Getting "Stack must not be null" error when running a test

[ejbengine]

The code for my test is :

public class FindClaimTest extends SeamTest {

 @Test
 public void testFindUnregisteredClaims() throws Exception {
 new ComponentTest() {

 protected void testComponents() throws Exception {
 invokeMethod("#{registrationFinder.find}");
 }

 }.run();
 }
}

However, when this test runs , its failing with the message

"javax.el.ELException: javax.ejb.EJBException: java.lang.IllegalArgumentException: Stack must not be null"

The full stacktrace is shown below :

javax.el.ELException: javax.ejb.EJBException: java.lang.IllegalArgumentException: Stack must not be null
 at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:329)
 at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:338)
 at org.jboss.el.parser.AstPropertySuffix.invoke(AstPropertySuffix.java:58)
 at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)
 at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)
 at org.jboss.seam.core.Expressions$2.invoke(Expressions.java:174)
 at org.jboss.seam.mock.BaseSeamTest$ComponentTest.invokeMethod(BaseSeamTest.java:130)
 at com.introspect.scs.testclients.FindClaimTest$1.testComponents(FindClaimTest.java:13)
 at org.jboss.seam.mock.BaseSeamTest$ComponentTest.run(BaseSeamTest.java:156)
 at com.introspect.scs.testclients.FindClaimTest.testFindUnregisteredClaims(FindClaimTest.java:10)
Caused by: javax.ejb.EJBException: java.lang.IllegalArgumentException: Stack must not be null
 at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:63)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83)
 at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:193)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:83)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77)
 at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:105)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:46)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.stateful.StatefulContainer.localInvoke(StatefulContainer.java:204)
 at org.jboss.ejb3.stateful.StatefulLocalProxy.invoke(StatefulLocalProxy.java:100)
 at $Proxy67.find(Unknown Source)
 at org.jboss.seam.util.Reflections.invoke(Reflections.java:21)
 at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:31)
 at org.jboss.seam.intercept.ClientSideInterceptor$1.proceed(ClientSideInterceptor.java:72)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)
 at org.jboss.seam.ejb.RemoveInterceptor.aroundInvoke(RemoveInterceptor.java:41)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106)
 at org.jboss.seam.intercept.ClientSideInterceptor.invoke(ClientSideInterceptor.java:50)
 at org.javassist.tmp.java.lang.Object_$$_javassist_68.find(Object_$$_javassist_68.java)
 at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:325)
 ... 31 more
Caused by: java.lang.IllegalArgumentException: Stack must not be null
 at org.jboss.seam.core.ConversationEntry.<init>(ConversationEntry.java:39)
 at org.jboss.seam.core.ConversationEntries.createConversationEntry(ConversationEntries.java:53)
 at org.jboss.seam.core.Manager.createConversationEntry(Manager.java:510)
 at org.jboss.seam.core.Manager.beginConversation(Manager.java:531)
 at org.jboss.seam.core.ConversationInterceptor.beginConversation(ConversationInterceptor.java:212)
 at org.jboss.seam.core.ConversationInterceptor.beginConversationIfNecessary(ConversationInterceptor.java:149)
 at org.jboss.seam.core.ConversationInterceptor.aroundInvoke(ConversationInterceptor.java:55)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:42)
 at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)
 at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106)
 at org.jboss.seam.intercept.SessionBeanInterceptor.aroundInvoke(SessionBeanInterceptor.java:53)
 at org.jboss.ejb3.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:118)
 at org.jboss.ejb3.interceptor.EJB3InterceptorsInterceptor.invoke(EJB3InterceptorsInterceptor.java:63)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.entity.ExtendedPersistenceContextPropagationInterceptor.invoke(ExtendedPersistenceContextPropagationInterceptor.java:57)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47)
 at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:101)
 at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79)
 ... 65 more

Any pointers?


Thanks


jeff mutonho

[ejbengine]

Hi


Please don't get me wrong , this is not a demand for a response.I just wanna
get an idea why my post failed to induce a response ,i.e its a case of

a) my post being unclear and problem not well explained?

b) I didn't RTFM ?

If that's the case how can I improve on this?


Thank you

[pmuir]

Which Seam version?

You just posted a non-trivial post and no one has had time to look at it so far (12 hours is a quick turnaround here ;)

[ejbengine]

:)

Seam version : jboss-seam-2.0.0.BETA1

Java version : 1.6

[ejbengine]

Changed the code to :

@Test
 public void testFindUnregisteredClaims() throws Exception {
 new FacesRequest() {
 @Override
 protected void invokeApplication() {
 invokeMethod("#{registrationFinder.find}");
 }
 }.run();
 }

and works

[pmuir]

Post the code for registrationFinder (this is working for me in a simple situation)

[ejbengine]

Post the code for registrationFinder (this is working for me in a simple situation)

@Name("registrationFinder")
@Stateful
public class RegistrationFinderBean implements RegistrationFinder {

 @Logger
 private Log log;

 @SuppressWarnings("unused")
 @DataModel
 private List< Claim > unregisteredClaims;

 @SuppressWarnings("unused")
 @DataModelSelection
 private Claim claim;

 @In
 private Session hibernateSession;

 @In(required=false)
 private Date accidentDate;

 @SuppressWarnings("unchecked")
 @Begin(join=true)
 public String find() {
 String queryString = "from Claim where dateRegistered is null";

 Query q = hibernateSession.createQuery(queryString);
 List<Object> results = q.list();
 unregisteredClaims = new ArrayList< Claim >(results.size());
 for(Object result : results) {
 unregisteredClaims.add((Claim) result);
 }
 return "/forms/registration/finder/finder";

 }

 @Remove @Destroy
 public void destroy() { }

}

[pmuir]

Sorry, I need dependant classes as well.

[pmuir]

s/dependant/referenced/