CDI-Unit @Produces无法正常工作 [英] CDI-Unit @Produces not working

问题描述

首先，我根据 http://jglue.org/cdi-unit进行了深入搜索-user-guide/生成要注入到单元测试中的东西应该可以正常工作.

First off I googled intensively and according to http://jglue.org/cdi-unit-user-guide/ producing stuff to inject in a unit test should work just fine.

我的设置:

@RunWith(CdiRunner.class)
public abstract class CdiUnitBaseTest extends DBUnitBaseTest {
  @Produces
  public EntityManager em() {
    return em; //field from base class filled @BeforeClass
  }
  @Produces
  public Logger logger() {
    return LogManager.getLogger();
  }
}

public class SurveyBeanTest extends CdiUnitBaseTest {

  @Inject
  private SurveyBean bean;

  @Test
  public void surveyWithoutParticipation() {
    Survey s = new Survey();
    s.setParticipation(new ArrayList<Participation>());
    boolean result = this.bean.hasParticipated("12ST", s);

    Assert.assertFalse(result);
  }
}

@Remote(SurveyRemote.class)
@Stateless
public class SurveyBean implements SurveyRemote {

  @Inject
  private Logger log;
  @Inject
  private SurveyDao sDao;
  @Inject
  private ParticipationDao pDao;

  ...
}

例外:

org.jboss.weld.exceptions.DeploymentException:具有3个例外的例外列表:

org.jboss.weld.exceptions.DeploymentException: Exception List with 3 exceptions:

异常0: org.jboss.weld.exceptions.DeploymentException:WELD-001408:带限定符@Default的Logger类型的依赖关系未得到满足 在注入点[BackedAnnotatedField] @Inject私有at.fhhagenberg.unitTesting.beans.SurveyBean.log ...

Exception 0 : org.jboss.weld.exceptions.DeploymentException: WELD-001408: Unsatisfied dependencies for type Logger with qualifiers @Default at injection point [BackedAnnotatedField] @Inject private at.fhhagenberg.unitTesting.beans.SurveyBean.log ...

这意味着CdiRunner尝试构建我的SurveyBean并注入记录器，但找不到我要注入的对象，尽管我在基类中专门生产了它(EntityManager也是如此).

This means the CdiRunner tries to build my SurveyBean and inject the logger, but it cannot find an object to inject, although I specifically produce it in the base class (same goes for EntityManager).

有人知道如何解决这个问题吗?

Anybody knows how to fix this?

PS:我不允许添加的标签:cdi-unit，jglue

PS: tags I was not allowed to add: cdi-unit, jglue

推荐答案

您需要将生产者方法放入与DBUnitBaseTest分开的类中.此类是抽象的，不能用作CDI生产者. em和logger的生产者方法.

You need to put your producer methods into a separate class from DBUnitBaseTest. This class is abstract and cannot be used as a CDI producer. Both producer methods for em and logger.

这是因为具有生产者方法/字段的类本身必须是CDI bean-该类的实例是在调用生产者方法之前由CDI创建的. CDI无法从抽象类创建bean.另外，@Producer注释不会被继承，因此SurveyBeanTest继承的方法不会被视为生产者.

This is because the class having producer methods/fields must be a CDI bean itself - an instance of that class is created by CDI prior to calling producer methods. And CDI cannot create beans from abstract class. Also, @Producer annotations are not inherited, therefore methods inherited by SurveyBeanTest are not treated as producers.

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