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https://issues.jenkins-ci.org/browse/JENKINS-8326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=161244#comment-161244
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Rob Hunter commented on JENKINS-8326:
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I'd also like to have support for failing the build when the coverage gets
worse than it was.
I've been looking at different options like:
* post-build script to re-configure thresholds with Groovy
* post-build script to re-configure thresholds with HTTP API
* thresholds use variables ${COBERTURA_MIN_METHOD_COVERAGE} or something
It'd be super-nice if the Cobertura plugin supported "ratcheting" limits like
this but I'd be happy if it were obvious how to source the thresholds from
anywhere other than a fixed value in the Web interface.
(FWIW, I don't think this is a duplicate of JENKINS-11025 -- that only covers
static thresholds, this ticket covers dynamic thresholds)
> Support for ratcheting
> ----------------------
>
> Key: JENKINS-8326
> URL: https://issues.jenkins-ci.org/browse/JENKINS-8326
> Project: Jenkins
> Issue Type: New Feature
> Components: cobertura
> Reporter: johnsmart
> Assignee: stephenconnolly
>
> It would be very useful to add support for ratcheting. This would involve
> making the build job fail or become unstable if the code coverage for a build
> drops below the code coverage of the previous build. The plugin could keep
> track of the highest code coverage metrics values from previous builds, and
> check against this. If the current results are lower, the build fails. If
> not, the latest values are stored as the new reference values.
> This is very useful for legacy projects, where you want to adopt a Continuous
> Improvement strategy rather than just imposing a minimum required level of
> test coverage.
> Thoughts?
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