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path: root/.github/workflows/android-app.yml
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---
name: Android - Build and test
on:
  pull_request:
    paths:
      - '**'
      - '!.github/workflows/**'
      - '.github/workflows/android-app.yml'
      - '!audits/**'
      - '!ci/**'
      - '!dist-assets/**'
      - '!docs/**'
      - '!graphics/**'
      - '!gui/**'
      - '!ios/**'
      - '!scripts/**'
      - '!windows/**'
      - '!**/**.md'

  workflow_dispatch:
    inputs:
      override_container_image:
        description: Override container image
        type: string
        required: false
  # Build if master is updated to ensure up-to-date caches are available
  push:
    branches: [master]
jobs:
  prepare:
    name: Prepare
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Use custom container image if specified
        if: ${{ github.event.inputs.override_container_image != '' }}
        run: echo "inner_container_image=${{ github.event.inputs.override_container_image }}"
          >> $GITHUB_ENV

      - name: Use default container image and resolve digest
        if: ${{ github.event.inputs.override_container_image == '' }}
        run: |
          echo "inner_container_image=$(cat ./building/android-container-image.txt)" >> $GITHUB_ENV

    outputs:
      container_image: ${{ env.inner_container_image }}

  build:
    name: Build app and run unit tests
    needs: prepare
    runs-on: ubuntu-latest
    container:
      image: ${{ needs.prepare.outputs.container_image }}
    steps:
      # Fix for HOME path overridden by GH runners when building in containers, see:
      # https://github.com/actions/runner/issues/863
      - name: Fix HOME path
        run: echo "HOME=/root" >> $GITHUB_ENV

      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Calculate native lib cache hash
        id: native-lib-cache-hash
        shell: bash
        run: |
          non_android_hash="$(git grep --cached -l '' -- ':!android/' \
            | xargs -d '\n' sha1sum \
            | sha1sum \
            | awk '{print $1}')"
          echo "native_lib_hash=$non_android_hash" >> $GITHUB_OUTPUT

      - name: Cache native libraries
        uses: actions/cache@v3
        id: cache-native-libs
        with:
          path: |
            ./android/app/build/extraJni
            ./build/relays.json
          key: android-native-libs-${{ runner.os }}-x86_64-${{ steps.native-lib-cache-hash.outputs.native_lib_hash}}

      - name: Build native libraries
        if: steps.cache-native-libs.outputs.cache-hit != 'true'
        env:
          RUSTFLAGS: --deny warnings
          ABI: x86_64
          TARGET: x86_64-linux-android
          BUILD_TYPE: debug
        run: |
          ARCHITECTURES="$ABI"
          UNSTRIPPED_LIB_PATH="$CARGO_TARGET_DIR/$TARGET/$BUILD_TYPE/libmullvad_jni.so"
          STRIPPED_LIB_PATH="./android/app/build/extraJni/$ABI/libmullvad_jni.so"
          NDK_TOOLCHAIN_STRIP_TOOL="$NDK_TOOLCHAIN_DIR/x86_64-linux-android-strip"
          ./wireguard/build-wireguard-go.sh --android --no-docker
          cargo build --target $TARGET --verbose --package mullvad-jni --features api-override
          cargo run --bin relay_list > build/relays.json
          $NDK_TOOLCHAIN_STRIP_TOOL --strip-debug --strip-unneeded -o "$STRIPPED_LIB_PATH" "$UNSTRIPPED_LIB_PATH"

      - name: Build Android app
        uses: burrunan/gradle-cache-action@v1
        with:
          job-id: jdk11
          arguments: assembleDebug
          gradle-version: wrapper
          build-root-directory: android

      - name: Run unit tests
        uses: burrunan/gradle-cache-action@v1
        with:
          job-id: jdk11
          arguments: testDebugUnitTest
          gradle-version: wrapper
          build-root-directory: android
          execution-only-caches: true

      - name: Assemble instrumented test apk (app)
        uses: burrunan/gradle-cache-action@v1
        with:
          job-id: jdk11
          arguments: assembleAndroidTest
          gradle-version: wrapper
          build-root-directory: android
          execution-only-caches: true

      - name: Assemble instrumented test apk (mockapi)
        uses: burrunan/gradle-cache-action@v1
        with:
          job-id: jdk11
          arguments: :test:mockapi:assemble
          gradle-version: wrapper
          build-root-directory: android
          execution-only-caches: true

      - name: Upload apks
        uses: actions/upload-artifact@v3
        with:
          name: apks
          path: |
            android/app/build/outputs/apk
            android/test/mockapi/build/outputs/apk
          if-no-files-found: error
          retention-days: 1

  instrumented-tests:
    name: Run instrumented tests
    runs-on: [self-hosted, android-emulator]
    timeout-minutes: 30
    needs: [build]
    strategy:
      fail-fast: false
      matrix:
        test-type: [app, mockapi]
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - uses: actions/download-artifact@v3
        with:
          name: apks
          path: android

      - name: Run instrumented test script
        shell: bash -ieo pipefail {0}
        env:
          AUTO_FETCH_TEST_HELPER_APKS: true
        run: |
          ./android/scripts/run-instrumented-tests.sh ${{ matrix.test-type }}

      - name: Upload instrumentation report (${{ matrix.test-type }})
        uses: actions/upload-artifact@v3
        if: always()
        with:
          name: ${{ matrix.test-type }}-instrumentation-report
          path: /tmp/mullvad-${{ matrix.test-type }}-instrumentation-report
          if-no-files-found: ignore
          retention-days: 1