How to make AfterBeanDiscovery get triggered in JUnit

Question

I have the following four classes: DataConsumer, DataProducer, SomeQualifier, a META-INF/beans.xml and a test. The class files are coded as follows:

public class DataConsumer {

private boolean loaded = false;

@Inject
@SomeQualifier
private String someString;

public void afterBeanDiscovery(
        @Observes final AfterBeanDiscovery afterBeanDiscovery,
        final BeanManager manager) {
    loaded = true;
}

public boolean getLoaded() {
    return loaded;
}

public String sayHello() {
    return someString;
}

}

public class DataProducer {

@Produces
@SomeQualifier
private final String sample = "sample";
}

public @interface SomeQualifier {

}

The unit test looks like this.

public class WeldTest {
@Test
public void testHelloWorld() {
    final WeldContainer weld = new Weld().initialize();
    final DataConsumer consumer = weld.instance()
            .select(DataConsumer.class).get();
    Assert.assertEquals("sample", consumer.sayHello());
    Assert.assertTrue(consumer.getLoaded());
}
}

However, it is failing on the assertTrue with getLoaded() it appears that the @Observes does not get fired.

score 0 · Answer 1 · answered May 16 '12 at 02:54

0

Take a look at arquillian: www.arquillian.org. It'll take care of all of this for you.

answered May 16 '12 at 02:54

LightGuard

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19

do you have an example of this working? I just tried it myself and I get the same result. – Archimedes Trajano May 17 '12 at 16:36
Store the boolean in a static variable because the bean will be initialized each time. – LightGuard May 18 '12 at 03:44

score 0 · Accepted Answer · edited May 23 '17 at 11:49

I found a similar question that had answered my question

CDI - Observing Container Events

Although I am unable to use DataConsumer as both an Extension and a CDI managed bean. So it needs a third class just to be the Extension. However, because Extension have no access to managed beans since they are not created yet, I conclude that is no possible solution to use an @Observes AfterBeanDiscovery to modify the bean data. Even the BeanManager that gets passed in cannot find any of the beans.

How to make AfterBeanDiscovery get triggered in JUnit

2 Answers2