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   * "License"); you may not use this file except in compliance
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   *
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  package org.apache.cassandra.io.sstable.format.bti;
  
  import java.util.Map;
  import java.util.Set;
  import java.util.concurrent.ConcurrentHashMap;
  
  import org.junit.Assume;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  import org.apache.cassandra.cql3.CQLTester;
  import org.apache.cassandra.db.ColumnFamilyStore;
  import org.apache.cassandra.io.sstable.Descriptor;
  import org.apache.cassandra.io.sstable.format.SSTableReader;
  import org.apache.cassandra.io.util.File;
  import org.jboss.byteman.contrib.bmunit.BMRule;
  import org.jboss.byteman.contrib.bmunit.BMUnitRunner;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertTrue;
  
  @RunWith(BMUnitRunner.class)
  public class LoadingBuilderTest extends CQLTester
  {
      public static Map<String, Boolean> preloadsMap = new ConcurrentHashMap<>();
  
      @Test
      @BMRule(name = "Save preload argument of PartitionIndex initialization",
              targetClass = "org.apache.cassandra.io.sstable.format.bti.PartitionIndex",
              targetMethod = "load(org.apache.cassandra.io.util.FileHandle, org.apache.cassandra.dht.IPartitioner, boolean)",
              action = "org.apache.cassandra.io.sstable.format.bti.LoadingBuilderTest.preloadsMap.put($1.path(), $3)")
      public void testPreloadFlag()
      {
          Assume.assumeTrue(BtiFormat.isSelected());
          testPreloadFlag(false);
          testPreloadFlag(true);
      }
  
      private void testPreloadFlag(boolean disableBloomFilter)
      {
          createTable("CREATE TABLE %s (k int PRIMARY KEY, v int) WITH bloom_filter_fp_chance = " +
                      (disableBloomFilter ? "1" : "0.01"));
          for (int i = 0; i < 100; ++i)
              execute("INSERT INTO %s (k, v) VALUES (?, ?)", i, i);
          flush();
  
          ColumnFamilyStore cfs = getCurrentColumnFamilyStore();
          Set<SSTableReader> ssTables = cfs.getLiveSSTables();
          assertTrue(!ssTables.isEmpty());
  
          for (SSTableReader rdr : ssTables)
          {
              Descriptor descriptor = rdr.descriptor;
              File partitionIndexFile = descriptor.fileFor(BtiFormat.Components.PARTITION_INDEX);
              // When we flush we should never preload the index file
              verifyPreloadMatches(false, partitionIndexFile);
  
              // But when we reopen the file from disk, we should do it if there is no bloom filter
              SSTableReader newReader = SSTableReader.open(cfs, descriptor);
              try
              {
                  verifyPreloadMatches(disableBloomFilter, partitionIndexFile);
              }
              finally
              {
                  newReader.selfRef().release();
              }
          }
      }
  
      private static void verifyPreloadMatches(boolean disableBloomFilter, File partitionIndexFile)
      {
          Boolean preload = preloadsMap.get(partitionIndexFile.path());
          assertNotNull(partitionIndexFile.toString(), preload);
          assertEquals(disableBloomFilter, preload.booleanValue());
      }
  }
  