build: migrate unit test coverage from JaCoCo to Kover - #994
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Replaces the manual JaCoCo wiring in PublishingConventionPlugin with kotlinx-kover 0.9.9. The old jacocoTestReport task hardcoded AGP 9 internal intermediate paths (intermediates/built_in_kotlinc) to work around JaCoCo not understanding the built-in Kotlin compiler output; Kover integrates through AGP's variant APIs so none of that is needed. Also removes the unused com.mxalbert.gradle:jacoco-android classpath dependency (last released for AGP 8.x). CI now runs koverXmlReportDebug for the library modules. The instrumented-test coverage in instrumentation-test.yml is unchanged: it uses AGP's built-in on-device JaCoCo, which Kover does not cover.
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Summary
Migrates unit test coverage from JaCoCo to kotlinx-kover 0.9.9.
Why: the
jacocoTestReporttask inPublishingConventionPluginhardcoded AGP 9 internal intermediate paths (intermediates/built_in_kotlinc/debug) to work around JaCoCo not understanding the built-in Kotlin compiler output. Those paths are implementation details that can break on any AGP update. Kover (first-party JetBrains, actively maintained against AGP 9) integrates through AGP's variant APIs, so the manual report wiring is deleted. The unusedcom.mxalbert.gradle:jacoco-androidclasspath dependency (last released for AGP 8.x) is removed as well.Changes
PublishingConventionPluginappliesorg.jetbrains.kotlinx.koverwithandroidGeneratedClasses()excluded, replacing the hand-rolledjacocoTestReporttask.test.ymlrunskoverXmlReportDebuginstead ofjacocoTestReport.instrumentation-test.yml(createDebugCoverageReportonmaps-app) uses AGP's built-in on-device JaCoCo, which Kover does not replace, so it stays as is.Verification
Full CI command
./gradlew build koverXmlReportDebug -x :maps-app:generateDebugScreenshotTestConfig -x :maps-app:generateReleaseScreenshotTestConfig --stacktracepasses locally (11m 51s). Kover reports generate for all three library modules;maps-compose-utils(the only module with host unit tests) shows captured coverage, and the modules without host tests report 0% exactly as JaCoCo did.