AndroidUnitTest.java

package com.fernandocejas.frodo;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources;
import java.util.HashMap;
import java.util.Map;
import org.junit.Rule;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runner.RunWith;
import org.junit.runners.model.Statement;
import org.mockito.MockitoAnnotations;
import org.robolectric.RobolectricGradleTestRunner;
import org.robolectric.RuntimeEnvironment;
import org.robolectric.annotation.Config;
import org.robolectric.fakes.RoboSharedPreferences;

/**
 * Base class for Robolectric tests.
 * Inherit from this class to create a test.
 */
@RunWith(RobolectricGradleTestRunner.class)
@Config(constants = BuildConfig.class,
    application = ApplicationStub.class,
    sdk = 21)
public abstract class AndroidUnitTest {
  @Rule public TestRule injectMocksRule = new TestRule() {
    @Override
    public Statement apply(Statement base, Description description) {
      MockitoAnnotations.initMocks(AndroidUnitTest.this);
      return base;
    }
  };

  protected static Context context() {
    return RuntimeEnvironment.application;
  }

  protected static Resources resources() {
    return context().getResources();
  }

  protected static SharedPreferences sharedPreferences(String name, int mode) {
    return new RoboSharedPreferences(new HashMap<String, Map<String, Object>>(), name, mode);
  }
}