content: /*
   * Copyright (C) 2015 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 com.example.android.testing.espresso.DataAdapterSample;
  
  import androidx.test.ext.junit.rules.ActivityScenarioRule;
  import org.junit.Before;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  import androidx.test.core.app.ActivityScenario;
  import androidx.test.espresso.DataInteraction;
  import androidx.test.espresso.Espresso;
  import androidx.test.espresso.action.ViewActions;
  import androidx.test.espresso.matcher.ViewMatchers;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import androidx.test.filters.LargeTest;
  
  import static androidx.test.espresso.Espresso.onData;
  import static androidx.test.espresso.Espresso.onView;
  import static androidx.test.espresso.action.ViewActions.click;
  import static androidx.test.espresso.assertion.ViewAssertions.doesNotExist;
  import static androidx.test.espresso.assertion.ViewAssertions.matches;
  import static androidx.test.espresso.matcher.ViewMatchers.isChecked;
  import static androidx.test.espresso.matcher.ViewMatchers.isCompletelyDisplayed;
  import static androidx.test.espresso.matcher.ViewMatchers.withId;
  import static androidx.test.espresso.matcher.ViewMatchers.withText;
  import static org.hamcrest.Matchers.equalTo;
  import static org.hamcrest.Matchers.hasEntry;
  import static org.hamcrest.Matchers.is;
  
  /**
   * Tests to verify that the behavior of {@link LongListActivity} is correct.
   * <p>
   * Note that in order to scroll the list you shouldn't use {@link ViewActions#scrollTo()} as
   * {@link Espresso#onData(org.hamcrest.Matcher)} handles scrolling.</p>
   *
   * @see #onRow(String)
   */
  @RunWith(AndroidJUnit4.class)
  @LargeTest
  public class LongListActivityTest {
  
      private static final String TEXT_ITEM_30 = "item: 30";
  
      private static final String TEXT_ITEM_30_SELECTED = "30";
  
      private static final String TEXT_ITEM_60 = "item: 60";
  
      // Match the last item by matching its text.
      private static final String LAST_ITEM_ID = "item: 99";
  
      /**
       * Use {@link ActivityScenarioRule} to create and launch the activity under test. This is a
       * replacement for {@link androidx.test.rule.ActivityTestRule}.
       */
      @Rule
      public ActivityScenarioRule<LongListActivity> rule = new ActivityScenarioRule<>(
          LongListActivity.class);
  
      /**
       * Test that the list is long enough for this sample, the last item shouldn't appear.
       */
      @Test
      public void lastItem_NotDisplayed() {
          // Last item should not exist if the list wasn't scrolled down.
          onView(withText(LAST_ITEM_ID)).check(doesNotExist());
      }
  
      /**
       * Check that the item is created. onData() takes care of scrolling.
       */
      @Test
      public void list_Scrolls() {
          onRow(LAST_ITEM_ID).check(matches(isCompletelyDisplayed()));
      }
  
      /**
       * Clicks on a row and checks that the activity detected the click.
       */
      @Test
      public void row_Click() {
          // Click on one of the rows.
          onRow(TEXT_ITEM_30).onChildView(withId(R.id.rowContentTextView)).perform(click());
  
          // Check that the activity detected the click on the first column.
          onView(ViewMatchers.withId(R.id.selection_row_value))
                  .check(matches(withText(TEXT_ITEM_30_SELECTED)));
      }
  
      /**
       * Checks that a toggle button is checked after clicking on it.
       */
      @Test
      public void toggle_Click() {
          // Click on a toggle button.
          onRow(TEXT_ITEM_30).onChildView(withId(R.id.rowToggleButton)).perform(click());
  
          // Check that the toggle button is checked.
          onRow(TEXT_ITEM_30).onChildView(withId(R.id.rowToggleButton)).check(matches(isChecked()));
      }
  
      /**
       * Make sure that clicking on the toggle button doesn't trigger a click on the row.
       */
      @Test
      public void toggle_ClickDoesntPropagate() {
          // Click on one of the rows.
          onRow(TEXT_ITEM_30).onChildView(withId(R.id.rowContentTextView)).perform(click());
  
          // Click on the toggle button, in a different row.
          onRow(TEXT_ITEM_60).onChildView(withId(R.id.rowToggleButton)).perform(click());
  
          // Check that the activity didn't detect the click on the first column.
          onView(ViewMatchers.withId(R.id.selection_row_value))
                  .check(matches(withText(TEXT_ITEM_30_SELECTED)));
      }
  
      /**
       * Uses {@link Espresso#onData(org.hamcrest.Matcher)} to get a reference to a specific row.
       * <p>
       * Note: A custom matcher can be used to match the content and have more readable code.
       * See the Custom Matcher Sample.
       * </p>
       *
       * @param str the content of the field
       * @return a {@link DataInteraction} referencing the row
       */
      private static DataInteraction onRow(String str) {
          return onData(hasEntry(equalTo(LongListActivity.ROW_TEXT), is(str)));
      }
  }