> > Yes, exactly! Think of it as an HTTP endpoint, you can only send messages > and see what it responds with, if you can observe the effect of the > previous message by sending it another message, then you can observe and > test the relationship.
*Gold.* Thank you. On Thursday, 20 November 2014 09:58:06 UTC+11, √ wrote: > > > > On Wed, Nov 19, 2014 at 11:51 PM, Richard Rodseth <rrod...@gmail.com > <javascript:>> wrote: > >> Hmm. I think what you're saying is that I shouldn't worry about >> validating actor state, only what outgoing messages are emitted. In this >> case, I might pump some measurement data into the parent, do an expectNoMsg >> on the client of the event bus. Pump some more data that *should* trigger >> notifications, and do an expectMsg. I think that would work, in conjunction >> with unit tests of the internal classes. There are some internal buffers >> that I felt I should verify that they are cleared, but I'll think over your >> advice. >> >> > Yes, exactly! Think of it as an HTTP endpoint, you can only send messages > and see what it responds with, if you can observe the effect of the > previous message by sending it another message, then you can observe and > test the relationship. > > >> If this is universally true, then use of underlyingActor seems like an >> anti-pattern. >> > > I'd say it is, but there may be cases where this is needed/required. > > >> >> On Wed, Nov 19, 2014 at 11:52 AM, √iktor Ҡlang <viktor...@gmail.com >> <javascript:>> wrote: >> >>> I'm sorry, I didn't imply that you should add a status message, but if >>> the effects of changing the actors state is not observable in its behavior, >>> then why does it matter? >>> >>> On Wed, Nov 19, 2014 at 5:45 PM, Richard Rodseth <rrod...@gmail.com >>> <javascript:>> wrote: >>> >>>> I can use underlyingActor, but perhaps that doesn't qualify as "from >>>> the outside". >>>> I might have a GetInfo message I could use (that exists to support a >>>> REST API). >>>> >>>> >>>> On Wed, Nov 19, 2014 at 7:59 AM, √iktor Ҡlang <viktor...@gmail.com >>>> <javascript:>> wrote: >>>> >>>>> Can you, from the outside, observe whether it updated its internal >>>>> state? >>>>> >>>>> On Wed, Nov 19, 2014 at 4:53 PM, Richard Rodseth <rrod...@gmail.com >>>>> <javascript:>> wrote: >>>>> >>>>>> Sorry. The parent actor P gets a message containing measurement data. >>>>>> It calculates a sequence of notifications about that data, which it >>>>>> passes >>>>>> to the per-request child after become()ing "saving". That child updates >>>>>> the >>>>>> persistent state of P, and if that succeeds, posts the notifications to >>>>>> an >>>>>> event bus and sends an ack back to P, at which point P updates its >>>>>> internal >>>>>> in-memory model (advancing a time stamp, basically). >>>>>> >>>>>> There are actually many Ps, but my "micro-integration test" is just >>>>>> to check that P sends the proper notifications to the event bus, and >>>>>> updates its internal state. >>>>>> >>>>>> >>>>>> On Wed, Nov 19, 2014 at 3:48 AM, √iktor Ҡlang <viktor...@gmail.com >>>>>> <javascript:>> wrote: >>>>>> >>>>>>> I'm not sure I follow. Test for what message and what effect? >>>>>>> >>>>>>> On Wed, Nov 19, 2014 at 1:05 AM, Richard Rodseth <rrod...@gmail.com >>>>>>> <javascript:>> wrote: >>>>>>> >>>>>>>> This does rather beg the question of what the integration boundary >>>>>>>> is, and also if the use case in question ends with an ack back to the >>>>>>>> initiating actor, how would one test for that message (or its effect), >>>>>>>> given that it's a TestActorRef rather than a TestProbe. >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> On Tue, Nov 18, 2014 at 3:08 PM, Richard Rodseth <rrod...@gmail.com >>>>>>>> <javascript:>> wrote: >>>>>>>> >>>>>>>>> Thanks for the input. I guess I can register a testprobe.ref as a >>>>>>>>> subscriber to the event bus. I will still need to control the >>>>>>>>> creation of >>>>>>>>> the per-request child so that I can inject a mock storage interface >>>>>>>>> that >>>>>>>>> acks with success so that the posting to the event bus occurs. >>>>>>>>> >>>>>>>>> On Tue, Nov 18, 2014 at 2:48 PM, √iktor Ҡlang <viktor...@gmail.com >>>>>>>>> <javascript:>> wrote: >>>>>>>>> >>>>>>>>>> You can test that the parent passed the correct set of results to >>>>>>>>>> the child actor by observing the results of the child actors >>>>>>>>>> processing. >>>>>>>>>> >>>>>>>>>> Usually it becomes tricky to apply Unit Testing to Actors, think >>>>>>>>>> Integration testing instead (but at a microlevel). >>>>>>>>>> >>>>>>>>>> On Tue, Nov 18, 2014 at 11:43 PM, Richard Rodseth < >>>>>>>>>> rrod...@gmail.com <javascript:>> wrote: >>>>>>>>>> >>>>>>>>>>> The message A in the parent actor is computing a set of results. >>>>>>>>>>> The per-request child will be saving some state from those results, >>>>>>>>>>> and if >>>>>>>>>>> successful, posting a domain event containing the results to an >>>>>>>>>>> event bus >>>>>>>>>>> and also acking back to the parent. >>>>>>>>>>> >>>>>>>>>>> To begin with, I just wish to test that the parent actor passed >>>>>>>>>>> the correct set of results to the child constructor. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On Tue, Nov 18, 2014 at 2:24 PM, √iktor Ҡlang < >>>>>>>>>>> viktor...@gmail.com <javascript:>> wrote: >>>>>>>>>>> >>>>>>>>>>>> Hi Richard, >>>>>>>>>>>> >>>>>>>>>>>> what effects are you trying to test? >>>>>>>>>>>> >>>>>>>>>>>> On Tue, Nov 18, 2014 at 11:17 PM, Richard Rodseth < >>>>>>>>>>>> rrod...@gmail.com <javascript:>> wrote: >>>>>>>>>>>> >>>>>>>>>>>>> I have a parent actor which, on receipt of a certain message >>>>>>>>>>>>> A, spawns a child actor, and sends it a "Run" message with no >>>>>>>>>>>>> parameters. >>>>>>>>>>>>> The child actor has constructor parameters derived from the >>>>>>>>>>>>> contents of >>>>>>>>>>>>> message A. >>>>>>>>>>>>> >>>>>>>>>>>>> What's the best way to test this? I don't think I can apply >>>>>>>>>>>>> techniques like >>>>>>>>>>>>> childMaker: ActorRefFactory => ActorRef >>>>>>>>>>>>> because of the per-request constructor parameters. >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> -- >>>>>>>>>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>>>>> >>>>>>>>>> Check the FAQ: >>>>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>>>>> >>>>>>>>>> Search the archives: >>>>>>>>>>>>> https://groups.google.com/group/akka-user >>>>>>>>>>>>> --- >>>>>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>>>>> Google Groups "Akka User List" group. >>>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from >>>>>>>>>>>>> it, send an email to akka-user+...@googlegroups.com >>>>>>>>>>>>> <javascript:>. >>>>>>>>>>>>> To post to this group, send email to akka...@googlegroups.com >>>>>>>>>>>>> <javascript:>. >>>>>>>>>>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> -- >>>>>>>>>>>> Cheers, >>>>>>>>>>>> √ >>>>>>>>>>>> >>>>>>>>>>>> -- >>>>>>>>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>>>> >>>>>>>>>> Check the FAQ: >>>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>>>> >>>>>>>>>> Search the archives: >>>>>>>>>>>> https://groups.google.com/group/akka-user >>>>>>>>>>>> --- >>>>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>>>> Google Groups "Akka User List" group. >>>>>>>>>>>> To unsubscribe from this group and stop receiving emails from >>>>>>>>>>>> it, send an email to akka-user+...@googlegroups.com >>>>>>>>>>>> <javascript:>. >>>>>>>>>>>> To post to this group, send email to akka...@googlegroups.com >>>>>>>>>>>> <javascript:>. >>>>>>>>>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>>> >>>>>>>>>> Check the FAQ: >>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>>> >>>>>>>>>> Search the archives: >>>>>>>>>>> https://groups.google.com/group/akka-user >>>>>>>>>>> --- >>>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>>> Google Groups "Akka User List" group. >>>>>>>>>>> To unsubscribe from this group and stop receiving emails from >>>>>>>>>>> it, send an email to akka-user+...@googlegroups.com >>>>>>>>>>> <javascript:>. >>>>>>>>>>> To post to this group, send email to akka...@googlegroups.com >>>>>>>>>>> <javascript:>. >>>>>>>>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> Cheers, >>>>>>>>>> √ >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> >>>>>>>>>> Search the archives: >>>>>>>>>> https://groups.google.com/group/akka-user >>>>>>>>>> --- >>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>> Google Groups "Akka User List" group. >>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>>> send an email to akka-user+...@googlegroups.com <javascript:>. >>>>>>>>>> To post to this group, send email to akka...@googlegroups.com >>>>>>>>>> <javascript:>. >>>>>>>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> -- >>>>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>> >>>>>>>>>> Check the FAQ: >>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>> >>>>>>>>>> Search the archives: >>>>>>>> https://groups.google.com/group/akka-user >>>>>>>> --- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "Akka User List" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to akka-user+...@googlegroups.com <javascript:>. >>>>>>>> To post to this group, send email to akka...@googlegroups.com >>>>>>>> <javascript:>. >>>>>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Cheers, >>>>>>> √ >>>>>>> >>>>>>> -- >>>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>> >>>>>>>>>> Check the FAQ: >>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>> >>>>>>>>>> Search the archives: >>>>>>> https://groups.google.com/group/akka-user >>>>>>> --- >>>>>>> You received this message because you are subscribed to the Google >>>>>>> Groups "Akka User List" group. >>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>> send an email to akka-user+...@googlegroups.com <javascript:>. >>>>>>> To post to this group, send email to akka...@googlegroups.com >>>>>>> <javascript:>. >>>>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>> >>>>>> >>>>>> -- >>>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>> >>>>>>>>>> Check the FAQ: >>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>> >>>>>>>>>> Search the archives: >>>>>> https://groups.google.com/group/akka-user >>>>>> --- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Akka User List" group. >>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>> send an email to akka-user+...@googlegroups.com <javascript:>. >>>>>> To post to this group, send email to akka...@googlegroups.com >>>>>> <javascript:>. >>>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> Cheers, >>>>> √ >>>>> >>>>> -- >>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>> >>>>>>>>>> Check the FAQ: >>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>> >>>>>>>>>> Search the archives: >>>>> https://groups.google.com/group/akka-user >>>>> --- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Akka User List" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to akka-user+...@googlegroups.com <javascript:>. >>>>> To post to this group, send email to akka...@googlegroups.com >>>>> <javascript:>. >>>>> Visit this group at http://groups.google.com/group/akka-user. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>> >>>>>>>>>> Check the FAQ: >>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>> >>>>>>>>>> Search the archives: >>>> https://groups.google.com/group/akka-user >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "Akka User List" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to akka-user+...@googlegroups.com <javascript:>. >>>> To post to this group, send email to akka...@googlegroups.com >>>> <javascript:>. >>>> Visit this group at http://groups.google.com/group/akka-user. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> >>> >>> -- >>> Cheers, >>> √ >>> >>> -- >>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>> >>>>>>>>>> Check the FAQ: >>> http://doc.akka.io/docs/akka/current/additional/faq.html >>> >>>>>>>>>> Search the archives: >>> https://groups.google.com/group/akka-user >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "Akka User List" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to akka-user+...@googlegroups.com <javascript:>. >>> To post to this group, send email to akka...@googlegroups.com >>> <javascript:>. >>> Visit this group at http://groups.google.com/group/akka-user. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: >> http://doc.akka.io/docs/akka/current/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to akka-user+...@googlegroups.com 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