@Test
public void invokingZAddCreatesNewSpan() {

  commandCreatesNewSpan(RedisCommand.ZADD,
      () -> getConnection().zAdd("key".getBytes(), 0D, "val".getBytes()));
  verify(mockRedisConnection()).zAdd("key".getBytes(), 0D, "val".getBytes());
  commandCreatesNewSpan(RedisCommand.ZADD, () -> getConnection().zAdd("key".getBytes(), null));
  verify(mockRedisConnection()).zAdd("key".getBytes(), null);
}