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   * 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.cassandra.db.marshal;
  
  import java.nio.ByteBuffer;
  
  import org.junit.Test;
  import org.apache.cassandra.serializers.SimpleDateSerializer;
  
  public class SimpleDateTypeTest
  {
      @Test public void TestComparison()
      {
          ByteBuffer d1 = SimpleDateType.instance.fromString("1970-01-05");
          ByteBuffer d2 = SimpleDateSerializer.instance.serialize(makeUnsigned(4));
          assert SimpleDateType.instance.compare(d1, d2) == 0 : "Failed == comparison";
              String.format("Failed == comparison with %s and %s",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateType.instance.fromString("1970-01-05");
          d2 = SimpleDateSerializer.instance.serialize(makeUnsigned(10));
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
              String.format("Failed comparison of %s and %s, expected <",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateType.instance.fromString("1970-01-05"); // 4
          d2 = SimpleDateSerializer.instance.serialize(makeUnsigned(-10));
          assert SimpleDateType.instance.compare(d1, d2) > 0 :
              String.format("Failed comparison of %s and %s, expected > 0",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateType.instance.fromString("1");
          d2 = SimpleDateType.instance.fromString("1000");
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
                  String.format("Failed < comparison with string inputs %s and %s",
                          SimpleDateSerializer.instance.deserialize(d1),
                          SimpleDateSerializer.instance.deserialize(d2));
  
          Integer intLimit = Integer.MAX_VALUE;
          d1 = SimpleDateType.instance.fromString("0");
          d2 = SimpleDateType.instance.fromString(intLimit.toString());
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
                  String.format("Failed < comparison with string inputs at integer bounds %s and %s",
                          SimpleDateSerializer.instance.deserialize(d1),
                          SimpleDateSerializer.instance.deserialize(d2));
  
          Long overLimit = (long)(Integer.MAX_VALUE);
          d1 = SimpleDateType.instance.fromString("0");
          d2 = SimpleDateType.instance.fromString(overLimit.toString());
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
                  String.format("Failed < comparison with string inputs at integer bounds %s and %s",
                          SimpleDateSerializer.instance.deserialize(d1),
                          SimpleDateSerializer.instance.deserialize(d2));
  
          Long i1 = 0L;
          Long i2 = (long)Math.pow(2,32) - 1;
          d1 = SimpleDateType.instance.fromString(i1.toString());
          d2 = SimpleDateType.instance.fromString(i2.toString());
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
              String.format("Failed limits comparison with %s and %s",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateType.instance.fromString("256");
          d2 = SimpleDateType.instance.fromString("512");
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
              String.format("Failed comparison with %s and %s",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateSerializer.instance.serialize(makeUnsigned(0));
          d2 = SimpleDateSerializer.instance.serialize(makeUnsigned(Integer.MAX_VALUE));
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
              String.format("Failed neg/pos comparison with %s and %s",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateType.instance.fromString("-2200-10-10");
          d2 = SimpleDateType.instance.fromString("2200-10-10");
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
              String.format("Failed neg/pos string comparison with %s and %s",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateType.instance.fromString("1969-12-31");
          d2 = SimpleDateType.instance.fromString("1970-01-01");
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
              String.format("Failed pre/post epoch comparison with %s and %s",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateType.instance.fromString("1970-01-01");
          d2 = SimpleDateType.instance.fromString("1970-01-01");
          assert SimpleDateType.instance.compare(d1, d2) == 0 :
              String.format("Failed == date from string comparison with %s and %s",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          d1 = SimpleDateType.instance.fromString("1970-01-01");
          d2 = SimpleDateType.instance.fromString("1970-01-02");
          assert SimpleDateType.instance.compare(d1, d2) < 0 :
              String.format("Failed post epoch string comparison with %s and %s",
                  SimpleDateSerializer.instance.deserialize(d1),
                  SimpleDateSerializer.instance.deserialize(d2));
  
          for (int i = 0; i < 32; ++i)
          {
              int offset = (int)Math.pow(2,i);
              d1 = SimpleDateSerializer.instance.serialize(makeUnsigned(0 - offset));
              d2 = SimpleDateSerializer.instance.serialize(makeUnsigned(offset));
              assert SimpleDateType.instance.compare(d1, d2) < 0 :
                  String.format("Failed < comparison of %s and %s",
                      SimpleDateSerializer.instance.deserialize(d1),
                      SimpleDateSerializer.instance.deserialize(d2));
          }
  
          for (int i = 0; i < 32; ++i)
          {
              int offset = (int)Math.pow(2,i);
              d1 = SimpleDateSerializer.instance.serialize(makeUnsigned(offset));
              d2 = SimpleDateSerializer.instance.serialize(makeUnsigned(0 - offset));
              assert SimpleDateType.instance.compare(d1, d2) > 0 :
                  String.format("Failed > comparison of %s and %s",
                      SimpleDateSerializer.instance.deserialize(d1),
                      SimpleDateSerializer.instance.deserialize(d2));
          }
      }
  
      private Integer makeUnsigned(int input)
      {
          return input - Integer.MIN_VALUE;
      }
  }
  