Ok, in my unit test I originally had:
| EntityManager entityManager = emf.createEntityManager();
|
I have replaced it with:
| EntityManager entityManager = new EntityManagerProxy(
emf.createEntityManager() );
|
Now the exception is:
| java.lang.IllegalStateException: No application context active
| at org.jboss.seam.ScopeType.getContext(ScopeType.java:139)
| at org.jboss.seam.Component.getInstance(Component.java:1589)
| at org.jboss.seam.Component.getInstance(Component.java:1567)
| at org.jboss.seam.Component.getInstance(Component.java:1562)
| at org.jboss.seam.core.Expressions.instance(Expressions.java:219)
| at org.jboss.seam.persistence.QueryParser.<init>(QueryParser.java:60)
| at org.jboss.seam.persistence.QueryParser.<init>(QueryParser.java:33)
| at
org.jboss.seam.persistence.EntityManagerProxy.createQuery(EntityManagerProxy.java:57)
|
The class/method that I am attempting to unit test looks like:
| @Stateful
| @Scope(ScopeType.SESSION)
| @Name("userBrowser")
| @TransactionAttribute(TransactionAttributeType.REQUIRES_NEW)
| public class UserBrowserAction implements Serializable, UserBrowser {
|
| @Logger
| private Log log;
|
| @PersistenceContext
| private EntityManager entityManager;
|
| @DataModel
| private List<User> users;
|
| @DataModelSelection(value = "users")
| private User selectedUser;
|
| @Factory("users")
| @Observer("newUserRegistered")
| @SuppressWarnings("unchecked")
| public void getUsers() {
| log.debug("Invoke factory for users");
|
| this.users = this.entityManager.createQuery("from User user where
user.username <> #{currentUser.username} ").getResultList();
|
| log.debug("Found #0 users", this.users.size());
| }
|
| @Destroy
| @Remove
| public void destroy() {
| }
| }
|
My unit test is:
| public class UserBrowserTest extends SeamTest {
|
| @Test (groups = "unit")
| @SuppressWarnings("unchecked")
| public void testGetUsers() throws Exception {
| EntityManagerFactory emf =
Persistence.createEntityManagerFactory("test-persistence-unit");
| EntityManager entityManager = new EntityManagerProxy(
emf.createEntityManager() );
|
| // create a log to inject
| Log log = Logging.getLog(UserBrowserAction.class);
|
| UserBrowser userBrowser = new UserBrowserAction();
|
| super.setField(userBrowser, "entityManager", entityManager);
| super.setField(userBrowser, "log", log);
|
| // invoke method
| userBrowser.getUsers();
|
| // inspect the property
| List<User> users = (List<User>) super.getField(userBrowser,
"users");
|
| assert users != null;
| assert users.size() == 2;
| }
| }
|
So my questions:
| * From the exception it looks like I may have to provide more than I am
currently via something in org.jboss.seam.mock.* e.g currentUser (In the
application currentUser is a session scoped component that is instantiated when
a user logs in). Are there any examples of using these mock objects anywhere?
| * Currently I am extending SeamTest which I understand is used for
integration testing. Is it incorrect to do this when unit testing; several of
the methods provided seem helpful in unit testing also. Would it be feasible to
override init so that the embedded container is not started for stand alone
unit test (or maybe have something like SeamUnitTest?
| * In general I seem to be having difficulties writing unit test because it
occurs over and over again that some method is accessing a variable that is
within scope during normal program executions e.g. in the code above
currentUser is within scope but is not injected into the component that is
accessing it. Is this bad practice? I tested re-writing the class that I am
trying to test to contain and instance of the currentUser object injected using
@In and then accessing that object from the method that performs the query and
this works, both in the application and in my unit test if I manually inject
that object.
| * Is it possible to manually inject objects into different scopes
programmatically for unit testing?
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