content: /*
   * Copyright (C) 2019 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.android.quickstep;
  
  import static junit.framework.TestCase.assertNull;
  
  import static org.junit.Assert.assertEquals;
  import static org.mockito.Matchers.anyInt;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  import android.app.ActivityManager;
  
  import androidx.test.filters.SmallTest;
  
  import com.android.launcher3.util.LooperExecutor;
  import com.android.systemui.shared.recents.model.Task;
  import com.android.systemui.shared.system.ActivityManagerWrapper;
  import com.android.systemui.shared.system.KeyguardManagerCompat;
  
  import org.junit.Before;
  import org.junit.Test;
  
  import java.util.Collections;
  import java.util.List;
  
  @SmallTest
  public class RecentTasksListTest {
  
      private ActivityManagerWrapper mockActivityManagerWrapper;
  
      // Class under test
      private RecentTasksList mRecentTasksList;
  
      @Before
      public void setup() {
          LooperExecutor mockMainThreadExecutor = mock(LooperExecutor.class);
          KeyguardManagerCompat mockKeyguardManagerCompat = mock(KeyguardManagerCompat.class);
          mockActivityManagerWrapper = mock(ActivityManagerWrapper.class);
          mRecentTasksList = new RecentTasksList(mockMainThreadExecutor, mockKeyguardManagerCompat,
                  mockActivityManagerWrapper);
      }
  
      @Test
      public void onTaskRemoved_reloadsAllTasks() {
          mRecentTasksList.onTaskRemoved(0);
          verify(mockActivityManagerWrapper, times(1))
                  .getRecentTasks(anyInt(), anyInt());
      }
  
      @Test
      public void onTaskStackChanged_doesNotFetchTasks() {
          mRecentTasksList.onTaskStackChanged();
          verify(mockActivityManagerWrapper, times(0))
                  .getRecentTasks(anyInt(), anyInt());
      }
  
      @Test
      public void loadTasksInBackground_onlyKeys_noValidTaskDescription() {
          ActivityManager.RecentTaskInfo recentTaskInfo = new ActivityManager.RecentTaskInfo();
          when(mockActivityManagerWrapper.getRecentTasks(anyInt(), anyInt()))
                  .thenReturn(Collections.singletonList(recentTaskInfo));
  
          List<Task> taskList = mRecentTasksList.loadTasksInBackground(Integer.MAX_VALUE, true);
  
          assertEquals(1, taskList.size());
          assertNull(taskList.get(0).taskDescription.getLabel());
      }
  
      @Test
      public void loadTasksInBackground_moreThanKeys_hasValidTaskDescription() {
          String taskDescription = "Wheeee!";
          ActivityManager.RecentTaskInfo recentTaskInfo = new ActivityManager.RecentTaskInfo();
          recentTaskInfo.taskDescription = new ActivityManager.TaskDescription(taskDescription);
          when(mockActivityManagerWrapper.getRecentTasks(anyInt(), anyInt()))
                  .thenReturn(Collections.singletonList(recentTaskInfo));
  
          List<Task> taskList = mRecentTasksList.loadTasksInBackground(Integer.MAX_VALUE, false);
  
          assertEquals(1, taskList.size());
          assertEquals(taskDescription, taskList.get(0).taskDescription.getLabel());
      }
  }
  