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   * Licensed to the Apache Software Foundation (ASF) under one
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   * 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.
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  package org.apache.cassandra.repair.asymmetric;
  
  import java.util.Set;
  
  import com.google.common.collect.Sets;
  import org.junit.Test;
  
  import org.apache.cassandra.dht.Range;
  import org.apache.cassandra.dht.Token;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  import static org.apache.cassandra.repair.asymmetric.ReduceHelperTest.range;
  
  public class RangeDenormalizerTest
  {
      @Test
      public void testDenormalize()
      {
          // test when the new incoming range is fully contained within an existing incoming range
          StreamFromOptions dummy = new StreamFromOptions(null, range(0, 100));
          RangeMap<StreamFromOptions> incoming = new RangeMap<>();
          incoming.put(range(0, 100), dummy);
          Set<Range<Token>> newInput = RangeDenormalizer.denormalize(range(30, 40), incoming);
          assertEquals(3, incoming.size());
          assertTrue(incoming.containsKey(range(0, 30)));
          assertTrue(incoming.containsKey(range(30, 40)));
          assertTrue(incoming.containsKey(range(40, 100)));
          assertEquals(1, newInput.size());
          assertTrue(newInput.contains(range(30, 40)));
      }
  
      @Test
      public void testDenormalize2()
      {
          // test when the new incoming range fully contains an existing incoming range
          StreamFromOptions dummy = new StreamFromOptions(null, range(40, 50));
          RangeMap<StreamFromOptions> incoming = new RangeMap<>();
          incoming.put(range(40, 50), dummy);
          Set<Range<Token>> newInput = RangeDenormalizer.denormalize(range(0, 100), incoming);
          assertEquals(1, incoming.size());
          assertTrue(incoming.containsKey(range(40, 50)));
          assertEquals(3, newInput.size());
          assertTrue(newInput.contains(range(0, 40)));
          assertTrue(newInput.contains(range(40, 50)));
          assertTrue(newInput.contains(range(50, 100)));
      }
  
      @Test
      public void testDenormalize3()
      {
          // test when there are multiple existing incoming ranges and the new incoming overlaps some and contains some
          StreamFromOptions dummy = new StreamFromOptions(null, range(0, 100));
          StreamFromOptions dummy2 = new StreamFromOptions(null, range(200, 300));
          StreamFromOptions dummy3 = new StreamFromOptions(null, range(500, 600));
          RangeMap<StreamFromOptions> incoming = new RangeMap<>();
          incoming.put(range(0, 100), dummy);
          incoming.put(range(200, 300), dummy2);
          incoming.put(range(500, 600), dummy3);
          Set<Range<Token>> expectedNewInput = Sets.newHashSet(range(50, 100), range(100, 200), range(200, 300), range(300, 350));
          Set<Range<Token>> expectedIncomingKeys = Sets.newHashSet(range(0, 50), range(50, 100), range(200, 300), range(500, 600));
          Set<Range<Token>> newInput = RangeDenormalizer.denormalize(range(50, 350), incoming);
          assertEquals(expectedNewInput, newInput);
          assertEquals(expectedIncomingKeys, incoming.keySet());
      }
  }
  