Using the ShadowConnectivityManager in Robolectric

SomeActivityTest.java

public class SomeActivityTest {

  SomeActivity activity;

  @Before
  public void setUp() {
    activity = new SomeActivity();

    ConnectivityManager connectivityManager = getConnectivityManager();
    Robolectric.shadowOf(connectivityManager).setNetworkInfo(TYPE_MOBILE, new NetworkInfo());
  }

  @Test
  public void itDoesNotBlowUp() {
    createActivity();

    // validate something here
  }

  private void createActivity() {
    Robolectric.shadowOf(activity).create();
  }

  private ConnectivityManager getConnectivityManager() {
     return (ConnectivityManager) Robolectric.application.getSystemService(Context.CONNECTIVITY_SERVICE);
  }

}