import org.apache.cassandra.io.sstable.BloomFilterTracker; //导入依赖的package包/类
@Test
public void testAddingFalsePositives()
{
    BloomFilterTracker bft = new BloomFilterTracker();
    assertEquals(0L, bft.getFalsePositiveCount());
    assertEquals(0L, bft.getRecentFalsePositiveCount());
    bft.addFalsePositive();
    bft.addFalsePositive();
    assertEquals(2L, bft.getFalsePositiveCount());
    assertEquals(2L, bft.getRecentFalsePositiveCount());
    assertEquals(0L, bft.getRecentFalsePositiveCount());
    assertEquals(2L, bft.getFalsePositiveCount()); // sanity check
}
 

import org.apache.cassandra.io.sstable.BloomFilterTracker; //导入依赖的package包/类
@Test
public void testAddingTruePositives()
{
    BloomFilterTracker bft = new BloomFilterTracker();
    assertEquals(0L, bft.getTruePositiveCount());
    assertEquals(0L, bft.getRecentTruePositiveCount());
    bft.addTruePositive();
    bft.addTruePositive();
    assertEquals(2L, bft.getTruePositiveCount());
    assertEquals(2L, bft.getRecentTruePositiveCount());
    assertEquals(0L, bft.getRecentTruePositiveCount());
    assertEquals(2L, bft.getTruePositiveCount()); // sanity check
}
 

import org.apache.cassandra.io.sstable.BloomFilterTracker; //导入依赖的package包/类
@Test
public void testAddingToOneLeavesTheOtherAlone()
{
    BloomFilterTracker bft = new BloomFilterTracker();
    bft.addFalsePositive();
    assertEquals(0L, bft.getTruePositiveCount());
    assertEquals(0L, bft.getRecentTruePositiveCount());
    bft.addTruePositive();
    assertEquals(1L, bft.getFalsePositiveCount());
    assertEquals(1L, bft.getRecentFalsePositiveCount());
}