Hi,

Do you mean tests to verify that some metric is actually registered?

AFAIK, this is not really easy to do as a unit test.

One possible way is to have an integration test that uses a metrics reporter, 
from which you verify against.
For example, the Kafka consumer integration tests that uses the JMXReporter for 
a submitted job and queries results from that to verify that some specific 
metrics are forwarded from the Kafka client.
We also have an end-to-end test for savepointing, that uses the SLF4JReporter 
to write metrics to logs, which are parsed for a specific metric to monitor 
progress.

Also pulling in Chesnay (in CC), who might have more ideas here.

Cheers,
Gordon

On 25 April 2018 at 1:59:18 AM, Julio Biason (julio.bia...@azion.com) wrote:

Hey guys and gals,

Just wondering: Does anyone have an idea how to test if metrics are being 
generated? I have an integration test and I just added a processor to count 
elements in late arrivals (the general idea is to capture those, count and get 
an average, so we can adjust the allowedLateness) but now I'm wondering if 
there is a way I can integrate this into the test itself.

Possible? Not possible? Ideas?

--
Julio Biason, Sofware Engineer
AZION  |  Deliver. Accelerate. Protect.
Office: +55 51 3083 8101  |  Mobile: +55 51 99907 0554

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