Merge pull request #83 from Project-ARTist/travis_emulator_ui_tests

Travis: Setup Emulator to run UI tests (fixes #81)

.travis.yml

@@ -1,27 +1,14 @@
 language: android
 android:
   components:
-    # Uncomment the lines below if you want to
-    # use the latest revision of Android SDK Tools
     - tools
     # The BuildTools version used by your project
-    - build-tools-26.0.1
+    - build-tools-25.0.3
     - platform-tools
     - tools # Duplicate `tools` entry is by reason
 
     # The SDK version used to compile your project
-    - android-26
-
-    # Additional components
-    # - extra-google-google_play_services
-    # - extra-google-m2repository
-    # - extra-android-m2repository
-    # - addon-google_apis-google-19
-
-    # Specify at least one system image,
-    # if you need to run emulator(s) during your tests
-    # - sys-img-armeabi-v7a-android-22
-    # - sys-img-armeabi-v7a-android-17
+    - android-25
 
 before_cache:
   - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
@@ -33,11 +20,17 @@ cache:
     - $HOME/.gradle/wrapper/
     - $HOME/.android/build-cache
 
+# Install Emulator and android images
 install:
-  # List and delete unnecessary components to free space
-  - sdkmanager --list || true
-  - echo yes | sdkmanager "extras;m2repository;com;android;support;constraint;constraint-layout;1.0.2"
-  - echo yes | sdkmanager "extras;m2repository;com;android;support;constraint;constraint-layout-solver;1.0.2"
+  - echo y | sdkmanager "emulator"
+  - echo y | sdkmanager "system-images;android-25;google_apis;armeabi-v7a"
+
+# Emulator Management: Create, Start and Wait (use latest emulator)
+before_script:
+  - echo no | avdmanager create avd -f -n android-25 -k "system-images;android-25;google_apis;armeabi-v7a"
+  - PATH="${ANDROID_HOME}emulator:${PATH}" && emulator -no-accel -no-audio -no-window -gpu swiftshader_indirect @android-25 &
+  - android-wait-for-emulator
+  - adb shell input keyevent 82 &
 
 script:
 - ./gradlew build connectedCheck