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Testing EhCache Integration for User Service in spring-boot-demo

This test suite validates the functionality of EhCache integration in a Spring Boot application, focusing on cache operations for user data management. The tests verify cache hit/miss scenarios, data persistence, and cache eviction behaviors.

Test Coverage Overview

The test suite provides comprehensive coverage of EhCache operations in a user service context.

Key areas tested include:

Cache hit verification through repeated queries
Cache population after data saves
Cache eviction on delete operations
Integration between service layer and cache layer

Implementation Analysis

The testing approach employs JUnit with Spring Boot test framework integration. The implementation utilizes @Test annotations with focused test methods that validate specific cache behaviors. Each test case follows a clear arrange-act-assert pattern with logging verification for cache operations.

Technical patterns include:

Service autowiring for dependency injection
Log-based cache verification
Isolated test scenarios for each cache operation

Technical Details

Testing tools and configuration:

JUnit test framework
Spring Boot test utilities
Lombok @Slf4j for logging
EhCache configuration for test context
User entity model for test data

Best Practices Demonstrated

The test suite exemplifies several testing best practices:

Clear test method naming reflecting test purpose
Isolated test scenarios for each cache operation
Proper test documentation through comments
Verification through logging assertions
Clean separation of test cases for different cache operations

xkcoding/spring-boot-demo

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

            
package com.xkcoding.cache.ehcache.service;

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

/**
 * <p>
 * ehcache缓存测试
 * </p>
 *
 * @author yangkai.shen
 * @date Created in 2018-11-16 16:58
 */
@Slf4j
public class UserServiceTest extends SpringBootDemoCacheEhcacheApplicationTests {

    @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, "user4"));

        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ehcache中存在缓存数据
        userService.get(1L);
        // 删除，查看ehcache是否存在缓存数据
        userService.delete(1L);
    }
}