Config for gitlab ci android with unit tests and instrumented tests

.gitlab-ci.yml

image: openjdk:8-jdk

variables:
  ANDROID_COMPILE_SDK: "28"
  ANDROID_BUILD_TOOLS: "28.0.3"
  SDK_TOOLS: "4333796" # from https://developer.android.com/studio/#command-tools
  EMULATOR_VERSION: "24"
  
before_script:
  - wget --quiet --output-document=android-sdk.zip https://dl.google.com/android/repository/sdk-tools-linux-${SDK_TOOLS}.zip
  - unzip -q android-sdk.zip -d android-sdk-linux
  - rm android-sdk.zip

  - mkdir android-sdk-linux/licenses
  - printf "8933bad161af4178b1185d1a37fbf41ea5269c55\nd56f5187479451eabf01fb78af6dfcb131a6481e" > android-sdk-linux/licenses/android-sdk-license
  - printf "84831b9409646a918e30573bab4c9c91346d8abd" > android-sdk-linux/licenses/android-sdk-preview-license
  - android-sdk-linux/tools/bin/sdkmanager --update > update.log
  - echo y | android-sdk-linux/tools/bin/sdkmanager "platforms;android-${ANDROID_COMPILE_SDK}" "build-tools;${ANDROID_BUILD_TOOLS}" "extras;google;m2repository" "extras;android;m2repository" > installPlatform.log

  - export ANDROID_HOME=$PWD/android-sdk-linux
  - export PATH=$PATH:$PWD/android-sdk-linux/platform-tools/
  - chmod +x ./gradlew

stages:
  - build
  - test
  
build:
  stage: build
  script:
    - ./gradlew assembleDebug
  artifacts:
    paths:
    - app/build/outputs/

unitTests:
  stage: test
  script:
    - ./gradlew test

instrumentedTests:
  stage: test
  script:
    - wget --quiet --output-document=android-wait-for-emulator https://raw.githubusercontent.com/travis-ci/travis-cookbooks/0f497eb71291b52a703143c5cd63a217c8766dc9/community-cookbooks/android-sdk/files/default/android-wait-for-emulator
    - chmod +x android-wait-for-emulator
    - android-sdk-linux/tools/bin/sdkmanager --update > update.log
    - android-sdk-linux/tools/bin/sdkmanager "platform-tools" "emulator" "system-images;android-${EMULATOR_VERSION};default;armeabi-v7a"  > installEmulator.log
    - echo no | android-sdk-linux/tools/bin/avdmanager create avd -n test -k "system-images;android-${EMULATOR_VERSION};default;armeabi-v7a"
    - android-sdk-linux/emulator/emulator -avd test -no-window -no-audio &
    - ./android-wait-for-emulator
    - adb shell input keyevent 82
    - ./gradlew connectedCheck