reusable workflow for android tests

.github/actions/run-android-emulator-tests/action.yml

@@ -0,0 +1,66 @@
+name: "Run Android emulator tests"
+description: "Setups android emulator caching and running"
+inputs:
+  api-level:
+    description: Android API level for testing
+    required: true
+  cache-disabled:
+    description: When 'true', all caching is disabled. No entries will be written to or read from the cache.
+    required: false
+    default: false
+  cache-read-only:
+    description: |
+      When 'true', existing entries will be read from the cache but no entries will be written.
+      By default this value is 'false' for workflows on the `dev` branch and 'true' for workflows on other branches.
+    required: false
+    default: ${{ github.ref_name != 'dev' }}
+  additional-arguments:
+    description: Additional arguments for running connectedCheck
+    required: false
+    default: ''
+runs:
+  using: "composite"
+  steps:
+    - name: Build tests
+      uses: gradle/gradle-build-action@v2
+      with:
+        arguments: packageDebugAndroidTest --continue --configuration-cache
+        cache-disabled: ${{ inputs.cache-disabled }}
+        cache-read-only: ${{ inputs.cache-read-only }}
+
+    #TODO: make AVD cache respect disabled and read-only (https://github.com/actions/cache/blob/main/save/README.md)
+    - name: AVD cache
+      uses: actions/cache@v3
+      id: avd-cache
+      with:
+        path: |
+          ~/.android/avd/*
+          ~/.android/adb*
+        key: avd-${{ inputs.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:
+        force-avd-creation: false
+        emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+        arch: x86_64
+        api-level: ${{ inputs.api-level }}
+        script: echo "Generated AVD snapshot for caching."
+
+    - name: Run tests
+      uses: reactivecircus/android-emulator-runner@v2
+      with:
+        force-avd-creation: false
+        emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none -no-snapshot-save
+        arch: x86_64
+        api-level: ${{ inputs.api-level }}
+        script: ./gradlew connectedCheck --continue --configuration-cache ${{ inputs.additional-arguments }}
+
+    # Android test failures are not available in gradle build scans
+    - name: Upload test reports
+      if: success() || failure()
+      uses: actions/upload-artifact@v3
+      with:
+        name: test-reports-${{ inputs.api-level }}
+        path: '**/build/reports/androidTests'

.github/workflows/build-android.yml

@@ -16,24 +16,6 @@ jobs:
       - uses: actions/checkout@v3
       - uses: ./.github/actions/setup-gradle
 
-      - name: Build tests
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: |
-            packageDebugAndroidTest
-            --continue
-            --configuration-cache
-
-      - name: Run tests
-        uses: reactivecircus/android-emulator-runner@v2
+      - uses: ./.github/actions/run-android-emulator-tests
         with:
           api-level: ${{ matrix.api-level }}
-          arch: x86_64
-          script: ./gradlew connectedCheck --continue --configuration-cache
-
-      - name: Upload test reports
-        if: success() || failure()
-        uses: actions/upload-artifact@v3
-        with:
-          name: test-reports
-          path: '**/build/reports/androidTests'