Re: [akka-user] Unit testing and parent reference

[Rich Dougherty]

I guess you could make a probe actor that creates your existing actor as a child?

Rich

On Wed, Dec 5, 2012 at 3:06 PM, slane <iiro....@nemit.fi> wrote:

Hi,

This could be a stupid question but Googling did not yield any results, so here goes.

I am writing unit tests for an existing actor. The actor sends a few messages to it's parent via context.parent and I haven't been able to replace the parent reference with a probe actor. How could I accomplish that? Or is there some other way to test if the messages to the parent are being sent?

Kind regards,

Iiro L

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[Derek Wyatt]

Yeah, you can't do this the way that you're trying, I believe.

I would go with one of two other approaches:

• Don't use context.parent.  Have the parent send itself as a construction parameter to the child and let the child use that reference.  Easy to inject a new one for test
• Don't call context.parent directly.  Mix in a trait that has a method called tellParent() that tells to context.parent, which you can swap during testing.