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Testing Redis Cache Operations in spring-boot-demo

This test suite validates Redis caching functionality in a Spring Boot application, focusing on basic cache operations like retrieval, storage, and deletion. The tests verify cache hit/miss scenarios and proper cache invalidation for user data management.

Test Coverage Overview

The test suite provides comprehensive coverage of Redis caching operations for user data management.

Key functionality tested includes:

Cache hit verification through repeated queries
Cache population after data insertion
Cache invalidation during delete operations
Chinese character handling in cached data

Integration points focus on the interaction between UserService and Redis cache implementation.

Implementation Analysis

The testing approach utilizes JUnit 4 framework with Spring Boot test infrastructure for Redis cache validation. The implementation follows a systematic pattern of operation-verification pairs, using log debugging to confirm cache behavior.

Framework-specific features include:

@Slf4j for logging cache operations
@Autowired for dependency injection
Spring Boot test context configuration

Technical Details

Testing tools and configuration:

JUnit 4 test framework
Spring Boot test utilities
Lombok for logging support
Redis cache configuration
User entity model for test data

Best Practices Demonstrated

The test suite demonstrates excellent testing practices for cache validation scenarios. Notable practices include:

Isolated test methods for specific cache operations
Clear test method naming conventions
Comprehensive verification of cache hits and misses
Proper test documentation and logging
Systematic cache state verification

xkcoding/spring-boot-demo

demo-cache-redis/src/test/java/com/xkcoding/cache/redis/service/UserServiceTest.java

            
package com.xkcoding.cache.redis.service;

import com.xkcoding.cache.redis.SpringBootDemoCacheRedisApplicationTests;
import com.xkcoding.cache.redis.entity.User;
import lombok.extern.slf4j.Slf4j;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;

/**
 * <p>
 * Redis - 缓存测试
 * </p>
 *
 * @author yangkai.shen
 * @date Created in 2018-11-15 16:53
 */
@Slf4j
public class UserServiceTest extends SpringBootDemoCacheRedisApplicationTests {
    @Autowired
    private UserService userService;

    /**
     * 获取两次，查看日志验证缓存
     */
    @Test
    public void getTwice() {
        // 模拟查询id为1的用户
        User user1 = userService.get(1L);
        log.debug("【user1】= {}", user1);

        // 再次查询
        User user2 = userService.get(1L);
        log.debug("【user2】= {}", user2);
        // 查看日志，只打印一次日志，证明缓存生效
    }

    /**
     * 先存，再查询，查看日志验证缓存
     */
    @Test
    public void getAfterSave() {
        userService.saveOrUpdate(new User(4L, "测试中文"));

        User user = userService.get(4L);
        log.debug("【user】= {}", user);
        // 查看日志，只打印保存用户的日志，查询是未触发查询日志，因此缓存生效
    }

    /**
     * 测试删除，查看redis是否存在缓存数据
     */
    @Test
    public void deleteUser() {
        // 查询一次，使redis中存在缓存数据
        userService.get(1L);
        // 删除，查看redis是否存在缓存数据
        userService.delete(1L);
    }

}