Spring 缓存管理器的 Junit

Question

我在我的应用程序中使用 spring 缓存层，我在编写单元测试以使用 Mockito[=39= 测试 spring 缓存层时遇到问题].

请参考以下代码解决我的问题：

服务层：

public CustomerServiceImpl implements CustomerService { @Autowired private CacheManager cacheManager; @Autowired private CustomerRepository customerRepository;//Repository is simple JPA repository interface which contains findByCustomerName() @Override @CachePut(value = "#customer", key = "#customer.customerName") public Customer insertOrUpdate(Customer customer) { return customerRepository.save(customer); } @Cacheable(value="customersCache", key = "#customerName") public Customer findByCustomerName(String customerName) { Customer customer = customerRepository.findByCustomerName(customerName); return customer; } }

服务层的JUnit测试代码：

@RunWith(PowerMockRunner.class) @PrepareForTest(CustomerServiceImplTest.class) public class CustomerServiceImplTest { @Spy CacheManager cacheManager = new ConcurrentMapCacheManager("customersCache"); @Mock CustomerRepository CustomerRepository; @InjectMocks CustomerServiceImpl customerServiceImpl = new CustomerServiceImpl(); @Before public void setup() { MockitoAnnotations.initMocks(this); } @Test public void testCacheForFindByCustomerName() { Customer customer1 = new Customer(); customer1.setId("1"); customer1.setName("John"); Customer customer2 = new Customer(); customer2.setId("2"); customer2.setName("Sara"); //this should save to cache Mockito.when(CustomerRepository.save(customer1)) .thenReturn(customer1); customerServiceImpl.insertOrUpdate(customer1); //Now it should retreive from cache, but not able to Mockito.when(CustomerRepository.findByCustomerName(Mockito.any(String.class))) .thenReturn(customer1, customer2); Customer result = customerServiceImpl.findByCustomerName("John"); assertThat(result, is(customer1)); result = customerServiceImpl.findByCustomerName("John"); assertThat(result, is(customer1)); } }

异常：

我得到一个“java.lang.AssertionError:”，因为缓存层没有工作并且调用已经传递给存储库对象（两次），它返回了上面的 'customer2' 模拟对象，即已通过服务层为同一密钥调用存储库方法两次。

此外，请注意我正在使用 "Mockito" 框架进行测试。

我已经尝试 google 对 spring 缓存进行单元测试，还参考了下面的 URL，它几乎使用了相同的概念，但它不适用于我的以上代码。

How to test Spring's declarative caching support on Spring Data repositories?

能否请您帮忙解决上述异常？

Answer 1

Spring 缓存管理器依赖于 Spring 管理应用程序。你不能用 PowerMockRunner 得到它，你需要使用 SpringJUnit4Runner。您仍然可以以编程方式使用 PowerMock 或 Mockito，但不能作为 Runner。

通常，您会将单元测试变成 Spring 风格的集成测试，如下所示：

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration
public class SpringTest {

    @Configuration
    @EnableCaching
    static class SpringConfig{
        @Bean
        public CustomerService customerService(){
            return new CustomerServiceImpl(customerRepository());
        }
        @Bean
        public CustomerRepository customerRepository(){
            return Mockito.mock(CustomerRepository.class);
        }
    }

    @Autowired
    CustomerService customerService; // this will contain a proper managed cache

    @Autowired
    CustomerRepository customerRepository; // this is a mockito mock you can fine-tune
}

Spring 缓存管理器的 Junit

Junit for Spring Cache Manager

java

spring

junit

mockito

spring-cache