Plugin generates no test data for Spock specs + Grails 2.4.4

[felipecao]

Hi,
I have a project using Grails-2.4.4 where all tests are written using Spock, and, currently, if we run "clean" "test-app unit: -echoOut -echoErr -coverage -xml" on Jenkins, unit specs run fine but no test coverage data is generated.

I mean, the target/test-reports/cobertura folder is there, but there's no information about code coverage in the generated HTML files. Is this a known issue? Am I doing anything wrong here? Is there a workaround?

Thanks a lot!