Jacoco coverage reported as 0.0% on first run

[ardevd]

It seems like the console reported always prints out 0.0% coverage on the first run in a clean environment.

Steps to produce:

1. Delete any previous reports directory.
2. Run ./gradlew jacocoTestReport
3. Notice how the coverage summary says 0.0% coverage.
4. Run ./gradlew jacocoTestReport again
5. The correct coverage summary is now printed.

This makes it impossible to use it for CI integration as the tests there will always be run in a clean environment.

[louth]

I worked around this with
jacocoTestReport.dependsOn build

To be fair, it seems like more of a jacoco plugin issue than a problem with this plugin.

[StFS]

Unfortunately, your workaround did not solve this issue for me. So in my CI loop I'm actually running the gradle command twice. Fortunately, gradle manages to short-circuit the whole compiling and running of the tests so the build time impact is minimal, but the build config looks very ugly instead.

[StFS]

What actually fixed it for me was to add the following line to my build.gradle:

reportCoverage.dependsOn jacocoTestReport

[leonardotc]

Fior me this worked:

test.finalizedBy jacocoTestReport
jacocoTestReport.finalizedBy reportCoverage

PS: I never used gradle before this so do not take this as the "best way" to do this nor anything. Hopefully, it will make someone's day easier.

[abedurftig]

@ardevd, do you still have this issue or did you find something that worked for you? I face the same issue in a multi-module Gradle project. Thanks.

[ardevd]

Never figured out a way around the issue, no.