I want to test my delete method in PersonDao class.
public class PersonDao {
private EntityManager em;
Person person1 = new Person(111, "Klara", "Bamp", "qwerty123");
public PersonDao() {
}
public PersonDao(EntityManager em) {
this.em = em;
}
public void delete(Person p) {
em.remove(p);
}
}
That's my test class:
public class UnitTests {
#Mock
EntityManager entityManagerMock;
#Before
public void init() {
MockitoAnnotations.initMocks(this);
}
#Test
public void deletePersonTestWithMockito() {
//ARRANGE
PersonDao personDao = new PersonDao(entityManagerMock);
when(entityManagerMock.find(Person.class, person1.getId())).thenReturn(person1);
//ACT
personDao.delete(person1);
//ASSERT
verify(entityManagerMock, times(1)).remove(person1);
assertNull(entityManagerMock.find(Person.class, person1.getId()));
}
I realize, that personDao.delete(person1) does nothing, bcs I did not specify what entityManagerMock.remove should do. I tried to specify it as
when(entityManagerMock.remove(person1)).thenCallRealMethod();, but I received an error Required type: T; Provided: void
Related
#ExtendWith(SpringExtension.class)
#WebFluxTest(controllers = EventsControllerTest.class)
class EventsControllerTest {
#MockBean
UserRepo repo;
#Autowired
private WebTestClient webClient;
#Test
void testAssignUserRoles() {
UserInfo user = new UserInfo();
user.setId(Long.valueOf(1));
user.setFirstname("Test");
user.setLastname("Test2");
user.setActiveuser(true);
user.setEmailid("tet#test.com");
user.setRolename("test");
user.setUserpassword("test");
Mockito.when(repo.save(user)).thenReturn(Mono.just(user));
webClient.post().uri("/assignRoles").contentType(MediaType.APPLICATION_JSON)
.body(BodyInserters.fromObject(user)).exchange().expectStatus().isCreated();
Mockito.verify(repo, times(1)).save(user);
}
Controller
#RestController
public class EventsController {
#Autowired
UserInfoRepository userInfoRepository;
#PostMapping(value = "/saveRole")
public Mono<UserInfo> assignUserRoles(#RequestBody UserInfo userInfo) {
return userInfoRepository.save(userInfo).log();
}
Access URI should match value attribute of #PostMapping: saveRole.
I saw a method of using #inject annotation with parameter constructor. I found no use in #module in all parts of the project. I don't understand how this code injects or provides parameters in the constructor.
Can you help me analyze it?
Where is the datamanager provided?
In the whole project, #module + #provide is not used to provide datamanager. I only know that #inject can only annotate the parameterless constructor. I don't know where to instantiate the parameterless datamanager object. Thank you for your help
application:
public class Scallop extends Application {
private ApplicationComponent applicationComponent;
#Override
public void onCreate() {
super.onCreate();
applicationComponent = DaggerApplicationComponent.builder()
.applicationModule(new ApplicationModule(this))
.build();
}
public ApplicationComponent getApplicationComponent() {
return applicationComponent;
}
}
application module:
#Module
public class ApplicationModule {
private Scallop application;
public ApplicationModule(Scallop application) { // 提供类的构造器，传入Applicaton
this.application = application;
}
#Provides
#Singleton
Application provideApplication() {
return application;
}
#Provides
#ApplicationContext
Context provideContext() {
return application;
}
#Provides
#Singleton
Retrofit provideRetrofit() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(Constants.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(RxJava2CallAdapterFactory.create())
.build();
return retrofit;
}
#Provides
#Singleton
GankIOService provideGankIOService(Retrofit retrofit) {
return retrofit.create(GankIOService.class);
}
}
#Singleton
#Component(modules = ApplicationModule.class)
public interface ApplicationComponent {
Application getApplication();
DataManager getDataManager();
}
```
one class:
#Singleton
public class DataManager {
private GankIOService gankIOService;
private PreferencesHelper preferencesHelper;
#Inject
public DataManager(GankIOService gankIOService, PreferencesHelper preferencesHelper) {
this.gankIOService = gankIOService;
this.preferencesHelper = preferencesHelper;
}
}
fragment module:
#FragmentScope
#Component(modules = FragmentModule.class, dependencies = ApplicationComponent.class)
public interface FragmentComponent {
void inject(HomeFragment homeFragment);
void inject(GanHuoPageFragment pageFragment);
void inject(XianDuFragment xianDuFragment);
void inject(XianDuPageFragment xianDuPageFragment);
void inject(PicturesFragment picturesFragment);
void inject(MoreFragment moreFragment);
}
#FragmentScope
#Documented
#Scope
#Retention(value = RetentionPolicy.RUNTIME)
public #interface FragmentScope {
}
```
here Can't understand constructor with parameter is #inject
public class GanHuoPagePresenter extends BasePresenter<GanHuoPageContract.View>
implements GanHuoPageContract.Presenter {
private DataManager dataManager;
private Disposable disposable;
#Inject
public GanHuoPagePresenter(DataManager dataManager) { // here here
this.dataManager = dataManager;
}
#Override
public void detachView() {
super.detachView();
if (disposable != null) {
disposable.dispose();
}
}
#Override
public void getGanHuo(String category, final int page) {
final List<GanHuo> ganHuoList = new ArrayList<>();
Observable<BaseResponse<GanHuo>> observable = dataManager.getGanHuo(category, page);
disposable = observable.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.concatMap(new Function<BaseResponse<GanHuo>, ObservableSource<GanHuo>>() {
#Override
public ObservableSource<GanHuo> apply(#NonNull BaseResponse<GanHuo> ganHuoBaseResponse)
throws Exception {
return Observable.fromIterable(ganHuoBaseResponse.getResults());
}
}).filter(new Predicate<GanHuo>() {
#Override
public boolean test(#NonNull GanHuo ganHuo) throws Exception {
return !ganHuo.getType().equals("福利");
}
}).subscribe(new Consumer<GanHuo>() {
#Override
public void accept(GanHuo ganHuo) throws Exception {
ganHuoList.add(ganHuo);
}
}, new Consumer<Throwable>() {
#Override
public void accept(Throwable throwable) throws Exception {
getView().showError(throwable.getMessage());
}
}, new Action() {
#Override`enter code here`
public void run() throws Exception {
getView().showList(ganHuoList, page);
}
});
}
}
This is how it is used in V in MVP mode：
#Inject GanHuoPagePresenter presenter
That's constructor injection. By marking a constructor with #Inject Dagger knows about the object and can create it when needed. There's no need for modules, e.g. the following is a valid Dagger setup to create some Foo.
public class Foo {
#Inject
public Foo() {}
}
#Component
interface MyComponent {
Foo getFoo();
}
That's not true that #Inject can only annotate the parameterless constructor. From documentation
Injectable constructors are annotated with #Inject and accept zero or more dependencies as arguments.
I found "your" project on Github so let's see where dependencies for GanHuoPagePresenter come from.
#Inject
public GanHuoPagePresenter(DataManager dataManager) {
this.dataManager = dataManager;
}
#Inject
public DataManager(GankIOService gankIOService,PreferencesHelper preferencesHelper){
// gankIOService is provided by ApplicationModule and preferencesHelper uses constructor injection
this.gankIOService = gankIOService;
this.preferencesHelper = preferencesHelper;
}
#Inject
public PreferencesHelper(#ApplicationContext Context context){
// context is provided again by ApplicationModule
sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
}
I'm trying to implement domain event publishing from an entity by following the examples mentioned on the post below:
Example for #DomainEvents and #AfterDomainEventsPublication
However I haven't managed to have Spring calling my method annotated with #TransactionalEventListener.
See below the entity, service, event listener and test code:
#Entity
public class Book extends AbstractAggregateRoot<Book>
{
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
#Column(unique = true)
private String isbn;
#Column
private String name;
public Book(String isbn, String name)
{
this.isbn = isbn;
this.name = name;
}
public void purchase()
{
registerEvent(new BookPurchasedEvent(id));
}
// getters omitted for brevity
}
Service:
#Service
#Transactional
public class BookService
{
private final BookRepository bookRepository;
public BookService(BookRepository bookRepository)
{
this.bookRepository = bookRepository;
}
public void purchaseBook(Integer bookId)
{
Book book = bookRepository.findById(bookId)
.orElseThrow(NoSuchElementException::new);
book.purchase();
bookRepository.save(book);
}
}
Listener:
#Service
public class EventListener
{
private final Logger logger = LoggerFactory.getLogger(this.getClass());
#TransactionalEventListener
public void handleEvent(BookPurchasedEvent event)
{
logger.info("Received event {}", event);
}
}
Test:
#RunWith(SpringRunner.class)
#SpringBootTest
#Transactional
public class BookEventsTest
{
#Autowired
private BookService bookService;
#Autowired
private EntityManager entityManager;
#Test
public void test()
{
Book book = new Book("abcd-efgh", "El Quijote");
book = entityManager.merge(book);
bookService.purchaseBook(book.getId());
}
}
The log message from the listener is not logged. It works though when deployed as a REST service and invoked e.g. via Postman
Got it. Since my test is annotated with #Transactional, the transaction wrapping the test method will be rolled back. Therefore the method annotated with #TransactionalEventListener won't be called, since by default it triggers at the phase TransactionPhase.AFTER_COMMIT (and I'm not interested in having it called unless the transaction is successful). So the working version of the test looks as follows:
#RunWith(SpringRunner.class)
#SpringBootTest
public class BookEventsTest
{
#Autowired
private BookService bookService;
#Autowired
private BookRepository bookRepository;
#MockBean
private EventListener eventListener;
private Book book;
#Before
public void init() {
book = bookRepository.save(new Book("abcd-efgh", "El Quijote"));
}
#After
public void clean() {
bookRepository.deleteAll();
}
#Test
public void testService()
{
bookService.purchaseBook(book.getId());
then(eventListener)
.should()
.handleEvent(any(BookPurchasedEvent.class));
}
}
I want to create a remote EJB for an entity class. Is there a way of implementing a method with one parameter beign an object of a class that specifically has the #Entity annotation? The purpose of this, is to create just one bean for all my entities.
Example:
public void save(Entity ent){
em.persist(ent);
}
If you just have 1 ejb for all entities you will soon run into problems when you have to handle some of them in a special way.
But you can do like this with an abstract super-ejb, and still have 1 ejb per entity, but its very easy to create. And you can still overwrite the default, inherited methods.
public abstract class AbstractEjb<T> {
private Class<T> entityClass;
public AbstractEjb(Class<T> entityClass) {
this.entityClass = entityClass;
}
protected abstract EntityManager getEntityManager();
public void create(T entity) {
getEntityManager().persist(entity);
}
public void edit(T entity) {
getEntityManager().merge(entity);
}
public void remove(T entity) {
getEntityManager().remove(getEntityManager().merge(entity));
}
public T find(Object id) {
return getEntityManager().find(entityClass, id);
}
public List<T> findAll() {
javax.persistence.criteria.CriteriaQuery cq = getEntityManager().getCriteriaBuilder().createQuery();
cq.select(cq.from(entityClass));
return getEntityManager().createQuery(cq).getResultList();
}
public List<T> findRange(int[] range) {
javax.persistence.criteria.CriteriaQuery cq = getEntityManager().getCriteriaBuilder().createQuery();
cq.select(cq.from(entityClass));
javax.persistence.Query q = getEntityManager().createQuery(cq);
q.setMaxResults(range[1] - range[0] + 1);
q.setFirstResult(range[0]);
return q.getResultList();
}
public int count() {
javax.persistence.criteria.CriteriaQuery cq = getEntityManager().getCriteriaBuilder().createQuery();
javax.persistence.criteria.Root<T> rt = cq.from(entityClass);
cq.select(getEntityManager().getCriteriaBuilder().count(rt));
javax.persistence.Query q = getEntityManager().createQuery(cq);
return ((Long) q.getSingleResult()).intValue();
}
}
To implement for an entity just do
#Stateless
public class TestEjb extends AbstractEjb<TestEntity> {
#PersistenceContext(unitName = "...")
private EntityManager em;
public TestEjb() {
super(TestEntity.class);
}
public EntityManager getEntityManager() {
return em;
}
}
Source: Generate JSF pages from entity classes in Netbeans.
I am working on an ASP.NET WebAPI using OWIN. To manage the instances of DBContext (Entity Framework), I try to use Ninject. However, when I call a controller, the programm returns an error:
The controller cannot be created, missing constructor.
Could you tell me what is going wrong here?
My Controller Class:
public class Testcontroller
{
private IApplicationDbContext _context;
public Testcontroller(IApplicationDbContext context)
{
_context = context;
}
}
This is the Ninject-File:
public static class NinjectWebCommon
{
private static readonly Bootstrapper bootstrapper = new Bootstrapper();
public static void Start()
{
DynamicModuleUtility.RegisterModule(typeof(OnePerRequestHttpModule));
DynamicModuleUtility.RegisterModule(typeof(NinjectHttpModule));
bootstrapper.Initialize(CreateKernel);
}
public static void Stop()
{
bootstrapper.ShutDown();
}
private static IKernel CreateKernel()
{
var kernel = new StandardKernel();
try
{
kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel);
kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>();
kernel.Bind<IApplicationDbContext>().To<ApplicationDbContext>();
GlobalConfiguration.Configuration.DependencyResolver = new NinjectDependencyResolver(kernel);
RegisterServices(kernel);
return kernel;
}
catch
{
kernel.Dispose();
throw;
}
}
private static void RegisterServices(IKernel kernel)
{
}
}
Ninject Dependency Scope:
public class NinjectDependencyScope : IDependencyScope
{
IResolutionRoot resolver;
public NinjectDependencyScope(IResolutionRoot resolver)
{
this.resolver = resolver;
}
public object GetService(Type serviceType)
{
if (resolver == null)
throw new ObjectDisposedException("this", "This scope has been disposed");
return resolver.TryGet(serviceType);
}
public System.Collections.Generic.IEnumerable<object> GetServices(Type serviceType)
{
if (resolver == null)
throw new ObjectDisposedException("this", "This scope has been disposed");
return resolver.GetAll(serviceType);
}
public void Dispose()
{
IDisposable disposable = resolver as IDisposable;
if (disposable != null)
disposable.Dispose();
resolver = null;
}
}
// This class is the resolver, but it is also the global scope
// so we derive from NinjectScope.
public class NinjectDependencyResolver : NinjectDependencyScope, IDependencyResolver
{
IKernel kernel;
public NinjectDependencyResolver(IKernel kernel) : base(kernel)
{
this.kernel = kernel;
}
public IDependencyScope BeginScope()
{
return new NinjectDependencyScope(kernel.BeginBlock());
}
}
The Entity Framework DbContext-Class:
public class ApplicationDbContext : IdentityDbContext<ApplicationUser>, IApplicationDbContext
{
public ApplicationDbContext()
: base("DefaultConnection", throwIfV1Schema: false)
{
Configuration.ProxyCreationEnabled = false;
Configuration.LazyLoadingEnabled = false;
}
public virtual DbSet<Models.Team> Teams { get; set; }
public static ApplicationDbContext Create()
{
return new ApplicationDbContext();
}
}
public interface IApplicationDbContext
{
DbSet<Models.Team> Teams { get; set; }
int SaveChanges();
Task<int> SaveChangesAsync(CancellationToken cancellationToken);
}
I tried to follow this tutorial: http://www.peterprovost.org/blog/2012/06/19/adding-ninject-to-web-api
What have I done wrong here?
Thanks in advance!
Unless there was a serious omission in you controller code, your controller is not inheriting from ApiController, as is expected with Web Api
public class TestController : ApiController {
private IApplicationDbContext _context;
public Testcontroller(IApplicationDbContext context) {
_context = context;
}
}
UPDATE
I tried to set up everything from scratch using this: http://www.alexzaitzev.pro/2014/11/webapi2-owin-and-ninject.html
For some reason, it now works out perfectly fine.
Thank you for your support!