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.streams.kstream.internals;
  
  import org.apache.kafka.streams.processor.api.Record;
  import org.apache.kafka.streams.processor.internals.InternalProcessorContext;
  import org.apache.kafka.streams.state.ValueAndTimestamp;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.mockito.junit.jupiter.MockitoSettings;
  import org.mockito.quality.Strictness;
  
  import static org.mockito.Mockito.doNothing;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  
  @ExtendWith(MockitoExtension.class)
  @MockitoSettings(strictness = Strictness.STRICT_STUBS)
  public class TimestampedCacheFlushListenerTest {
  
      @Test
      public void shouldForwardValueTimestampIfNewValueExists() {
          @SuppressWarnings("unchecked")
          final InternalProcessorContext<String, Change<String>> context = mock(InternalProcessorContext.class);
          doNothing().when(context).forward(
              new Record<>(
                  "key",
                  new Change<>("newValue", "oldValue"),
                  42L));
  
          new TimestampedCacheFlushListener<>(context).apply(
              new Record<>(
                  "key",
                  new Change<>(
                      ValueAndTimestamp.make("newValue", 42L),
                      ValueAndTimestamp.make("oldValue", 21L)),
                  73L));
  
          verify(context, times(2)).setCurrentNode(null);
      }
  
      @Test
      public void shouldForwardParameterTimestampIfNewValueIsNull() {
          @SuppressWarnings("unchecked")
          final InternalProcessorContext<String, Change<String>> context = mock(InternalProcessorContext.class);
          doNothing().when(context).forward(
              new Record<>(
                  "key",
                  new Change<>(null, "oldValue"),
                  73L));
  
          new TimestampedCacheFlushListener<>(context).apply(
              new Record<>(
                  "key",
                  new Change<>(null, ValueAndTimestamp.make("oldValue", 21L)),
                  73L));
  
          verify(context, times(2)).setCurrentNode(null);
      }
  }
  