[英]Junit for Spring Cache Manager
我在应用程序中使用Spring缓存层,在编写单元测试以使用Mockito测试Spring缓存层时遇到了一个问题。
请针对我的问题参考以下代码:
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;
}
}
用于服务层的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));
}
}
例外:
我得到一个“ java.lang.AssertionError:
”,因为缓存层不起作用,并且调用已传递给存储库对象(两次),该对象已返回上面的“ customer2”模拟对象,即,存储库方法已被调用两次通过服务层获取相同的密钥。
另外,请注意,我正在使用“ Mockito”框架进行测试。
我已经尝试过在Spring缓存上使用google进行单元测试,并且还引用了以下URL,该URL几乎使用相同的概念,但不适用于我的上述代码。
如何在Spring数据存储库上测试Spring的声明式缓存支持?
您能帮忙解决以上例外情况吗?
Spring Cache Manager依靠Spring管理应用程序。 使用PowerMockRunner
无法获得它,您需要使用SpringJUnit4Runner
。 您仍然可以通过编程方式使用PowerMock或Mockito,但不能作为Runner使用。
通常,您会将单元测试转换为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
}
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