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.espresso.Espresso.onView;
  import static androidx.test.espresso.action.ViewActions.slowSwipeLeft;
  import static androidx.test.espresso.action.ViewActions.swipeLeft;
  import static androidx.test.espresso.action.ViewActions.swipeRight;
  import static androidx.test.espresso.assertion.ViewAssertions.matches;
  import static androidx.test.espresso.matcher.ViewMatchers.isDisplayed;
  import static androidx.test.espresso.matcher.ViewMatchers.withId;
  import static androidx.test.espresso.matcher.ViewMatchers.withText;
  
  import androidx.test.core.app.ActivityScenario;
  import androidx.test.espresso.action.ViewActions;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import androidx.test.filters.LargeTest;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /**
   * Demonstrates use of {@link ViewActions#swipeLeft()}, {@link ViewActions#slowSwipeLeft()}, and
   * {@link ViewActions#swipeRight()}.
   */
  @RunWith(AndroidJUnit4.class)
  @LargeTest
  public class SwipeTest {
  
    @Before
    public void setUp() throws Exception {
      ActivityScenario.launch(ViewPagerActivity.class);
    }
  
    @Test
    public void testSwipingThroughViews() {
      // Should be on position 0 to start with.
      onView(withText("Position #0")).check(matches(isDisplayed()));
  
      onView(withId(R.id.pager_layout)).perform(swipeLeft());
      onView(withText("Position #1")).check(matches(isDisplayed()));
  
      onView(withId(R.id.pager_layout)).perform(swipeLeft());
      onView(withText("Position #2")).check(matches(isDisplayed()));
    }
  
    @Test
    public void testSwipingSlowlyThroughViews() {
      // Should be on position 0 to start with.
      onView(withText("Position #0")).check(matches(isDisplayed()));
  
      onView(withId(R.id.pager_layout)).perform(slowSwipeLeft());
      onView(withText("Position #1")).check(matches(isDisplayed()));
  
      onView(withId(R.id.pager_layout)).perform(slowSwipeLeft());
      onView(withText("Position #2")).check(matches(isDisplayed()));
    }
  
    @Test
    public void testSwipingBackAndForward() {
      // Should be on position 0 to start with.
      onView(withText("Position #0")).check(matches(isDisplayed()));
  
      onView(withId(R.id.pager_layout)).perform(swipeLeft());
      onView(withText("Position #1")).check(matches(isDisplayed()));
  
      onView(withId(R.id.pager_layout)).perform(swipeRight());
      onView(withText("Position #0")).check(matches(isDisplayed()));
    }
  }
  