build: migrate unit test coverage from JaCoCo to Kover - #1776
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Replaces the unmaintained com.mxalbert.gradle:jacoco-android plugin (last released for AGP 8.x) and the hand-rolled JaCoCo report wiring with kotlinx-kover 0.9.9, which supports AGP 9's built-in Kotlin compiler and Kotlin Multiplatform natively. - PublishingConventionPlugin now applies Kover instead of JaCoCo, dropping the classDirectories workaround that pointed at internal AGP intermediate paths. - The KMP modules (library, clustering, heatmaps) get coverage again: it had been silently missing since their KMP migration because the old jacoco.xml report paths were no longer generated. - data: removed the stale direct jacoco plugin and jacocoDebugReport task that still referenced the pre-AGP-9 tmp/kotlin-classes path. - CI now runs koverXmlReportDebug (AGP modules) and koverXmlReportAndroid (KMP modules); report.yml points madrapps/jacoco-report (which supports Kover XML) at the new report paths.
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Summary
Migrates unit test coverage from JaCoCo to kotlinx-kover 0.9.9.
Why:
com.mxalbert.gradle:jacoco-androidplugin is effectively unmaintained (last released for AGP 8.x), which forcedPublishingConventionPluginto hardcode internal AGP intermediate paths (intermediates/built_in_kotlinc/debug) to pick up classes from AGP 9's built-in Kotlin compiler. Kover integrates through AGP's variant APIs, so all of that workaround code is deleted.library,clustering,heatmaps) had no working coverage since their KMP migration:report.ymlpointed atjacoco.xmlfiles that were no longer generated. They now report coverage again.Changes
PublishingConventionPluginappliesorg.jetbrains.kotlinx.koverinstead ofcom.mxalbert.gradle.jacoco-androidand drops the JaCoCoclassDirectoriesworkaround.library,clustering,heatmaps(KMP): apply the Kover plugin directly; the "jacoco needs KMP-aware re-wiring" TODOs are resolved.data: removes the stale directjacocoplugin andjacocoDebugReporttask that still referenced the pre-AGP-9tmp/kotlin-classespath.test.yml,report.yml): runskoverXmlReportDebug(AGP modules) +koverXmlReportAndroid(KMP modules).madrapps/jacoco-reportsupports Kover XML natively, so only the report paths changed; the coverage gates (26% overall / 60% changed files) are unchanged.Verification
Full CI command
./gradlew build koverXmlReportDebug koverXmlReportAndroid --stacktracepasses locally (11m 49s). Line coverage per module from the generated Kover reports: