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We use maven to build or Seam 2.2.2 Project for a Jboss 6.1 Server.
When we run seam Test we get the following error.
Caused by: java.lang.NoSuchMethodError: javax.persistence.EntityManager.createQuery(Ljava/lang/String;Ljava/lang/Class;)Ljavax/persistence/TypedQuery;
When we run in production on a Jboss 6.1 The method works fine.
We use the jboss.embedded.version beta3.SP15
That means that in your test environment you only have JPA 1 on the classpath, while you are using JPA 2 in your code.
You probably have your dependency to hibernate / JPA set to
<scope>provided</scope>because JBoss provides JPA through hibernate. You will probably need a similar dependency with<scope>test</scope>.