我的辅助方法使用 ehcache,以减少对 Db 的查询。现在想实现JUnit+Mockito测试,确保ehcache正常工作。有这样的测试变体:
@Autowired
private DBService service;
@Autowired
private DiscountHelper discountHelper;
@Autowired
private CacheManager cacheManager;
@Before
public void setUp() throws Exception {
assertNotNull(cacheManager);
}
@Test
public void testGetDiscountWithCache() throws RuntimeException,
InterruptedException {
String id1 = "id1";
String id2 = "id2";
String id3 = "id3";
List<String> discountsId = new ArrayList<String>();
discountsId.add(id1);
discountsId.add(id2);
discountsId.add(id3);
List<Map<String, Object>> attrList = new ArrayList<Map<String, Object>>();
attrList.add(new Discount().getAttributes());
attrList.add(new Discount().getAttributes());
attrList.add(new Discount().getAttributes());
Cache cache = cacheManager.getCache(DiscountHelper.CACHE_NAME);
assertNotNull(cache);
assertEquals(0, cache.getSize());
// First run with empty cache
when(service.getAllItems(eq(Discount.TABLE_NAME))).thenReturn(attrList);
List<Discount> actualResult = discountHelper
.getAllDiscountsUsingCache();
assertNotNull(actualResult);
assertEquals(attrList.size(), actualResult.size());
verify(service).getAllItems(eq(Discount.TABLE_NAME));
cache = cacheManager.getCache(DiscountHelper.CACHE_NAME);
// In cache should be 1 record
assertNotNull(cache);
assertEquals(1, cache.getSize());
}
测试方法是:
@Cacheable(cacheName = CACHE_NAME, refreshInterval = 1000 * 900, decoratedCacheType = DecoratedCacheType.REFRESHING_SELF_POPULATING_CACHE)
public List<Discount> getAllDiscountsUsingCache() throws RuntimeException,
InterruptedException {
List<Map<String, Object>> result = dbService
.getAllItems(Discount.TABLE_NAME);
List<Discount> discountList = new ArrayList<Discount>();
for (Map<String, Object> entry : result) {
discountList.add(new Discount(entry));
}
return discountList;
}
这非常有效。在测试中,我确信在调用方法后我会在缓存中得到一些东西。如您所见,我还验证了在 db 服务中调用方法 getAllItems。这对于第一次调用很有用。接下来,我在同一个测试中添加了对 discountHelper.getAllDiscountsUsingCache() 的第二次调用,如下所示:
when(service.getAllItems(eq(Discount.TABLE_NAME))).thenReturn(attrList);
actualResult = discountHelper
.getAllDiscountsUsingCache();
assertNotNull(actualResult);
assertEquals(attrList.size(), actualResult.size());
verify(service, times(0)).getAllItems(eq(Discount.TABLE_NAME));
所以我只想检查在第二次调用时不会通过方法 getAllItems 通过此验证调用 DB 服务: verify(service, times(0)).getAllItems(eq(Discount.TABLE_NAME)); 并且结果将从缓存中获取。
但它不起作用,我仍然调用 DB 方法。我找到本教程http://blog.goyello.com/2010/07/29/quick-start-with-ehcache-annotations-for-spring/并尝试使用委托对象进行 ehcache 测试的变体,但它仍然调用 db 方法在测试。怎么了?顺便说一句,正如我在 tomcat 的日志中看到的那样,在生产环境中 ehcache 工作得很好,所以这是一个测试问题。任何建议如何解决它?