chore: add Kotlin code coverage via JaCoCo#264
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enableAndroidTestCoverage only instruments classes for the androidTest variant, not the regular debug APK. Switch to offline instrumentation via jacococli ant task that rewrites class files after Kotlin compilation. Also fix .ec file pull to use tar for reliability across multiple app restarts.
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Opt-in Kotlin code coverage for
android/files using JaCoCo offline bytecode instrumentation.Activated by passing
-PRive_KotlinCoverage=trueto Gradle.Usage
How it works
android/build.gradleuses JaCoCo ant task to offline-instrument class files after Kotlin compilation, and saves original classes for report generationjacoco-agent.propertieswithoutput=noneprevents the agent from trying to auto-dump to the read-only root filesystemCoverageHelper.ktflushes JaCoCo execution data on a 1s timer and activity lifecycleCoverageInitProviderbootstraps CoverageHelper via a ContentProviderscripts/android-coverage.shpulls .ec files from the emulator via tar and generates reportsResults
8/8 harness test suites pass, 36.3% line coverage (538/1481 lines) across the library.
Non-coverage builds unaffected (BuildConfig flag compiles out coverage bootstrap).