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.timeline;
  
  import org.apache.kafka.common.utils.LogContext;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.Timeout;
  
  import java.util.List;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  
  @Timeout(value = 40)
  public class TimelineLongTest {
      @Test
      public void testModifyValue() {
          SnapshotRegistry registry = new SnapshotRegistry(new LogContext());
          TimelineLong value = new TimelineLong(registry);
          assertEquals(0L, value.get());
          assertEquals(0L, value.get(Long.MAX_VALUE));
          value.set(1L);
          value.set(Long.MAX_VALUE);
          assertEquals(Long.MAX_VALUE, value.get());
          assertEquals(Long.MAX_VALUE, value.get(Long.MAX_VALUE));
      }
  
      @Test
      public void testToStringAndEquals() {
          SnapshotRegistry registry = new SnapshotRegistry(new LogContext());
          TimelineLong value = new TimelineLong(registry);
          assertEquals("0", value.toString());
          value.set(1L);
          TimelineLong integer2 = new TimelineLong(registry);
          integer2.set(1);
          assertEquals("1", integer2.toString());
          assertEquals(value, integer2);
      }
  
      @Test
      public void testSnapshot() {
          SnapshotRegistry registry = new SnapshotRegistry(new LogContext());
          TimelineLong value = new TimelineLong(registry);
          registry.getOrCreateSnapshot(2);
          value.set(1L);
          registry.getOrCreateSnapshot(3);
          value.set(2L);
          value.increment();
          value.increment();
          value.decrement();
          registry.getOrCreateSnapshot(4);
          assertEquals(0L, value.get(2));
          assertEquals(1L, value.get(3));
          assertEquals(3L, value.get(4));
          registry.revertToSnapshot(3);
          assertEquals(1L, value.get());
          registry.revertToSnapshot(2);
          assertEquals(0L, value.get());
      }
  
      @Test
      public void testReset() {
          SnapshotRegistry registry = new SnapshotRegistry(new LogContext());
          TimelineLong value = new TimelineLong(registry);
          registry.getOrCreateSnapshot(2);
          value.set(1L);
          registry.getOrCreateSnapshot(3);
          value.set(2L);
  
          registry.reset();
  
          assertEquals(List.of(), registry.epochsList());
          assertEquals(TimelineLong.INIT, value.get());
      }
  }
  