Add Android emulator instrumentation tests to CI

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

.github/workflows/build.yml

@@ -120,6 +120,67 @@ jobs:
           name: test-results
           path: app/build/reports/
 
+  android-emulator-test:
+    name: Android Emulator Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
+      - 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: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Install NDK
+        run: echo "y" | $ANDROID_HOME/cmdline-tools/latest/bin/sdkmanager "ndk;27.2.12479018"
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: x86_64-linux-android
+
+      - name: Cache cargo registry and build
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            app/src/main/rust/qtun/target
+          key: ${{ runner.os }}-cargo-emulator-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-emulator-
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+
+      - name: Build debug APK for tests
+        run: ./gradlew assembleDebug assembleDebugAndroidTest
+
+      - name: Run emulator tests
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 31
+          arch: x86_64
+          emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim
+          disable-animations: true
+          script: ./gradlew connectedAndroidTest
+
+      - name: Upload test results
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: emulator-test-results
+          path: app/build/reports/androidTests/
+
   build:
     name: Build APK
     runs-on: ubuntu-latest