Add coverage reports for UNIT tests

.github/workflows/ci.yml

@@ -32,6 +32,13 @@ jobs:
       - name: Run Tests
         run: yarn test
 
+      - name: Upload coverage reports
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-report
+          path: coverage/
+
       - name: Assert that every file that should be public has been exported
         run: ./scripts/assert_export.sh
 
@@ -99,9 +106,28 @@ jobs:
             -scheme "sample" \
             -sdk iphonesimulator \
             -destination 'platform=iOS Simulator,OS=latest,name=iPhone 16 Pro' \
+            -enableCodeCoverage YES \
+            -resultBundlePath TestResults.xcresult \
             -only-testing:sampleTests \
             test | bundle exec xcpretty && exit ${PIPESTATUS[0]}
 
+      - name: Install Slather
+        run: gem install slather
+
+      - name: Generate iOS HTML Report
+        working-directory: ./sample/ios
+        run: |
+          slather coverage --html --output-directory html-report --scheme sample --workspace sample.xcworkspace sample.xcodeproj
+
+      - name: Upload iOS coverage
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: ios-coverage
+          path: |
+            sample/ios/TestResults.xcresult
+            sample/ios/html-report/
+
   test-android:
     needs: test-rn
     runs-on: macOS-14
@@ -134,4 +160,11 @@ jobs:
 
       - name: Run SDK Unit Tests
         working-directory: ./sample/android
-        run: ./gradlew :react-native-usercentrics:test
+        run: ./gradlew :react-native-usercentrics:koverXmlReport :react-native-usercentrics:koverHtmlReport
+
+      - name: Upload Android coverage
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: android-coverage
+          path: android/build/reports/kover/

android/build.gradle.kts

@@ -11,6 +11,7 @@ val isHermesEnabled = BooleanProperty("hermesEnabled")
 plugins {
     id("com.android.library")
     id("kotlin-android")
+    id("org.jetbrains.kotlinx.kover") version "0.9.1"
 }
 
 if (isNewArchitectureEnabled) {
@@ -37,6 +38,11 @@ android {
 
     }
 
+    buildTypes {
+        getByName("debug") {
+        }
+    }
+
     compileOptions {
         sourceCompatibility = JavaVersion.VERSION_17
         targetCompatibility = JavaVersion.VERSION_17

package.json

@@ -78,6 +78,16 @@
       "jsx",
       "json",
       "node"
+    ],
+    "collectCoverage": true,
+    "collectCoverageFrom": [
+      "src/**/*.{ts,tsx}",
+      "!src/**/*.d.ts"
+    ],
+    "coverageDirectory": "coverage",
+    "coverageReporters": [
+      "text",
+      "lcov"
     ]
   },
   "directories": {