content: /*
   * Copyright (C) 2014 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package androidx.test.ui.app;
  
  import static androidx.test.core.app.ApplicationProvider.getApplicationContext;
  import static androidx.test.espresso.Espresso.onView;
  import static androidx.test.espresso.Espresso.pressBack;
  import static androidx.test.espresso.Espresso.pressBackUnconditionally;
  import static androidx.test.espresso.assertion.ViewAssertions.matches;
  import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
  import static androidx.test.espresso.matcher.ViewMatchers.withText;
  import static org.junit.Assert.fail;
  
  import android.content.Intent;
  import androidx.core.app.TaskStackBuilder;
  import androidx.test.espresso.NoActivityResumedException;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  @RunWith(AndroidJUnit4.class)
  public class TaskStackTest {
  
    @Before
    public void setUp() throws Exception {
      TaskStackBuilder.create(getApplicationContext())
          .addNextIntent(new Intent(getApplicationContext(), DrawerActivity.class))
          .addNextIntent(new Intent(getApplicationContext(), ToolbarActivity.class))
          .addNextIntent(new Intent(getApplicationContext(), DisplayActivity.class))
          .startActivities();
    }
  
    @Test
    public void testTaskStack() {
      onView(withText("display activity")).check(matches(isDisplayed()));
      pressBack();
      onView(withText("tool bar activity")).check(matches(isDisplayed()));
      pressBack();
      onView(withText("drawer activity")).check(matches(isDisplayed()));
    }
  
    @Test
    public void testBackUnconditionallyExitsAppAndDoesNotThrow() {
      onView(withText("display activity")).check(matches(isDisplayed()));
      pressBack();
      pressBack();
      pressBackUnconditionally();
    }
  }
  