Re: [akka-user] [akka-stream] Stages unit testing
Hi, On Mon, Jan 19, 2015 at 5:54 PM, Alexey Romanchuk alexey.romanc...@gmail.com wrote: Hey hakkers! I am currently updating old application built on akka-streams 0.4 to 1.0-MX API. I used Transformers and now migrate it to PullPushStages. In general migration is pretty easy, but I can not figure out how should I rewrite unit test for custom stages? In 0.4 transformers had simple external API and I use unit test to test them. There is context in 1.0 stages API and unit testing is not so straightforward. I found that most of prebuild stages test by building simple streams, but looks like it is too much testing environment for stage testing. I think simple streams are usually all you need for testing PushPullStages (but not enough for DetachedStages, we need better testing support for them than the very low level testing stuff we have now). Now there is a hidden class, that is INTERNAL API for now, but we might open it up. It is called IteratorInterpreter, and it allows to execute a series of PushPullStages on top of an Iterator, providing a new Iterator in turn, which basically drives the Stages. No materialization, no actors, no threads, no actorsystem, just a plain iterator. I guess it is useful for lot of testing tasks. Btw, all of the interpreters are very lightweight, they are basically allocation free even for the hot path, only completion and error handling uses some allocations. -Endre Could you advise right approach to test streams and custom stages especially? Thanks! -- 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+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. 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+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
Re: [akka-user] [akka-stream] Stages unit testing
Hi, looks very interesting and very useful especially for stages testing. Thanks! On Tue, Jan 20, 2015 at 5:26 PM, Endre Varga endre.va...@typesafe.com wrote: Hi, On Mon, Jan 19, 2015 at 5:54 PM, Alexey Romanchuk alexey.romanc...@gmail.com wrote: Hey hakkers! I am currently updating old application built on akka-streams 0.4 to 1.0-MX API. I used Transformers and now migrate it to PullPushStages. In general migration is pretty easy, but I can not figure out how should I rewrite unit test for custom stages? In 0.4 transformers had simple external API and I use unit test to test them. There is context in 1.0 stages API and unit testing is not so straightforward. I found that most of prebuild stages test by building simple streams, but looks like it is too much testing environment for stage testing. I think simple streams are usually all you need for testing PushPullStages (but not enough for DetachedStages, we need better testing support for them than the very low level testing stuff we have now). Now there is a hidden class, that is INTERNAL API for now, but we might open it up. It is called IteratorInterpreter, and it allows to execute a series of PushPullStages on top of an Iterator, providing a new Iterator in turn, which basically drives the Stages. No materialization, no actors, no threads, no actorsystem, just a plain iterator. I guess it is useful for lot of testing tasks. Btw, all of the interpreters are very lightweight, they are basically allocation free even for the hot path, only completion and error handling uses some allocations. -Endre Could you advise right approach to test streams and custom stages especially? Thanks! -- 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+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. 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 a topic in the Google Groups Akka User List group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/akka-user/lopuSiMfXMw/unsubscribe. To unsubscribe from this group and all its topics, send an email to akka-user+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. 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+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
Re: [akka-user] [akka-stream] Stages unit testing
Hi Alexey! This sounds like it should be thought of and perhaps shipped together with the Streams Testkit once we get to implementing it. Feel free to add your ideas to this ticket: https://github.com/akka/akka/issues/15748 in which we’re tracking ideas on what a Streams TestKit should look like. Thanks for the feedback / interest and ideas :-) -- Konrad 'ktoso’ Malawski Akka @ Typesafe On 19 January 2015 at 17:54:05, Alexey Romanchuk (alexey.romanc...@gmail.com) wrote: Hey hakkers! I am currently updating old application built on akka-streams 0.4 to 1.0-MX API. I used Transformers and now migrate it to PullPushStages. In general migration is pretty easy, but I can not figure out how should I rewrite unit test for custom stages? In 0.4 transformers had simple external API and I use unit test to test them. There is context in 1.0 stages API and unit testing is not so straightforward. I found that most of prebuild stages test by building simple streams, but looks like it is too much testing environment for stage testing. Could you advise right approach to test streams and custom stages especially? Thanks! -- 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+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. 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+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
[akka-user] [akka-stream] Stages unit testing
Hey hakkers! I am currently updating old application built on akka-streams 0.4 to 1.0-MX API. I used Transformers and now migrate it to PullPushStages. In general migration is pretty easy, but I can not figure out how should I rewrite unit test for custom stages? In 0.4 transformers had simple external API and I use unit test to test them. There is context in 1.0 stages API and unit testing is not so straightforward. I found that most of prebuild stages test by building simple streams, but looks like it is too much testing environment for stage testing. Could you advise right approach to test streams and custom stages especially? Thanks! -- 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+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
