content: /*
   * Copyright 1999-2023 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.common.notify;
  
  import com.alibaba.nacos.common.notify.listener.SmartSubscriber;
  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.junit.jupiter.MockitoExtension;
  
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicLong;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.reset;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  class DefaultSharePublisherTest {
      
      private static final AtomicLong TEST_SEQUENCE = new AtomicLong();
      
      DefaultSharePublisher defaultSharePublisher;
      
      @Mock
      SmartSubscriber smartSubscriber1;
      
      @Mock
      SmartSubscriber smartSubscriber2;
      
      @BeforeEach
      void setUp() throws Exception {
          defaultSharePublisher = new DefaultSharePublisher();
          defaultSharePublisher.init(SlowEvent.class, 2);
      }
      
      @AfterEach
      void tearDown() throws Exception {
          defaultSharePublisher.shutdown();
      }
      
      @Test
      void testRemoveSubscribers() {
          defaultSharePublisher.addSubscriber(smartSubscriber1, MockSlowEvent1.class);
          defaultSharePublisher.addSubscriber(smartSubscriber1, MockSlowEvent2.class);
          defaultSharePublisher.addSubscriber(smartSubscriber2, MockSlowEvent2.class);
          assertEquals(2, defaultSharePublisher.getSubscribers().size());
          defaultSharePublisher.removeSubscriber(smartSubscriber1, MockSlowEvent1.class);
          defaultSharePublisher.removeSubscriber(smartSubscriber1, MockSlowEvent2.class);
          defaultSharePublisher.removeSubscriber(smartSubscriber2, MockSlowEvent2.class);
          assertEquals(0, defaultSharePublisher.getSubscribers().size());
      }
      
      @Test
      void testReceiveEventWithoutSubscriber() {
          defaultSharePublisher.addSubscriber(smartSubscriber1, MockSlowEvent1.class);
          defaultSharePublisher.addSubscriber(smartSubscriber2, MockSlowEvent2.class);
          defaultSharePublisher.receiveEvent(new SlowEvent() {
              private static final long serialVersionUID = 5996336354563933789L;
              
              @Override
              public long sequence() {
                  return super.sequence();
              }
          });
          verify(smartSubscriber1, never()).onEvent(any(SlowEvent.class));
          verify(smartSubscriber2, never()).onEvent(any(SlowEvent.class));
      }
      
      @Test
      void testReceiveEventWithSubscriber() {
          defaultSharePublisher.addSubscriber(smartSubscriber1, MockSlowEvent1.class);
          defaultSharePublisher.addSubscriber(smartSubscriber2, MockSlowEvent2.class);
          defaultSharePublisher.receiveEvent(new MockSlowEvent1());
          verify(smartSubscriber1).onEvent(any(MockSlowEvent1.class));
          verify(smartSubscriber2, never()).onEvent(any(MockSlowEvent1.class));
          defaultSharePublisher.receiveEvent(new MockSlowEvent2());
          verify(smartSubscriber1, never()).onEvent(any(MockSlowEvent2.class));
          verify(smartSubscriber2).onEvent(any(MockSlowEvent2.class));
      }
      
      @Test
      void testIgnoreExpiredEvent() throws InterruptedException {
          MockSlowEvent1 mockSlowEvent1 = new MockSlowEvent1();
          MockSlowEvent2 mockSlowEvent2 = new MockSlowEvent2();
          defaultSharePublisher.addSubscriber(smartSubscriber1, MockSlowEvent1.class);
          defaultSharePublisher.addSubscriber(smartSubscriber2, MockSlowEvent2.class);
          defaultSharePublisher.publish(mockSlowEvent1);
          defaultSharePublisher.publish(mockSlowEvent2);
          TimeUnit.MILLISECONDS.sleep(1500);
          verify(smartSubscriber1).onEvent(mockSlowEvent1);
          verify(smartSubscriber2).onEvent(mockSlowEvent2);
          reset(smartSubscriber1);
          when(smartSubscriber1.ignoreExpireEvent()).thenReturn(true);
          defaultSharePublisher.publish(mockSlowEvent1);
          TimeUnit.MILLISECONDS.sleep(100);
          verify(smartSubscriber1, never()).onEvent(mockSlowEvent1);
      }
      
      private static class MockSlowEvent1 extends SlowEvent {
          
          private static final long serialVersionUID = -951177705152304999L;
          
          private final long sequence = TEST_SEQUENCE.incrementAndGet();
          
          @Override
          public long sequence() {
              return sequence;
          }
      }
      
      private static class MockSlowEvent2 extends SlowEvent {
          
          private static final long serialVersionUID = -951177705152304999L;
          
          private final long sequence = TEST_SEQUENCE.incrementAndGet();
          
          @Override
          public long sequence() {
              return sequence;
          }
      }
  }