RFC - feat: add Android native code coverage support#124
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Add @react-native-harness/coverage-android package with JaCoCo offline instrumentation. A Gradle init script instruments Kotlin/Java classes at build time, and the coverage collector pulls .ec files from the device and generates lcov reports at test time.
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mfazekas
changed the title
- Use allprojects+afterEvaluate instead of projectsEvaluated (too late for source sets)
- Use configureEach for lazily-registered compile tasks
- Fix manifest template to use double-quoted string for ${applicationId}
- Remove redundant BuildConfig guard from CoverageHelper
- Set jacocoCli transitive=false
- Remove ANDROID_COVERAGE_GUIDE.md from repo
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Summary
Adds
@react-native-harness/coverage-androidpackage for collecting Kotlin/Java code coverage from Android apps during harness test runs, using JaCoCo offline instrumentation.packages/coverage-android/package with Gradle init script, runtime helpers (CoverageHelper + CoverageInitProvider), and jacoco-agent.propertiesplatform-androidpulls.ecfiles via adb, merges with jacococli.jar (stashed during build), generates XML, converts to lcovcoverage.native.android.modulesSee
ANDROID_COVERAGE_GUIDE.mdfor usage instructions.Test plan
--init-scriptand verify$jacocoInitin class files--coverage --harnessRunner androidnative-coverage.lcovoutput with non-zero coverage