Code Coverage with groovy

[Sandra Gerberding]

Hi,

we will check code coverage in our grails project. 

Grails 3.1.2, Groovy 2.4.6, Gradle 2.6, Java 1.7, IDEA 

When we check code coverage in IDEA with jacoco we have a coverage of 100% for all our services, with the gradle plugin 78% because the standard Object methods (wait, notify...) are included in the check/report.

Is there a way to exclude these methods? 

best regards 

Sandra 

[Marc Hoffmann]

Hi,

JaCoCo does not yet support exclusion of specific methods.

regards,
-marc

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[Sandra Gerberding]

Hi, 

exclusion of specific methods is not what we would like to do. What we would like JaCoCo should do, is the exclusion of standard Java Object methods (equals, wait, notify...) and standard Groovy methods, that are added to all Objects. This seems to be possible since executing tests using IntelliJ IDEA while collection coverage data using JaCoCo as code coverage library does exactly what we expect: only the methods of our classes under tests are shown in the coverage report. It would be very nice, if JaCoCo code coverage would behave the same when starting the same tests using gradle.

We ask ourself: why do the code coverage reports behave differently when executed from within IntelliJ IDEA and from within gradle? Do You have an answer to this?

Best regards,

Sandra

[Marc R. Hoffmann]

Hi Sandra,

ok, for Groovy methods we have a filter on out list of use cases: https://github.com/jacoco/jacoco/wiki/FilteringOptions

But this is not yet implemented in JaCoCo.

The JaCoCo backend is primarly a Java API. We have a couple of third-party integrations like for IntelliJ. Maybe they implemented some filtering on their own. Would be nice to leran more about this, maybe they can contribute back zu JaCoCo.

Also are you sure you're actually using JaCoCo in IntelliJ? They also have their own coverage engine.

Regards,
-marc

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Marc Hoffmann
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