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;
  
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  public class WindowTest {
  
      static class TestWindow extends Window {
          TestWindow(final long startMs, final long endMs) {
              super(startMs, endMs);
          }
  
          @Override
          public boolean overlap(final Window other) {
              return false;
          }
      }
  
      static class TestWindow2 extends  Window {
          TestWindow2(final long startMs, final long endMs) {
              super(startMs, endMs);
          }
  
          @Override
          public boolean overlap(final Window other) {
              return false;
          }
      }
  
      private final TestWindow window = new TestWindow(5, 10);
  
      @Test
      public void shouldThrowIfStartIsNegative() {
          assertThrows(IllegalArgumentException.class, () -> new TestWindow(-1, 0));
      }
  
      @Test
      public void shouldThrowIfEndIsSmallerThanStart() {
          assertThrows(IllegalArgumentException.class, () -> new TestWindow(1, 0));
      }
  
      @Test
      public void shouldBeEqualIfStartAndEndSame() {
          final TestWindow window2 = new TestWindow(window.startMs, window.endMs);
  
          assertEquals(window, window);
          assertEquals(window, window2);
          assertEquals(window2, window);
      }
  
      @Test
      public void shouldNotBeEqualIfNull() {
          assertNotEquals(window, null);
      }
  
      @Test
      public void shouldNotBeEqualIfStartOrEndIsDifferent() {
          assertNotEquals(window, new TestWindow(0, window.endMs));
          assertNotEquals(window, new TestWindow(7, window.endMs));
          assertNotEquals(window, new TestWindow(window.startMs, 7));
          assertNotEquals(window, new TestWindow(window.startMs, 15));
          assertNotEquals(window, new TestWindow(7, 8));
          assertNotEquals(window, new TestWindow(0, 15));
      }
  
      @Test
      public void shouldNotBeEqualIfDifferentWindowType() {
          assertNotEquals(window, new TestWindow2(window.startMs, window.endMs));
      }
  }
  