Spring Testing presented at GeeCON 2014.

1. Spring Testing
Mattias Severson

2. Mattias
@mattiasseverson
!
https://github.com/matsev/spring-testing

3. Agenda
• Basic Spring Testing
• Embedded Database
• Transactions
• Profiles
• Controller Tests
• Spring Boot

4. Bank App

5. Architecture
AccountService
BankController
ImmutableAccount
AccountEntityAccountRepository

6. Basics

7. !
!
public class AccountServiceTest {
!
@Autowired
AccountService aService;
!
@Test
public void testDoSomething() {
aService.doSomething();
// verify ...
}
}
@Autowired

8. @ContextConfiguration
!
@ContextConfiguration("classes=AppConfig.class")
public class AccountServiceTest {
!
@Autowired
AccountService aService;
!
@Test
public void testDoSomething() {
aService.doSomething();
// verify ...
}
}
!
!
public class AccountServiceTest {
!
@Autowired
AccountService aService;
!
@Test
public void testDoSomething() {
aService.doSomething();
// verify ...
}
}

9. SpringJUnit4ClassRunner
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(“classes=TestConfig.class")
public class AccountServiceTest {
!
@Autowired
AccountService aService;
!
@Test
public void testDoSomething() {
aService.doSomething();
// verify ...
}
}
!
@ContextConfiguration("classes=TestConfig.class
public class AccountServiceTest {
!
@Autowired
AccountService aService;
!
@Test
public void testDoSomething() {
aService.doSomething();
// verify ...
}
}

10. Embedded DB
AccountRepository AccountEntity

11. Java Config
@Configuration
public class EmbeddedDbConfig {
!
@Bean(destroyMethod = "shutdown")
public EmbeddedDatabase dataSource() {
return new EmbeddedDatabaseBuilder()
.setType(EmbeddedDatabaseType.HSQL)
.addScript(“classpath:db-schema.sql”)
.addScript(“classpath:db-test-data.sql”)
.build();
}
}

12. XML Config
<jdbc:embedded-database id="dataSource" type="HSQL">
<jdbc:script location="classpath:db-schema.sql"/>
<jdbc:script location="classpath:db-test-data.sql"/>
</jdbc:embedded-database>

13. Demo

14. Transactions

15. Tx Test
!
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/application-context.xml")
public class AccountServiceTest {
!
@Test
public void testDoSomething() {
// call DB
}
!
}
@Transactional
!
!
!
!
@Test
public void testDoSomething() {
// call DB
}
!

16. Avoid False Positives
Always flush() before validation!
!
• Hibernate!
- sessionFactory.getCurrentSession().flush();!
!
• JPA!
- entityManager.flush();

17. Demo

18. No Transactions?
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("...")
public class AccountRepositoryTest {
!
@Autowired
AccountRepository accountRepo;
!
@Before
public void setUp() {
accountRepo.deleteAll();
accountRepo.save(testData);
}
}

19. Spring Profiles

20. Java Config Profile
!
@Configuration
public class EmbeddedDbConfig {
!
@Bean
public DataSource dataSource() {
return new EmbeddedDatabaseBuilder().
// ...
}
}
@Profile(“testProfile”)

21. Component Profile
!
@Component
public class SomeClass implements SomeInterface {
!
}
@Profile(“testProfile”)

22. XML Profiles
<beans ...>
!
!
<bean id="dataSource">
<!-- Test data source -->
</bean>
!
!
!
<bean id="dataSource">
<!-- Production data source -->
</bean>
!
!
</beans>
!
!
<beans profile="testProfile">
!
!
!
</beans>
!
<beans profile="prodProfile">
!
!
!
</beans>
!

23. Tests and Profiles
!
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(“/application-context.xml”)
public class SomeTest {
!
@Autowired
SomeClass someClass;
!
@Test
public void testSomething() { ... }
}
@ActiveProfiles("testProfile")

24. Demo
AccountRepository AccountEntity
AccountService ImmutableAccount

25. web.xml
<web-app ...>
!
!
!
!
!
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
!
</web-app>
!
!
<context-param>
<param-name>spring.profiles.active</param-name>
<param-value>someProfile</param-value>
</context-param>

26. ApplicationContext
AnnotationConfigApplicationContext ctx =
new AnnotationConfigApplicationContext();
ctx.getEnvironment().setActiveProfiles("someProfile");
ctx.register(SomeConfig.class);
ctx.scan("com.jayway.demo");
ctx.refresh();

27. Env Property
System.getProperty(“spring.profiles.active”);
mvn -Dspring.profiles.active=testProfile

28. Default Profiles
ctx.getEnvironment().setDefaultProfiles("...");
System.getProperty("spring.profiles.default");
<context-param>
<param-name>spring.profiles.default</param-name>
<param-value>defaultProfile</param-value>
</context-param>
<beans profile="default">
<!-- default beans -->
</beans>
@Profile("default")

29. Profile Alternatives
• .properties
• Maven Profile

30. Test Controller
AccountRepository
AccountService
AccountEntity
ImmutableAccount
BankController

31. Spring MVC Test Framework
• Call Controllers through DispatcherServlet
• MockHttpServletRequest
• MockHttpServletResponse

32. MockMvc
MockMvc mockMvc = MockMvcBuilders
.standaloneSetup(new BankController())
.build();
MockMvc mockMvc = MockMvcBuilders
.standaloneSetup(new BankController())
.setMessageConverters(...)
.setValidator(...)
.setConversionService(...)
.addInterceptors(...)
.setViewResolvers(...)
.setLocaleResolver(...)
.addFilter(...)
.build();

33. MockMvc
MockMvc mockMvc = MockMvcBuilders
.build();
MockMvc mockMvc = MockMvcBuilders
.standaloneSetup(new BankController())
.setMessageConverters(...)
.setValidator(...)
.setConversionService(...)
.addInterceptors(...)
.setViewResolvers(...)
.setLocaleResolver(...)
.addFilter(...)
.build();

34. Assertions
mockMvc.perform(get("/url")
.accept(MediaType.APPLICATION_XML))
.andExpect(response().status().isOk())
.andExpect(content().contentType(“MediaType.APPLICATION_XML”))
.andExpect(xpath(“key”).string(“value”))
.andExpect(redirectedUrl(“url”))
.andExpect(model().attribute(“name”, value));

35. @WebAppConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/application-context.xml")
@WebAppConfiguration
public class WebApplicationTest {
!
@Autowired
WebApplicationContext wac;
!

36. @WebAppConfiguration
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/application-context.xml")
@WebAppConfiguration
public class WebApplicationTest {
!
@Autowired
WebApplicationContext wac;
!
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("/application-context.xml")
@WebAppConfiguration
public class WebApplicationTest {
!
@Autowired
WebApplicationContext wac;
!
MockMvc mockMvc;
!
@Before
public void setUp() {
MockMvcBuilders.
.webAppContextSetup(wac)
.build();
}

37. Demo

38. Testing Views
• Supported templates
- JSON!
- XML!
- Velocity!
- Thymeleaf!
• Except JSP

39. Spring Boot

40. test
Spring Boot Integration Test
appCtx
DB
dataSrctxMngr
Embedded App Server
HTTP

41. Spring Boot Integration Tests
@SpringApplicationConfiguration
@IntegrationTest

42. Test RESTful API
• RestTemplate
• Selenium
• HttpClient
• ...

43. REST Assured
@Test
public void shouldGetSingleAccount() {
expect().
statusCode(HttpStatus.SC_OK).
contentType(ContentType.JSON).
body("accountNumber", is(1)).
body("balance", is(100)).
when().
get("/account/1");
}

44. Demo

45. Conclusions
• Basic Spring Testing!
• Embedded Database!
• Transactions!
• Profiles!
• Controller Tests!
• Spring Boot

46. Questions?

47. @mattiasseverson
!
https://github.com/matsev/spring-testing