Android integration between robolectric + roboguice 3 + mockito. Mocks can be created in tests using the @mock annotation and injected via roboguice. Note This setup relies on having a custom Application class set and having a corresponding TestApplication for Robolectric to load. You should also have roboguice 3 and mockito installed as well

MockitoGuiceModule

/**
 Copyright (c) 2014, Akeem Philbert
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

 Redistributions of source code must retain the above copyright notice,
 this list of conditions and the following disclaimer.
 
 Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the
 documentation and/or other materials provided with the distribution.

 THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY
 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 DAMAGE.
 */
 
package com.example.app.util;

import com.google.inject.AbstractModule;

import java.util.HashMap;
import java.util.Map;
import java.util.Set;


public class MockitoGuiceModule extends AbstractModule {

    private HashMap<Class<?>, Object> bindings;


    public MockitoGuiceModule() {
        super();
        bindings = new HashMap<Class<?>, Object>();
    }

    public void addBinding(Class<?> type, Object object) {
        bindings.put(type, object);
    }

    @Override
    protected void configure() {
        Set<Map.Entry<Class<?>, Object>> entries = bindings.entrySet();
        for (Map.Entry<Class<?>, Object> entry : entries) {
            binder.bind((Class<Object>) entry.getKey()).toInstance(entry.getValue());
        }
    }
}

TestApplication

/**
 Copyright (c) 2014, Akeem Philbert
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

 Redistributions of source code must retain the above copyright notice,
 this list of conditions and the following disclaimer.

 Redistributions in binary form must reproduce the above copyright
 notice, this list of conditions and the following disclaimer in the
 documentation and/or other materials provided with the distribution.

 THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY
 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 DAMAGE.
 */
package com.example.app;

import com.example.app.util.MockitoGuiceModule;

import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.robolectric.Robolectric;
import org.robolectric.TestLifecycleApplication;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

import roboguice.RoboGuice;

/**
 * Test application
 */
public class TestApplication extends Application implements TestLifecycleApplication {


    @Override
    public void beforeTest(Method method) {

    }

    @Override
    public void prepareTest(Object test) {
        TestApplication application = (TestApplication) Robolectric.application;
        MockitoAnnotations.initMocks(test);//initialize all the mocks that were specified using annotations
        
        MockitoGuiceModule mockitoGuiceModule = new MockitoGuiceModule();
        try {
            //get the list of mock objects
            List<Object> mocks = getListOfMocks(test);
            
            //create bindings for all the classes of the mock objects to use the mock object
            for (final Object mock : mocks) {
                mockitoGuiceModule.addBinding(mock.getClass().getSuperclass(), mock);
            }
        } catch (IllegalAccessException e) {

        }
        //override the default roboguice module that does injection with our own module that will inject mock objects
        RoboGuice.overrideApplicationInjector(application,mockitoGuiceModule);
    }

    @Override
    public void afterTest(Method method) {
        RoboGuice.Util.reset();
    }

    /**
     * Get a list of all the mock objects in the test case being run
     * 
     * @param test
     * @return
     * @throws IllegalAccessException
     */
    private List<Object> getListOfMocks(Object test) throws IllegalAccessException {
        final Field[] declaredFields = test.getClass().getDeclaredFields();
        List<Object> objects = new ArrayList<Object>();
        for (Field field : declaredFields) {
            if (field.getAnnotation(Mock.class) != null) {
                field.setAccessible(true);
                objects.add(field.get(test));
            }
        }
        return objects;
    }
}