springboot整合kafka超时的问题，错误提示如下所示

Caused by: org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata

2019-10-10 00:06:20,395 ERROR [main] o.s.t.c.TestContextManager [TestContextManager.java:250] Caught exception while allowing TestExecutionListener [org.springframework.test.context.web.ServletTestExecutionListener@78e117e3] to prepare test instance [com.nowcoder.community.KafkaTests@9b3be1c]

java.lang.IllegalStateException: Failed to load ApplicationContext

测试代码如下：

import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.core.KafkaTemplate;
import org.springframework.stereotype.Component;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
@ContextConfiguration(classes = CommunityApplication.class)
public class KafkaTests {

    @Autowired
    private KafkaProducer kafkaProducer;

    @Test
    public void testKafka() {
        kafkaProducer.sendMessage("test", "你好");
        kafkaProducer.sendMessage("test", "在吗");

        try {
            Thread.sleep(1000 * 10);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }

}

@Component
class KafkaProducer {

    @Autowired
    private KafkaTemplate kafkaTemplate;

    public void sendMessage(String topic, String content) {
        kafkaTemplate.send(topic, content);
    }

}

@Component
class KafkaConsumer {

    @KafkaListener(topics = {"test"})
    public void handleMessage(ConsumerRecord record) {
        System.out.println(record.value());
    }


}

测试方法时报错，Caused by: org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata
求大佬看看。