Run the tests in travis

Use the gradle wrapper instead of gradle for both
the build and the test run.
Start an emulator (Api19) and run the tests inside it.

Author: ErjanGavalji

.travis.yml

@@ -14,12 +14,19 @@ android:
         - tools
 
         - build-tools-22.0.1
-        - android-22
+        - android-19
 
         - extra-android-support
         - extra-android-m2repository
 
-        - sys-img-x86_64-android-22
+        - sys-img-armeabi-v7a-android-19
+
+before_cache:
+        - rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
+cache:
+    directories:
+        - $HOME/.gradle/caches/
+        - $HOME/.gradle/wrapper/
 before_install:
     - sed -i 's/[email protected]:/https:\/\/github.com\//' .gitmodules
     - git submodule update --init --recursive
@@ -29,6 +36,12 @@ before_install:
     - export ANDROID_NDK_HOME=`pwd`/android-ndk-$NDK_VERSION
     - export PATH=${PATH}:${ANDROID_NDK_HOME}
 
+before_script:
+    - echo no | android create avd --force -n Arm19 -t android-19 -b armeabi-v7a -c 12M
+    - emulator -avd Arm19 -no-skin -no-audio -no-window &
+    - android-wait-for-emulator
+
 script:
-    - gradle packar -PPACKAGE_VERSION=5.5.5
+    - ./gradlew packar -i -PPACKAGE_VERSION=5.5.5 -PcompileSdk=android-19 -PsupportVersion=19.0.0 --stacktrace
+    - ./gradlew runtest -PenableTest -PcompileSdk=android-19 -PsupportVersion=19.0.0 -PtargetSdk=19 --stacktrace