I am quite confused when I read the instructions about unit testings
on the official site. It mentions that we need to have
LocalServiceTestHelper set up to do the unit testings. Currently, I
have a huge system which consists of 6 different JDO persistent data
classes; and in testings I would definitely need to create some of
these data objects and operate on them. But the DatastoreService thing
stated in the instruction page, can only put in Entity object.
sth like this:
DatastoreService ds =
DatastoreServiceFactory.getDatastoreService();
Entity coordinator = new Entity("Coordinator");
coordinator.setProperty("googleAccount", "lailailai");
coordinator.setProperty("name", "Ms Lai");
ds.put(coordinator);
coordinatorKey = coordinator.getKey();
However, what I really want to have is an object of the following data
class:
@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Coordinator {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key;
@Persistent
private String googleAccount;
@Persistent
private String name;
@Persistent
private List<Key> courses;
public Coordinator(String googleAccount, String name) {
super();
this.googleAccount = googleAccount;
this.name = name;
this.courses = new ArrayList<Key>();
}
public void addCourse(Key c){
courses.add(c);
}
/*getters and setters */
}
I have been searching for a few hours, on the way how to convert
between the Entity thing and a normal JDO object. Because I really
don't think this Entity object, which I can only use the setProperty()
method to set its values, and have no ways to define its methods (you
can see that I not only have getters and setters, but also other
methods like addCourse), can let me do the unit testing in the way
that can really test my existing system.
I tried to use PersistenceManager as well, because I used it in my
normal codes. But it fails with an error called
"java.lang.NullPointerException: No API environment is registered for
this thread".
Please help me on this. Thanks very much!
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