Coverage API: jacoco instead of jacocoAdapter

[Sverre Moe]

Publish Coverage from JaCoCo using the new Coverage API:

https://jenkins.io/blog/2018/08/17/code-coverage-api-plugin-1/

It makes a statement in this blog:

publishCoverage adapters: [jacocoAdapter('target/site/jacoco/jacoco.xml')]
You can also use jacoco instead of jacocoAdapter if you didn't install Jacoco-Plugin.

What does this mean? That I could use the jacoco pipeline within publishCoverage:

jacoco classPattern: 'build/classes', execPattern: 'build/jacoco/*.exec'

In order to use the JaCoCo Adapter, I would need to run jacoco to generate the test report as part of my build with Gradle.

./gradlew jacocoTestReport

Then use the output from it in publishCoverage:

publishCoverage adapters: [jacocoAdapter('build/reports/jacoco/test/jacocoTestReport.xml')]

But if the implication of the statement made in the blog is what I think it means, I would not need to run jacocoTestReport.

However the Snippet generator does not allow for it, so I am not sure.

[Ullrich Hafner]

It simply means that you can use the symboled `jacoco` in your pipeline if you do not have the jacoco-plugin installed. Otherwise you need to use the name `jacocoAdapter` (both symbols refer to the same thing). Since the jacoco plugin also provides a step with the symbol `jacoco` your pipeline will have a syntax error (name clash) because you use a symbol that is located in multiple plugins. To be on the save side: always use jacocoAdapter.

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