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Posted to commits@cassandra.apache.org by "C. Scott Andreas (JIRA)" <ji...@apache.org> on 2018/11/19 05:53:01 UTC
[jira] [Updated] (CASSANDRA-8953) ability to run jacoco coverage
with a specific patch
[ https://issues.apache.org/jira/browse/CASSANDRA-8953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
C. Scott Andreas updated CASSANDRA-8953:
----------------------------------------
Component/s: Testing
> ability to run jacoco coverage with a specific patch
> ----------------------------------------------------
>
> Key: CASSANDRA-8953
> URL: https://issues.apache.org/jira/browse/CASSANDRA-8953
> Project: Cassandra
> Issue Type: Test
> Components: Testing
> Reporter: Russ Hatch
> Priority: Major
>
> It would be very nice to have code coverage analysis for specific patches (or any other way of isolating a change, like a topic branch with a patch applied).
> This would ideally be a nice way for committers to see how much of a new patch gets exercised by unit (and possibly dtests as well).
> A first iteration of this capability might just be:
> * getting a list of files a patch alters
> * assuming what tests are affected based on source file names
> * running that set of units tests and reporting with jacoco
> * figuring out which lines touched by the diff are covered or not (if you alter a line you should be the person to add tests).
> the final nice to have would be support for functional tests as part of this system, but I'm unsure presently how we can do this without running the entire dtest suite which is a bit onerous.
> There are two github projects which might be interest for this endeavor. The first one converts jacoco coverage data to cobertura format, and the second one can take cobertura data and calculate diff coverage:
> https://github.com/rix0rrr/cover2cover
> https://github.com/Bachmann1234/diff-cover
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