}

When running the test, the facade is successfully instantiated. But the collection with implementations is empty.

enter image description here

I am using Junit jupiter - 5.7.1 Spring boot - 2.4.3

CodePudding user response：

you have not provided class source code for TablesFromSourceFacadeImpl. So, its difficult to say what beans that class is expecting. but, in general, check this article to understand how @InjectMocks works: https://www.baeldung.com/mockito-annotations

all the beans that you class TablesFromSourceFacadeImpl requires must be declared and mock instances using @Mock annotation. The effect is, all the @Autowired beans are wired with Mock instance that you have reference to in you test file and thus are available for stubbing.

CodePudding user response：

I decided to be rough

@ExtendWith(MockitoExtension.class)
public class EasyServiceTest {
    
    TablesFromSourceFacadeImpl tablesFromSourceFacade;
    @InjectMocks
    OracleTablesFromSourceServiceImpl oracleTablesFromSourceService;
    @InjectMocks
    OracleColumnsFromTableServiceImpl oracleColumnsFromTableService;

    @BeforeEach
    void setUp() {
        tablesFromSourceFacade = new TablesFromSourceFacadeImpl();
        tablesFromSourceFacade.register(postgresTablesFromSourceService.myDataProviderSourceType(),
                                        postgresTablesFromSourceService);
        tablesFromSourceFacade.register(oracleTablesFromSourceService.myDataProviderSourceType(),
                                        oracleTablesFromSourceService);
    }
    @Test
    void test(){       
        tablesFromSourceFacade.getAllTablesFromSource(new DataProvider());
    }
}