code: @Test public void testConfigValuesPropogated(){
    CassandraHostConfigurator cassandraHostConfigurator=new CassandraHostConfigurator("localhost:9170,localhost:9171,localhost:9172");
    cassandraHostConfigurator.setMaxActive(20);
    cassandraHostConfigurator.setMaxIdle(5);
    cassandraHostConfigurator.setCassandraThriftSocketTimeout(3000);
    cassandraHostConfigurator.setMaxWaitTimeWhenExhausted(4000);
    cassandraHostConfigurator.setExhaustedPolicy(ExhaustedPolicy.WHEN_EXHAUSTED_GROW);
    CassandraHost[] cassandraHosts=cassandraHostConfigurator.buildCassandraHosts();
    assertEquals(20,cassandraHosts[1].getMaxActive());
    assertEquals(20,cassandraHosts[0].getMaxActive());
    assertEquals(5,cassandraHosts[1].getMaxIdle());
    assertEquals(ExhaustedPolicy.WHEN_EXHAUSTED_GROW,cassandraHosts[1].getExhaustedPolicy());
    assertEquals(4000,cassandraHosts[1].getMaxWaitTimeWhenExhausted());
    assertEquals(3000,cassandraHosts[2].getCassandraThriftSocketTimeout());
    assertEquals(3000,cassandraHosts[0].getCassandraThriftSocketTimeout());
  }
  