CommandHandler setup issue

Imported from Google Groups
1

Hello,
I’ve got poc project here https://github.com/bilak/axonframework-poc .
I can’t solve issue (maybe it’s my bad configuration) when doing test. There is one UserTest class which is testing command/event with fixture.
When command is distributed to commandHandler (UserCommandHandler) nullpointerexception is thrown because application complains that Repository is not available (is null) but that’s not true, because when I point to setUserRepository method, I can see that repository is being injected.
Is Axon creating separate bean of commandHandler and holding it somewhere inside it context?

I have this excption:

org.axonframework.test.AxonAssertionError: The published events do not match the expected events

Expected Actual
com.github.bilak.axonframework.poc.domain.user.UserRegisteredEvent < >

A probable cause for the wrong chain of events is an exception that occurred while handling the command.
java.lang.NullPointerException
at com.github.bilak.axonframework.poc.command.user.UserCommandHandler.handleRegisterUser(UserCommandHandler.java:22)

can somebody please suggest some fix for this?

Thanks

2

Hi,

It’s probably because of an error during the Spring application context bootstrapping. I couldn’t find the initialization of dataSource bean in your Spring config.

3

Lukas,

check line 22 of UserCommandHandler. As the test result indicates, it raises a Null pointer exception. Note that the test fixtures don’t set up a Spring context. If you need to inject properties in your command handler, you need to so so yourself.

Cheers,

Allard

4

But that’s weird, because when I put some logging to setUserRepository, I can see that it’s injected in there. So I don’t understand why then userRepository is null.

Dňa štvrtok, 6. augusta 2015 21:32:52 UTC+2 Allard Buijze napísal(-a):

5

It might also be another value on that line. Only debugging can provide the answer…

6

OK I found that UserCommandHandler is another instance in JUnit test as that which has injected UserRepository.
But I’m confused, because I don’t know how to repair that.
I just created post on stackoverflow so maybe someone will hep me.

7

Looks like the question is answered on StackOverflow.
Generally, I don’t advise using Spring configuration in GivenWhenThen tests. Treat them as Unit tests and only inject the necessary components.