We still might be flaky; retry entire test run if so.

.github/workflows/tests.yml

@@ -38,6 +38,7 @@ jobs:
           disableRateLimiting: true
           public_baseurl: "http://10.0.2.2:8080/"
       - name: Run all the codecoverage tests at once
+        id: tests
         uses: reactivecircus/android-emulator-runner@v2
         with:
           api-level: 28
@@ -48,8 +49,20 @@ jobs:
           disable-animations: true
           emulator-build: 7425822
           script: ./gradlew theCodeCoverageReport --stacktrace $CI_GRADLE_ARG_PROPERTIES
+      - name: Run all the codecoverage tests at once (retry if emulator failed)
+        uses: reactivecircus/android-emulator-runner@v2
+        if: always() and steps.tests.outcome == 'failure' # don't run if previous step succeeded.
+        with:
+          api-level: 28
+          arch: x86
+          profile: Nexus 5X
+          force-avd-creation: false
+          emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
+          disable-animations: true
+          emulator-build: 7425822
+          script: ./gradlew theCodeCoverageReport --stacktrace $CI_GRADLE_ARG_PROPERTIES
       - run: ./gradlew sonarqube $CI_GRADLE_ARG_PROPERTIES
-        if: always() # upload even if test suite fails, will be missing coverage report (but will also report coverage drop and quality gate will kick in)
+        if: always() # we may have failed a previous step and retried, that's OK
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}