Robolectric PhoneWindow test error example. Pull request: https://github.com/robolectric/robolectric/pull/659

AppCompatTest.java

package com.chuze.ui.activity.test;

import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.robolectric.Robolectric;
import org.robolectric.RobolectricTestRunner;

import static org.fest.assertions.api.Assertions.*;

@RunWith(RobolectricTestRunner.class)
public class AppCompatTest {

  /** Activity under the test. */
  private ActionBarActivity activity;

  @Before
  public void create() {
    activity = Robolectric.buildActivity(ActionBarActivity.class).attach().create().get();
  }

  @Test
  public void activityShouldBeCreated() {
    assertThat(activity).isNotNull();
  }

  @Test
  public void shouldChangeDisplayOptions() {
    activity.getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_HOME_AS_UP | ActionBar.DISPLAY_USE_LOGO);
    assertThat(activity.getSupportActionBar().getDisplayOptions()).isEqualTo(ActionBar.DISPLAY_HOME_AS_UP | ActionBar.DISPLAY_USE_LOGO);
  }

  @Test
  public void shouldChangeTitle() {
    activity.getSupportActionBar().setTitle("custom title");
    assertThat(activity.getTitle()).isEqualTo("custom title");
  }

}