content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.alibaba.nacos.config.server.manager;
  
  import com.alibaba.nacos.common.task.AbstractDelayTask;
  import com.alibaba.nacos.common.task.NacosTaskProcessor;
  import com.alibaba.nacos.config.server.constant.Constants;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.Mock;
  import org.mockito.internal.verification.Times;
  import org.mockito.junit.jupiter.MockitoExtension;
  
  import javax.management.ObjectName;
  import java.lang.management.ManagementFactory;
  import java.util.Date;
  import java.util.concurrent.TimeUnit;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  class TaskManagerTest {
      
      private TaskManager taskManager;
      
      @Mock
      private NacosTaskProcessor taskProcessor;
      
      @Mock
      private NacosTaskProcessor testTaskProcessor;
      
      private AbstractDelayTask abstractTask;
      
      @BeforeEach
      void setUp() {
          taskManager = new TaskManager(TaskManagerTest.class.getName());
          taskManager.setDefaultTaskProcessor(taskProcessor);
          abstractTask = new AbstractDelayTask() {
              @Override
              public void merge(AbstractDelayTask task) {
              }
          };
      }
      
      @AfterEach
      void tearDown() {
          taskManager.close();
      }
      
      @Test
      void testSize() {
          assertEquals(0, taskManager.size());
          taskManager.addTask("test", abstractTask);
          assertEquals(1, taskManager.size());
          taskManager.removeTask("test");
          assertEquals(0, taskManager.size());
      }
      
      @Test
      void testIsEmpty() {
          assertTrue(taskManager.isEmpty());
          taskManager.addTask("test", abstractTask);
          assertFalse(taskManager.isEmpty());
          taskManager.removeTask("test");
          assertTrue(taskManager.isEmpty());
      }
      
      @Test
      void testAddProcessor() throws InterruptedException {
          when(testTaskProcessor.process(abstractTask)).thenReturn(true);
          taskManager.addProcessor("test", testTaskProcessor);
          taskManager.addTask("test", abstractTask);
          TimeUnit.MILLISECONDS.sleep(200);
          verify(testTaskProcessor).process(abstractTask);
          verify(taskProcessor, never()).process(abstractTask);
      }
      
      @Test
      void testRemoveProcessor() throws InterruptedException {
          when(taskProcessor.process(abstractTask)).thenReturn(true);
          taskManager.addProcessor("test", testTaskProcessor);
          taskManager.removeProcessor("test");
          taskManager.addTask("test", abstractTask);
          TimeUnit.MILLISECONDS.sleep(200);
          verify(testTaskProcessor, never()).process(abstractTask);
          verify(taskProcessor).process(abstractTask);
      }
      
      @Test
      void testRetryTaskAfterFail() throws InterruptedException {
          when(taskProcessor.process(abstractTask)).thenReturn(false, true);
          taskManager.addTask("test", abstractTask);
          TimeUnit.MILLISECONDS.sleep(300);
          verify(taskProcessor, new Times(2)).process(abstractTask);
      }
      
      @Test
      void testGetTaskInfos() throws InterruptedException {
          taskManager.addProcessor("test", testTaskProcessor);
          when(testTaskProcessor.process(abstractTask)).thenReturn(true);
          taskManager.addTask("test", abstractTask);
          assertEquals("test:" + new Date(0) + Constants.NACOS_LINE_SEPARATOR, taskManager.getTaskInfos());
          TimeUnit.MILLISECONDS.sleep(150);
          assertEquals("test:finished" + Constants.NACOS_LINE_SEPARATOR, taskManager.getTaskInfos());
      }
      
      @Test
      void testInit() throws Exception {
          taskManager.init();
          ObjectName oName = new ObjectName(TaskManagerTest.class.getName() + ":type=" + TaskManager.class.getSimpleName());
          assertTrue(ManagementFactory.getPlatformMBeanServer().isRegistered(oName));
      }
  }
  