Illia Seleznov - Integration tests for Spring Boot application

Integration testing for Spring Boot
application

Testing levels
Testing the smallest available units
Testing few or more modules
System testing is all about validating and verifying the
functional design specifications
and seeing how all the modules work together
Acceptance tests are executed to verify if the product
meets the acceptance criteria defined
during the requirements phase

If my unit tests are a success, does
my application work correctly?
● Is my DAO working correctly?
public Boolean existsByUsername(String username);
● Are my transactions working?
@Transactional(rollbackFor = Exception.class)
public ShopOrder makeOrder(Long customerId, ShopOrder shopOrder) {...
● Are my exception handling working
@ControllerAdvice
public class CustomExceptionHandler{...

How to check it?
● No tests – I'm a world champion in
programming
● Unit tests – just enough
● Manual testing
● Automation testing

How we can test fast
● Embedded server
● Embedded DB
● Use application domain model

Configuration
@RunWith(SpringJUnit4ClassRunner.class)
@WebIntegrationTest("server.port:0")
@SpringApplicationConfiguration(classes =
{IntegrationTestConfig.class,
DreamShopApplication.class})
@TestPropertySource(locations="classpath:test
.properties")

Illia Seleznov - Integration tests for Spring Boot application

Problems
● Slow
● Tests are not independent!!!

How we can improve this?
● Avoid changing common data in test
● Rebuild database after each test
● Use MockMVC

Contacts
● manbe@mail.com
● Repository: https://github.com/manbe/dream-
shop

Illia Seleznov - Integration tests for Spring Boot application

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