Android Gradle DexException: Multiple dex files define Lorg/hamcrest/Description

Question

com.android.dex.DexException: Multiple dex files define Lorg/hamcrest/Description

occurring while trying to do a debug build/test either via Android

Answer 1

Robolectric 2.3 depends on JUnit 4.8.1 (version explicit). You're importing JUnit 4.10 (version explicit). Hamcrest is probably simply the first of many duplicates that dex is choking on - try changing your JUnit requirement version to 4.8+ (or excluding JUnit from the Robolectric dependency).