content: package de.test.antennapod.ui;
  
  import android.content.Intent;
  import androidx.test.espresso.intent.rule.IntentsTestRule;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import de.danoeh.antennapod.R;
  import de.danoeh.antennapod.activity.MainActivity;
  import de.danoeh.antennapod.ui.screen.queue.QueueFragment;
  import de.test.antennapod.EspressoTestUtils;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  import static androidx.test.espresso.Espresso.onView;
  import static androidx.test.espresso.action.ViewActions.click;
  import static androidx.test.espresso.matcher.ViewMatchers.withClassName;
  import static androidx.test.espresso.matcher.ViewMatchers.withText;
  import static de.test.antennapod.NthMatcher.first;
  import static org.hamcrest.CoreMatchers.allOf;
  import static org.hamcrest.CoreMatchers.endsWith;
  
  /**
   * User interface tests for queue fragment.
   */
  @RunWith(AndroidJUnit4.class)
  public class QueueFragmentTest {
  
      @Rule
      public IntentsTestRule<MainActivity> activityRule = new IntentsTestRule<>(MainActivity.class, false, false);
  
      @Before
      public void setUp() {
          EspressoTestUtils.clearPreferences();
          EspressoTestUtils.clearDatabase();
          EspressoTestUtils.setLaunchScreen(QueueFragment.TAG);
          activityRule.launchActivity(new Intent());
      }
  
      @Test
      public void testLockEmptyQueue() {
          onView(first(EspressoTestUtils.actionBarOverflow())).perform(click());
          onView(withText(R.string.lock_queue)).perform(click());
          onView(allOf(withClassName(endsWith("Button")), withText(R.string.lock_queue))).perform(click());
          onView(first(EspressoTestUtils.actionBarOverflow())).perform(click());
          onView(withText(R.string.lock_queue)).perform(click());
      }
  
      @Test
      public void testSortEmptyQueue() {
          onView(first(EspressoTestUtils.actionBarOverflow())).perform(click());
          onView(withText(R.string.sort)).perform(click());
          onView(withText(R.string.random)).perform(click());
      }
  
      @Test
      public void testKeepEmptyQueueSorted() {
          onView(first(EspressoTestUtils.actionBarOverflow())).perform(click());
          onView(withText(R.string.sort)).perform(click());
          onView(withText(R.string.keep_sorted)).perform(click());
      }
  }
  