GeeCON 2014 - Spring Testing

Spring Testing
Mattias Severson

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

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

Architecture
AccountService
BankController
ImmutableAccount
AccountEntityAccountRepository

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

@ContextConfiguration
!
@ContextConfiguration("classes=AppConfig.class")
!
@Autowired
!
@Test
// verify ...
}
}
!
!
!
@Autowired
!
@Test
// verify ...
}
}

SpringJUnit4ClassRunner
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(“classes=TestConfig.class")
!
@Autowired
!
@Test
// verify ...
}
}
!
@ContextConfiguration("classes=TestConfig.class
!
@Autowired
!
@Test
// verify ...
}
}

Embedded DB
AccountRepository AccountEntity

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();
}
}

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>

Tx Test
!
@ContextConfiguration("/application-context.xml")
!
@Test
// call DB
}
!
}
@Transactional
!
!
!
!
@Test
// call DB
}
!

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

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

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

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

XML Profiles
<beans ...>
!
!
<bean id="dataSource">

</bean>
!
!
!
<bean id="dataSource">

</bean>
!
!
</beans>
!
!
<beans profile="testProfile">
!
!
!
</beans>
!
<beans profile="prodProfile">
!
!
!
</beans>
!

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

Demo
AccountRepository AccountEntity
AccountService ImmutableAccount

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>

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

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

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">

</beans> 
@Profile("default")

Profile Alternatives
• .properties
• Maven Profile

Test Controller
AccountRepository
AccountService
AccountEntity
ImmutableAccount
BankController

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

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

MockMvc
.build();
.setMessageConverters(...)
.setValidator(...)
.setConversionService(...)
.addInterceptors(...)
.setViewResolvers(...)
.setLocaleResolver(...)
.addFilter(...)
.build();

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));

@WebAppConfiguration
public class WebApplicationTest {
!
@Autowired
WebApplicationContext wac;
!

!
@Autowired
!
!
@Autowired
!
MockMvc mockMvc;
!
@Before
public void setUp() {
MockMvcBuilders.
.webAppContextSetup(wac)
.build();
}

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

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

Spring Boot Integration Tests
@SpringApplicationConfiguration
@IntegrationTest

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

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");
}

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

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

GeeCON 2014 - Spring Testing

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