add caching & scaffold matrix

.github/workflows/integration-tests.yml

@@ -5,6 +5,9 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        api-level: [33] # TODO: add more api levels to test
     env:
       MAILOSAUR_API_KEY: ${{ secrets.MAILOSAUR_API_KEY }}
     steps:
@@ -23,9 +26,35 @@ jobs:
           sudo udevadm control --reload-rules
           sudo udevadm trigger --name-match=kvm
 
+      - name: Gradle cache
+        uses: gradle/actions/setup-gradle@v3
+
+      - name: AVD cache
+        uses: actions/cache@v4
+        id: avd-cache
+        with:
+          path: |
+            ~/.android/avd/*
+            ~/.android/adb*
+          key: avd-${{ matrix.api-level }}
+
+      - name: create AVD and generate snapshot for caching
+        if: steps.avd-cache.outputs.cache-hit != 'true'
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: ${{ matrix.api-level }}
+          force-avd-creation: false
+          emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+          disable-animations: false
+          arch: x86_64
+          script: echo "Generated AVD snapshot for caching."
+
       - name: run tests
         uses: reactivecircus/android-emulator-runner@v2
         with:
-          api-level: 33
+          api-level: ${{ matrix.api-level }}
+          force-avd-creation: false
+          emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+          disable-animations: true
           arch: x86_64
           script: ./gradlew connectedDebugAndroidTest