RoboGuice

Personally I can't live without RoboGuice (Guice equivalent for Android) when writing my apps. Makes developer live easier and lets the code more organized. RoboGuice works even better with Robolectric. It allows easily rebind some interfaces or class to its test versions - like WebInterfaces or Executors. There's tutorial how to bind Robolectric and RoboGuice for testing environment but we came with a more clean idea. It's mostly because RoboSpock uses Groovy so we can use some function programming.