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.raft.internals;
  
  import org.apache.kafka.raft.Batch;
  import org.apache.kafka.raft.BatchReader;
  
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  
  import java.util.List;
  import java.util.OptionalLong;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  class MemoryBatchReaderTest {
  
      @Test
      public void testIteration() {
          Batch<String> batch1 = Batch.data(
              0L, 1, 0L, 3, List.of("a", "b", "c")
          );
          Batch<String> batch2 = Batch.data(
              3L, 2, 1L, 2, List.of("d", "e")
          );
          Batch<String> batch3 = Batch.data(
              5L, 2, 3L, 4, List.of("f", "g", "h", "i")
          );
  
          @SuppressWarnings("unchecked")
          CloseListener<BatchReader<String>> listener = Mockito.mock(CloseListener.class);
          MemoryBatchReader<String> reader = MemoryBatchReader.of(
              List.of(batch1, batch2, batch3),
              listener
          );
  
          assertEquals(0L, reader.baseOffset());
          assertEquals(OptionalLong.of(8L), reader.lastOffset());
  
          assertTrue(reader.hasNext());
          assertEquals(batch1, reader.next());
  
          assertTrue(reader.hasNext());
          assertEquals(batch2, reader.next());
  
          assertTrue(reader.hasNext());
          assertEquals(batch3, reader.next());
  
          assertFalse(reader.hasNext());
  
          reader.close();
          Mockito.verify(listener).onClose(reader);
      }
  
  }
  