Run emulator tests in CI (#269)

Author: simolus3

.github/workflows/test.yml

@@ -74,3 +74,55 @@ jobs:
         path: |
           **/build/reports/
           **/build/test-results/
+
+  android_emulator:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    env:
+      AVD_NAME: ubuntu-avd-x86_64-31
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - name: Validate Gradle Wrapper
+        uses: gradle/actions/wrapper-validation@v4
+      - uses: actions/cache@v4
+        with:
+          path: ~/.konan
+          key: ${{ runner.os }}-${{ hashFiles('**/.lock') }}
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-encryption-key: ${{ secrets.GRADLE_ENCRYPTION_KEY }}
+      - name: AVD Cache
+        uses: actions/cache@v4
+        id: avd-cache
+        with:
+          path: |
+            ~/.android/avd/*
+            ~/.android/adb*
+          key: avd-31
+
+      # https://github.com/ReactiveCircus/android-emulator-runner?tab=readme-ov-file#usage--examples
+      - name: Enable KVM
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+
+      - name: emulator tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 31
+          force-avd-creation: false
+          target: google_apis
+          arch: x86_64
+          disable-animations: false
+          avd-name: $AVD_NAME
+          emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+          script: ./gradlew --scan core-tests-android:connectedCheck