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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,
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   * See the License for the specific language governing permissions and
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  package org.apache.cassandra.index.sai.cql;
  
  import java.nio.ByteBuffer;
  import java.util.Comparator;
  import java.util.Map;
  import java.util.TreeMap;
  import javax.annotation.Nullable;
  
  import accord.utils.Gen;
  import accord.utils.Property;
  import org.agrona.collections.IntArrayList;
  import org.apache.cassandra.config.CassandraRelevantProperties;
  import org.apache.cassandra.cql3.UntypedResultSet;
  import org.apache.cassandra.db.marshal.AbstractType;
  import org.apache.cassandra.index.sai.SAITester;
  import org.assertj.core.api.Assertions;
  
  import static accord.utils.Property.qt;
  
  public abstract class AbstractSimpleEqTestBase extends SAITester
  {
      static
      {
          // The info table gets updated and force-flushed every time we truncate, so disable that and avoid the overhead:
          CassandraRelevantProperties.UNSAFE_SYSTEM.setBoolean(true);
  
          // Ignore SAI timeouts as this is just validating the read/write logic of the index:
          CassandraRelevantProperties.SAI_TEST_DISABLE_TIMEOUT.setBoolean(true);
      }
  
      protected void test(AbstractType<?> type, @Nullable Long seed, int examples, Gen<Gen<ByteBuffer>> distribution)
      {
          createTable("CREATE TABLE %s (pk int PRIMARY KEY, value " + type.asCQL3Type() + ')');
          disableCompaction(KEYSPACE);
          createIndex(String.format(CREATE_INDEX_TEMPLATE, "value"));
  
          Property.ForBuilder builder = qt().withExamples(examples);
          if (seed != null)
              builder = builder.withSeed(seed);
  
          builder.check(rs -> {
              execute("TRUNCATE %s");
  
              Gen<ByteBuffer> support = distribution.next(rs);
              Map<ByteBuffer, IntArrayList> termIndex = new TreeMap<>();
  
              for (int i = 0; i < 1000; i++)
              {
                  ByteBuffer term = support.next(rs);
                  execute("INSERT INTO %s (pk, value) VALUES (?, ?)", i, term);
                  termIndex.computeIfAbsent(term, ignore -> new IntArrayList()).addInt(i);
              }
              
              flush();
  
              for (var e : termIndex.entrySet())
              {
                  ByteBuffer term = e.getKey();
                  IntArrayList expected = e.getValue();
                  UntypedResultSet result = execute("SELECT pk, value FROM %s WHERE value=?", term);
                  IntArrayList actual = new IntArrayList(expected.size(), -1);
                  for (var row : result)
                  {
                      ByteBuffer readValue = row.getBytes("value");
                      Assertions.assertThat(readValue).describedAs("%s != %s", type.compose(term), type.compose(readValue)).isEqualTo(term);
                      actual.add(row.getInt("pk"));
                  }
                  expected.sort(Comparator.naturalOrder());
                  actual.sort(Comparator.naturalOrder());
                  Assertions.assertThat(actual).describedAs("Unexpected partitions for term %s", type.compose(term)).isEqualTo(expected);
              }
          });
      }
  }