embeded redis server in spring boot connection refused issue

I am trying to test redis server works in a test code.So I made a Redis test code like below

@Testvoid saveToken(){    MofMember mofM = new MofMember("123", "123", "123@123.com", "Lee", "lelele", "male", "11/10", "1999", "123-123-123");    String token = ts.generateToken(mofM);    assertNotNull(token, "this is null");    assertDoesNotThrow(() -> {            ts.saveToken(token);    });}

I but when I try to test I get a error below

Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException:Connection refused: no further information: localhost/127.0.0.1:6379

To connect embeded redis I made an Redis configuration like below

RedisConf class

@Configurationpublic class RedisConf {

private static final Logger logger = LoggerFactory.getLogger(RedisConf.class.getName());@Beanpublic LettuceConnectionFactory redisConnectionFactory() {    return new LettuceConnectionFactory();}@Beanpublic RedisTemplate<String, String> redisTemplate() {    RedisTemplate<String, String> redisTemplate = new RedisTemplate<>();    redisTemplate.setConnectionFactory(redisConnectionFactory());    return redisTemplate;}

}

and then made an RedisCrud class to save token

RedisCrud.saveToken()

private final RedisTemplate<String, String> redisTemplate;private RedisConf redisConf;public RedisCrud(RedisConf redisConf){    this.redisConf = redisConf;    redisTemplate = this.redisConf.redisTemplate();}public boolean saveToken(String key, String value) throws Exception{    logger.info("Key : "+key+", Value : "+value);    try{        logger.info(redisTemplate.toString());        logger.info(redisTemplate.opsForValue().toString());        redisTemplate.opsForValue().set(key, value);        return true;    }catch(Exception e){        throw new Exception("Redis Exception occur",e);    }}

and then I made an service class that will call saveToken()TokenService class

public boolean saveToken(String token) throws Exception{    JwtParser parser = Jwts.parserBuilder().setSigningKey(secretKey).build();    Claims claims = parser.parseClaimsJws(token).getBody();    String key = claims.getSubject();    try{        redis.saveToken(key, token);        return true;    }catch(Exception e){        throw new Exception("Saving token error",e);    }}

I want to solve this error and test redis in local.How can I solve this problem??