content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.kafka.clients.consumer.internals;
  
  import org.apache.kafka.clients.consumer.OffsetAndMetadata;
  import org.apache.kafka.clients.consumer.OffsetCommitCallback;
  import org.apache.kafka.common.TopicPartition;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.InOrder;
  import org.mockito.Mock;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.mockito.junit.jupiter.MockitoSettings;
  import org.mockito.quality.Strictness;
  
  import java.util.Collections;
  import java.util.Map;
  
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.inOrder;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  @MockitoSettings(strictness = Strictness.STRICT_STUBS)
  public class OffsetCommitCallbackInvokerTest {
  
      @Mock
      private ConsumerInterceptors<?, ?> consumerInterceptors;
      private OffsetCommitCallbackInvoker offsetCommitCallbackInvoker;
  
      @BeforeEach
      public void setup() {
          offsetCommitCallbackInvoker = new OffsetCommitCallbackInvoker(consumerInterceptors);
      }
  
      @Test
      public void testMultipleUserCallbacksInvoked() {
          final TopicPartition t0 = new TopicPartition("t0", 2);
          Map<TopicPartition, OffsetAndMetadata> offsets1 =
              Collections.singletonMap(t0, new OffsetAndMetadata(10L));
          Map<TopicPartition, OffsetAndMetadata> offsets2 =
              Collections.singletonMap(t0, new OffsetAndMetadata(20L));
          OffsetCommitCallback callback1 = mock(OffsetCommitCallback.class);
          OffsetCommitCallback callback2 = mock(OffsetCommitCallback.class);
  
          offsetCommitCallbackInvoker.enqueueUserCallbackInvocation(callback1, offsets1, null);
          offsetCommitCallbackInvoker.enqueueUserCallbackInvocation(callback2, offsets2, null);
          verify(callback1, never()).onComplete(any(), any());
          verify(callback2, never()).onComplete(any(), any());
  
          offsetCommitCallbackInvoker.executeCallbacks();
          InOrder inOrder = inOrder(callback1, callback2);
          inOrder.verify(callback1).onComplete(offsets1, null);
          inOrder.verify(callback2).onComplete(offsets2, null);
  
          offsetCommitCallbackInvoker.executeCallbacks();
          inOrder.verifyNoMoreInteractions();
      }
  
      @Test
      public void testNoOnCommitOnEmptyInterceptors() {
          final TopicPartition t0 = new TopicPartition("t0", 2);
          Map<TopicPartition, OffsetAndMetadata> offsets1 =
              Collections.singletonMap(t0, new OffsetAndMetadata(10L));
          Map<TopicPartition, OffsetAndMetadata> offsets2 =
              Collections.singletonMap(t0, new OffsetAndMetadata(20L));
          when(consumerInterceptors.isEmpty()).thenReturn(true);
  
          offsetCommitCallbackInvoker.enqueueInterceptorInvocation(offsets1);
          offsetCommitCallbackInvoker.enqueueInterceptorInvocation(offsets2);
          offsetCommitCallbackInvoker.executeCallbacks();
          verify(consumerInterceptors, never()).onCommit(any());
      }
  
      @Test
      public void testOnlyInterceptors() {
          final TopicPartition t0 = new TopicPartition("t0", 2);
          Map<TopicPartition, OffsetAndMetadata> offsets1 =
              Collections.singletonMap(t0, new OffsetAndMetadata(10L));
          Map<TopicPartition, OffsetAndMetadata> offsets2 =
              Collections.singletonMap(t0, new OffsetAndMetadata(20L));
          when(consumerInterceptors.isEmpty()).thenReturn(false);
  
          offsetCommitCallbackInvoker.enqueueInterceptorInvocation(offsets1);
          offsetCommitCallbackInvoker.enqueueInterceptorInvocation(offsets2);
          verify(consumerInterceptors, never()).onCommit(any());
  
          offsetCommitCallbackInvoker.executeCallbacks();
          InOrder inOrder = inOrder(consumerInterceptors);
          inOrder.verify(consumerInterceptors).onCommit(offsets1);
          inOrder.verify(consumerInterceptors).onCommit(offsets2);
  
          offsetCommitCallbackInvoker.executeCallbacks();
          inOrder.verifyNoMoreInteractions();
      }
  
      @Test
      public void testMixedCallbacksInterceptorsInvoked() {
          final TopicPartition t0 = new TopicPartition("t0", 2);
          Map<TopicPartition, OffsetAndMetadata> offsets1 =
              Collections.singletonMap(t0, new OffsetAndMetadata(10L));
          Map<TopicPartition, OffsetAndMetadata> offsets2 =
              Collections.singletonMap(t0, new OffsetAndMetadata(20L));
          OffsetCommitCallback callback1 = mock(OffsetCommitCallback.class);
          when(consumerInterceptors.isEmpty()).thenReturn(false);
  
          offsetCommitCallbackInvoker.enqueueInterceptorInvocation(offsets1);
          offsetCommitCallbackInvoker.enqueueInterceptorInvocation(offsets2);
          offsetCommitCallbackInvoker.enqueueUserCallbackInvocation(callback1, offsets1, null);
          verify(callback1, never()).onComplete(any(), any());
          verify(consumerInterceptors, never()).onCommit(any());
  
          offsetCommitCallbackInvoker.executeCallbacks();
          InOrder inOrder = inOrder(callback1, consumerInterceptors);
          inOrder.verify(consumerInterceptors).onCommit(offsets1);
          inOrder.verify(consumerInterceptors).onCommit(offsets2);
          inOrder.verify(callback1).onComplete(offsets1, null);
  
          offsetCommitCallbackInvoker.executeCallbacks();
          inOrder.verifyNoMoreInteractions();
      }
  
  
  }
  