Test event production without defining a subject

[NotGrm]

As reported on Slack

I received a undefined method topic' for #<Model ... error when writing come model specs in my Rails app because my model was producing Kafka events.

The source of the bug seems to be related to this line which forces me to define my test subject as a Karakfa testing consumer instead of an instance on my model class.

But as I do not consume any event from the topic on which I produce the event I am unable to use the consumer_for helper and have to define test double to avoid the bug

@mensfeld wrote this in response to my question

need to decommission the subject from consumer reference and then for consumer specs use the subject but otherwise direct reference

[mensfeld]

 NoMethodError:
       undefined method `topic' for #<Visit id: "02d1b80e-4eae-4143-bde3-51ddc9a447a9", visited_at: "2022-10-19 09:04:58.147965000 +0000", visitor_id: "7e44f979-692d-4a4f-9ea8-03bdd2113e19", page_path: "0.3938326796841043">

I can repro with the example rails app. Trivial to fix.

[mensfeld]

@NotGrm works on my side but just to be sure: #103 can you test this branch?

I added this case in the examples app repo to cover for any future cases. Once confirmed 🆗 will merge and release.

[NotGrm]

@mensfeld it is ok for me. Thanks a lot 🚀