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From "Matthias J. Sax" <matth...@confluent.io>
Subject Re: [DISCUSS] KIP-247: Add public test utils for Kafka Streams
Date Wed, 17 Jan 2018 19:40:25 GMT

sorry for late reply. Avro records are basically supported. However,
there are no plans atm to integrate the test driver with a schema
registry. Note, that Apache Kafka does not provide a schema registry by
itself. If we integrate one RS, we need to integrate all of them -- that
is something Apache Kafka should not do from my point of view.

Thus, if you want to use ArvoSerdes that use a schema registry, those
should mock be mocked accordingly. However, there is nothing this KIP
can help with this regard IMHO.

I left a comment on the ticket to pointed out. :)


On 1/17/18 1:29 AM, Saïd Bouras wrote:
> Matthias,
> What about testing topology that use avro schema ? Have you read my
> previous response ?
> Thanks.
> On Wed, Jan 17, 2018 at 3:34 AM Matthias J. Sax <matthias@confluent.io>
> wrote:
>> Colin,
>> the TopologyTestDriver does not connect to any broker and simulates
>> processing of single-partitioned input topics purely in-memory (the
>> driver is basically a mock for a StreamThread). This is sufficient to
>> test basic business logic. For more complex topologies that are actually
>> divided into sub-topologies and connected via topics, the driver detects
>> this case and does an in-memory forward.
>> -Matthias
>> On 1/16/18 10:08 AM, Colin McCabe wrote:
>>> Thanks, Matthias, this looks great.
>>> It seems like these APIs could either be used against mock objects, or
>> against real brokers running in the same process.  Is there a way for the
>> user to select which they want when using the API?  Sorry if it's in the
>> KIP and I missed it.
>>> cheers,
>>> Colin
>>> On Thu, Jan 11, 2018, at 18:06, Matthias J. Sax wrote:
>>>> Dear Kafka community,
>>>> I want to propose KIP-247 to add public test utils to the Streams API.
>>>> The goal is to simplify testing of Kafka Streams applications.
>>>> Please find details in the wiki:
>> https://cwiki.apache.org/confluence/display/KAFKA/KIP-247%3A+Add+public+test+utils+for+Kafka+Streams
>>>> This is an initial KIP, and we hope to add more utility functions later.
>>>> Thus, this KIP is not comprehensive but a first step. Of course, we can
>>>> enrich this initial KIP if we think it falls too short. But we should
>>>> not aim to be comprehensive to keep the scope manageable.
>>>> In fact, I think we should add some more helpers to simplify result
>>>> verification. I will update the KIP with this asap. Just wanted to start
>>>> the discussion early on.
>>>> An initial WIP PR can be found here:
>>>> https://github.com/apache/kafka/pull/4402
>>>> I also included the user-list (please hit "reply-all" to include both
>>>> lists in this KIP discussion).
>>>> Thanks a lot.
>>>> -Matthias
>>>> Email had 1 attachment:
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>>>>   1k (application/pgp-signature)

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