I want to test an EJB module which is part of an EAR. Additionally the EAR contains 2 other files required for deployment:

• hska-ds.xml to define the JBoss datasource
• security-jboss-beans.xml to define the login module for authentication.

Therefore, I defined in a JUnit testcase:
@Deployment
public static EnterpriseArchive createTestArchive()

Now I get this stacktrace:

java.lang.RuntimeException: Could not get Deployment
at org.jboss.arquillian.impl.DeploymentAnnotationArchiveGenerator.generateApplicationArchive(DeploymentAnnotationArchiveGenerator.java:58)
at org.jboss.arquillian.impl.ClientDeploymentGenerator.generate(ClientDeploymentGenerator.java:58)
at org.jboss.arquillian.impl.DeployableTest.generateArchive(DeployableTest.java:72)
at org.jboss.arquillian.junit.Arquillian$2.evaluate(Arquillian.java:97)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
at org.jboss.arquillian.junit.Arquillian$3.evaluate(Arquillian.java:115)
at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:59)
at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:115)
at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:102)
at org.apache.maven.surefire.Surefire.run(Surefire.java:180)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:350)
at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1021)
Caused by: java.lang.UnsupportedOperationException: EnterpriseArchive does not support classes
at org.jboss.shrinkwrap.impl.base.spec.EnterpriseArchiveImpl.getClassesPath(EnterpriseArchiveImpl.java:139)
at org.jboss.shrinkwrap.impl.base.container.ContainerBase.addClasses(ContainerBase.java:731)
at org.jboss.shrinkwrap.impl.base.container.ContainerBase.addClass(ContainerBase.java:676)
at org.jboss.arquillian.impl.DeploymentAnnotationArchiveGenerator.generateApplicationArchive(DeploymentAnnotationArchiveGenerator.java:51)
... 16 more