Here is how you setup RoboGuice with Robolectric, and force injection on test class members.
// Setup Module
RoboGuice.setBaseApplicationInjector(Robolectric.application, RoboGuice.DEFAULT_STAGE, Modules.override(RoboGuice.newDefaultRoboModule(Robolectric.application)).with(new MyModule()));
// Get an Injector instance
injector = RoboGuice.getInjector(Robolectric.application);
// Inject properties on test class members (Marked with @Inject)
injector.injectMembers(this);
Here is how you initialize an activity when using Robolectric
LoginActivity activity = Robolectric.buildActivity(LoginActivity.class).create().get();