Unresolved reference BuildConfig when upgrading to 1.5.0

Hi, I’ve been using this library using AGP 4 and Root Coverage Plugin 1.4.0. But after I update the AGP and kotlin version to this version (see version below) I got an error that said Unresolved reference: BuildConfig. The unresolved BuildConfig causes an error when I generate jacoco report or assembleDebug the app. Fyi I saved the value of BuildConfigField at shared gradle and apply it to each module, is that affect this issue?. Also, when I downgrade to 1.4.0 the error is gone, generating a report is successful but causes [ant:jacocoReport] Execution data for class 'xxx' does not match.

This is the version:

AGP: 7.2.0
Kotlin Gradle Plugin: 1.6.21
Jacoco: 0.8.6

This is the stackrace:

org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':core:compileDebugKotlin'.
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.lambda$executeIfValid$1(ExecuteActionsTaskExecuter.java:145)
        at org.gradle.internal.Try$Failure.ifSuccessfulOrElse(Try.java:282)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeIfValid(ExecuteActionsTaskExecuter.java:143)
        at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:131)
        at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:77)
        at org.gradle.api.internal.tasks.execution.FinalizePropertiesTaskExecuter.execute(FinalizePropertiesTaskExecuter.java:46)
        at org.gradle.api.internal.tasks.execution.ResolveTaskExecutionModeExecuter.execute(ResolveTaskExecutionModeExecuter.java:51)
        at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:57)
        at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:56)
        

[MirzaUkas]

After upgrading to 1.5.1, it works like a charm! Thanks @Rolf-Smit

[Rolf-Smit]

Did some digging, I found that I can no longer reproduce this when I remove this line:

https://github.com/NeoTech-Software/Android-Root-Coverage-Plugin/blob/0b28266b2737d10adaa3804ad9a056caeb1ef992/plugin/src/main/kotlin/org/neotech/plugin/rootcoverage/RootCoveragePlugin.kt#L179

But obviously this line is needed for code coverage to work. So while it fixes the BuildConfig problem, it breaks code coverage.

I suspect the issue is in the variant.sources.java.all part. This is a new public but unstable API to get the Java source locations. Release 1.4 of this plugin was using an older (unofficial) method to get the Java sources. For some reason calling this API results in the BuildConfig file to disappear. I updated to AGP version 7.3.0-beta01 and by doing so the problem was gone.

Conclusion: variant.sources.java.all is broken in AGP version 7.2 and causes class files to disappear (not generated?). In AGP 7.3.0-beta01 this issue is not present.

Solution: There are 2 things possible, the quick and easy is to update to AGP version 7.3.0-beta01 but not everyone might be able to do so. The other (more difficult) solution is to create a hot-fix for this release where I change to code so it uses the old (unofficial) method to get the Java sources. However this is not as easy as one might think, since in release 1.5 I changed the whole plugin setup to use official APIs only.

TLDR: This is potentially a bug in AGP 7.2, I’m looking to workaround this.