Logstash Filter development: rspec test for filter success/failure

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1

Hi,

i couldn't find a way to test for filter success, i.e. whether the filter_matched method was called on an event. I tried to find this by looking at the tests of some of the official filter plugins but couldn't find anything. I noticed the raise_error check, but that's about exception... I'm only interested in whether filter_matched was called.
This is my spec so far: https://github.com/fholzer/logstash-filter-real_ip/blob/master/spec/filters/real_ip_spec.rb

I'm new to ruby, so any help is highly appreciated.

Cheers,
Ferdinand

2

Found a workaround. For anyone having the same issue, use an add_field directive in your filter config block, then test whether the field was added.

Example:

Cheers,
Ferdinand

3

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