diff -r c87042164cd8 -r b9ad6f933bc9 build.gradle
--- a/build.gradle	Thu Feb 12 21:40:00 2015 +0100
+++ b/build.gradle	Thu Feb 12 21:48:00 2015 +0100
@@ -43,6 +43,7 @@
 }
 
 dependencies {
+    compile 'junit:junit:4.+'
     compile 'com.android.support:support-v4:19.1.0'
     compile 'backport-util-concurrent:backport-util-concurrent:3.1'
     compile 'org.apache.commons:commons-lang3:3.2'