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.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class SessionWindowTest {
  
      private final long start = 50;
      private final long end = 100;
      private final SessionWindow window = new SessionWindow(start, end);
      private final TimeWindow timeWindow = new TimeWindow(start, end);
  
      @Test
      public void shouldNotOverlapIfOtherWindowIsBeforeThisWindow() {
          /*
           * This:        [-------]
           * Other: [---]
           */
          assertFalse(window.overlap(new SessionWindow(0, 25)));
          assertFalse(window.overlap(new SessionWindow(0, start - 1)));
          assertFalse(window.overlap(new SessionWindow(start - 1, start - 1)));
      }
  
      @Test
      public void shouldOverlapIfOtherWindowEndIsWithinThisWindow() {
          /*
           * This:        [-------]
           * Other: [---------]
           */
          assertTrue(window.overlap(new SessionWindow(0, start)));
          assertTrue(window.overlap(new SessionWindow(0, start + 1)));
          assertTrue(window.overlap(new SessionWindow(0, 75)));
          assertTrue(window.overlap(new SessionWindow(0, end - 1)));
          assertTrue(window.overlap(new SessionWindow(0, end)));
  
          assertTrue(window.overlap(new SessionWindow(start - 1, start)));
          assertTrue(window.overlap(new SessionWindow(start - 1, start + 1)));
          assertTrue(window.overlap(new SessionWindow(start - 1, 75)));
          assertTrue(window.overlap(new SessionWindow(start - 1, end - 1)));
          assertTrue(window.overlap(new SessionWindow(start - 1, end)));
      }
  
      @Test
      public void shouldOverlapIfOtherWindowContainsThisWindow() {
          /*
           * This:        [-------]
           * Other: [------------------]
           */
          assertTrue(window.overlap(new SessionWindow(0, end)));
          assertTrue(window.overlap(new SessionWindow(0, end + 1)));
          assertTrue(window.overlap(new SessionWindow(0, 150)));
  
          assertTrue(window.overlap(new SessionWindow(start - 1, end)));
          assertTrue(window.overlap(new SessionWindow(start - 1, end + 1)));
          assertTrue(window.overlap(new SessionWindow(start - 1, 150)));
  
          assertTrue(window.overlap(new SessionWindow(start, end)));
          assertTrue(window.overlap(new SessionWindow(start, end + 1)));
          assertTrue(window.overlap(new SessionWindow(start, 150)));
      }
  
      @Test
      public void shouldOverlapIfOtherWindowIsWithinThisWindow() {
          /*
           * This:        [-------]
           * Other:         [---]
           */
          assertTrue(window.overlap(new SessionWindow(start, start)));
          assertTrue(window.overlap(new SessionWindow(start, 75)));
          assertTrue(window.overlap(new SessionWindow(start, end)));
          assertTrue(window.overlap(new SessionWindow(75, end)));
          assertTrue(window.overlap(new SessionWindow(end, end)));
      }
  
      @Test
      public void shouldOverlapIfOtherWindowStartIsWithinThisWindow() {
          /*
           * This:        [-------]
           * Other:           [-------]
           */
          assertTrue(window.overlap(new SessionWindow(start, end + 1)));
          assertTrue(window.overlap(new SessionWindow(start, 150)));
          assertTrue(window.overlap(new SessionWindow(75, end + 1)));
          assertTrue(window.overlap(new SessionWindow(75, 150)));
          assertTrue(window.overlap(new SessionWindow(end, end + 1)));
          assertTrue(window.overlap(new SessionWindow(end, 150)));
      }
  
      @Test
      public void shouldNotOverlapIsOtherWindowIsAfterThisWindow() {
          /*
           * This:        [-------]
           * Other:                  [---]
           */
          assertFalse(window.overlap(new SessionWindow(end + 1, end + 1)));
          assertFalse(window.overlap(new SessionWindow(end + 1, 150)));
          assertFalse(window.overlap(new SessionWindow(125, 150)));
      }
  
      @Test
      public void cannotCompareSessionWindowWithDifferentWindowType() {
          assertThrows(IllegalArgumentException.class, () -> window.overlap(timeWindow));
      }
  }