circleci.yml

 machine:
   environment:
     _JAVA_OPTIONS: "-Xms512m -Xmx1024m"
     ANDROID_HOME: /usr/local/android-sdk-linux
     GRADLE_OPTS: '-Dorg.gradle.jvmargs="-Xmx2048m -XX:+HeapDumpOnOutOfMemoryError"'

 dependencies:
   pre:
     - echo y | android update sdk --no-ui --all --filter tools,platform-tools,android-25
     - echo y | android update sdk --no-ui --all --filter build-tools-25.0.2
     - echo y | android update sdk --no-ui --all --filter android-25
     - echo y | android update sdk --no-ui --all --filter tools
     - echo y | android update sdk --no-ui --all --filter extra-android-m2repository
     - echo y | android update sdk --no-ui --all --filter extra-android-support
     - echo y | android update sdk --no-ui --all --filter extra-google-google_play_services
     - echo y | android update sdk --no-ui --all --filter extra-google-m2repository

   override:
     - ANDROID_HOME=/usr/local/android-sdk-linux ./gradlew dependencies || true

 test:
   override:
     # start lint
     #- ./gradlew lint
     # start unit tests
     - ./gradlew test
     # start the emulator
     - emulator -avd circleci-android24 -no-window:
         background: true
         parallel: true
     # wait for it to have booted
     - circle-android wait-for-boot
     # run tests  against the emulator.
     - ./gradlew connectedAndroidTest
     # copy lint outputs to artifacts
     - cp -r app/build/reports/lint-* $CIRCLE_ARTIFACTS
     # copy the build outputs to artifacts
     - cp -r app/build/outputs/apk/* $CIRCLE_ARTIFACTS
     # copy the test results to the test results directory.
     - cp -r app/build/outputs/androidTest-results/* $CIRCLE_TEST_REPORTS