Report is empty

[spartanhooah]

I added cobertura 3.0.0 to an existing Java project and the cobertura task ran fine and generated the report files, but there are no packages listed, 0 classes, and all coverage columns are N/A. Any idea what's going on? Here's my repo at the point when I added the plugin: https://github.com/spartanhooah/recipe/tree/1056981a23c130b593b7bc60d3196e20b6b1b888

Java version 11.0.5
Gradle wrapper 5.4.1

[stevesaliman]

When I look at the output from gradle cobertura, I see that Cobertura itself can't instrument any of the classes. I have no idea why. Cobertura has some known issues with Java 8+, but I have a Spring Boot project of my own that instruments fine. There are known issues with Cobertura instrumenting classes with static methods, but I don't think that is the issue here because you have classes that don't have any. Your sample project is pretty simple, so I don't think it is some strange dependency problem.

At the moment, I have no idea what might be going on. All I can say at this point is that uninstrumented classes will not show any coverage when the tests themselves run, so the solution will be to figure out why Cobertura is having an issue with the classes in your project.

[jjba23]

Bump. I am having the same issue, with a Groovy only project. All seems to go fine, except there occur actually no coverage checking. Tests run, files get generated, but no coverage.

[chgans]

Same issue with net.saliman.cobertura 4.0.0, groovy 2.4 and gradle 6.2.2.
Reports is empty:

> Task :instrument
Cobertura 2.1.1 - GNU GPL License (NO WARRANTY) - See COPYRIGHT file

> Task :test
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.codehaus.groovy.reflection.CachedClass (file:/home/chgans/.gradle/caches/modules-2/files-2.1/org.codehaus.groovy/groovy-all/2.4.12/760afc568cbd94c09d78f801ce51aed1326710af/groovy-all-2.4.12.jar) to method java.lang.Object.finalize()
WARNING: Please consider reporting this to the maintainers of org.codehaus.groovy.reflection.CachedClass
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

> Task :generateCoberturaReport
Cobertura 2.1.1 - GNU GPL License (NO WARRANTY) - See COPYRIGHT file
Report time: 15ms
Cobertura 2.1.1 - GNU GPL License (NO WARRANTY) - See COPYRIGHT file
Report time: 13ms

Deprecated Gradle features were used in this build, making it incompatible with Gradle 7.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/6.2.2/userguide/command_line_interface.html#sec:command_line_warnings

BUILD SUCCESSFUL in 2s
7 actionable tasks: 7 executed

Fixed by using this:

cobertura {
    coverageFormats = ['html', 'xml']
    coverageDirs = [file("${buildDir}/classes/groovy/main")]
}

Don't ask me why? just copy/paste from some projects found on gitlab...