CommandHandler setup issue

[Lukáš Vasek]

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 

[Nedim Sabic]

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.

[Allard Buijze]

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

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[Lukáš Vasek]

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):

[Allard Buijze]

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

[Lukáš Vasek]

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.

[Allard Buijze]

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.

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