How can i use redisService inside a spock test i need to cleanup the redis database for setup and cleanup

Question

I have a class that stores a value in redis. When i test it, it works properly. If i run it for the second tome it will fail as there is an entry on redis already. I want to cleanup the redis database before running the test and after it is finished but i haven't been able to do that.

I am running grails 2.2.4.

I have tried the @autowired annotation, @mock(RedisService) , also redisService = grails.util.Holders.applicationContext.getBean('redisService') as RedisService and i am not able to create an instance of the redisService.

This is what i am trying to do:

redisService.withRedis { Jedis redis ->
                redis.del("test")
            }

The expected result would be that the entry is deleted from redis.

I have gotten several errors like: java.lang.NullPointerException: Cannot get property 'resource' on null object and java.lang.IllegalArgumentException: ServletContext must not be null

Any help would be appreciated.

Answer 1

In case you are like me wondering how exactly am I going to do that:

@Mock(RedisService) // above class definition

def setup(){
    def redisPoolMock = new Object()
    redisPoolMock.metaClass.getResource =  { ->
        throw new JedisConnectionException('Generated by a mocked redisPool')
        // Or you can put the value in here maybe
    }
    redisService = new RedisService()
    redisService.redisPool = redisPoolMock
    service.redisService = redisService
}

And now you can test your service.

Answer 2

似乎我只需要在调用 redis 时使用注释 @Mock(RedisService) 和 metaClass 。