Comment obtenir la connexion à la base de données dans Spring en utilisant JUnit?

Question

J'essaie de tester les informations correctes fournies par DB en utilisant les services et la bonne logique des méthodes. Dans cet exemple simple, j'utilise seulement l'instruction assertEquals pour comparer l'ID donné pour le roleService, mais je reçois toujours des erreurs. J'ai le code suivant:

[MISE À JOUR]

Méthode d'essai:

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(value = { "classpath:applicationContext.xml" }) 
@Transactional 
@WebAppConfiguration 
@ComponentScan(basePackages ={ "com.project.surveyengine" }, 
      excludeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION, value = Configuration.class) , 
           @ComponentScan.Filter(type = FilterType.ANNOTATION, value = WebConfig.class)}) 
public class RoleServiceTest { 

@Configuration 
    static class ContextConfiguration {  
     @Bean 
     public RoleService roleService() { 
      RoleService roleService = new RoleService(); 
      // set properties, etc. 
      return roleService; 
     } 
    } 

    private final LocalServiceTestHelper helper = 
      new LocalServiceTestHelper(new LocalDatastoreServiceTestConfig() 
        .setDefaultHighRepJobPolicyUnappliedJobPercentage(100)); 

    private Closeable closeable; 

    @Before 
    public void setUp() { 
     helper.setUp(); 
     ObjectifyService.register(Role.class); 
     closeable = ObjectifyService.begin(); 
    } 

    @After 
    public void tearDown() { 
     closeable.close(); 
     helper.tearDown(); 
    } 

    @Autowired 
    private RoleService roleService; 

    @Test 
    public void existsRole() throws Exception{ 
     Role role = roleService.getByName("ROLE_ADMIN"); 
     assertEquals("Correct test", Long.valueOf("5067160539889664"), role.getId()); 
    } 

} 

RoleService est la classe de service qui consultent des informations de base de données à l'aide objectifyService de Google App Engine.

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xmlns:context="http://www.springframework.org/schema/context" 
     xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> 

    <context:annotation-config /> 

    <context:component-scan base-package="com.project.surveyengine.config"/> 

    <!--Controllers--> 
    <bean id="inboxController" class="com.project.surveyengine.controller.InboxController" autowire="byType"></bean> 
    <bean id="mailController" class="com.project.surveyengine.controller.MailController" autowire="byType"></bean> 
    <bean id="loginController" class="com.project.surveyengine.controller.LoginController" autowire="byType"></bean> 
    <bean id="initController" class="com.project.surveyengine.controller.InitController" autowire="byType"></bean> 

    <!--Services--> 
    <bean id="answerService" class="com.project.surveyengine.service.impl.AnswerService" autowire="byType"></bean> 
    <bean id="blobService" class="com.project.surveyengine.service.impl.BlobService" autowire="byType"></bean> 
    <bean id="mailService" class="com.project.surveyengine.service.impl.MailService" autowire="byType"></bean> 
    <bean id="caseService" class="com.project.surveyengine.service.impl.CaseService" autowire="byType"></bean> 
    <bean id="roleService" class="com.project.surveyengine.service.impl.RoleService" autowire="byType"></bean> 
</beans> 

Dans le com.project.surveyengine.config je les trois classes folliwing:

1)

public class MyXmlWebApplicationContext extends XmlWebApplicationContext { 
    protected void initBeanDefinitionReader(XmlBeanDefinitionReader beanDefinitionReader) { 
     super.initBeanDefinitionReader(beanDefinitionReader); 
     if (SystemProperty.environment.value() == SystemProperty.Environment.Value.Production) { 
      beanDefinitionReader.setValidating(false); 
      beanDefinitionReader.setNamespaceAware(true); 
     } 
    } 
} 

2)

@Configuration 
@EnableWebMvc 
public class WebConfig extends WebMvcConfigurerAdapter{  
    @Bean 
    UrlBasedViewResolver resolver(){ 
    UrlBasedViewResolver resolver = new UrlBasedViewResolver(); 
    resolver.setPrefix("/views/"); 
    resolver.setSuffix(".jsp"); 
    resolver.setViewClass(JstlView.class); 
    return resolver; 
    } 

    @Override 
    public void addResourceHandlers(ResourceHandlerRegistry registry) { 
    registry.addResourceHandler("/statics/**").addResourceLocations("/statics/"); 
    }  
} 

3)

@Configuration 
@EnableWebSecurity 
@EnableGlobalMethodSecurity(prePostEnabled = true) 
public class SecurityContext extends WebSecurityConfigurerAdapter {  
    @Override 
    public void configure(WebSecurity web) throws Exception { 
     web.ignoring().antMatchers("/statics/**"); 
    } 

    @Override 
    protected void configure(HttpSecurity http) throws Exception { 
     http 
      .formLogin() 
       //...more code 
    } 
} 

I'm getting this errors:

Dec 20, 2016 4:40:03 PM com.google.appengine.api.datastore.dev.LocalDatastoreService init INFO: Local Datastore initialized: Type: High Replication Storage: In-memory

java.lang.NullPointerException at com.project.surveyengine.service.impl.RoleServiceTest.existsRole(RoleServiceTest.java:111)

RoleServiceTest.java:111 = assertEquals("Correct test", Long.valueOf("5067160539889664"), role.getId()); 

Answer 1

Avez-vous essayé d'ajouter @WebAppConfiguration comme suggéré dans la documentation http://docs.spring.io/spring/docs/current/javadoc-api/org/springframework/test/context/web/WebAppConfiguration.html?

Je Wirte votre code de test de cette manière

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration(value = { "classpath:applicationContext.xml" }) 
@TransactionConfiguration(transactionManager="txMgr", defaultRollback=false) 
@Transactional 
@WebAppConfiguration 
@ComponentScan(basePackages ={ "com.project.surveyengine" }, excludeFilters = { 
       @ComponentScan.Filter(type = FilterType.ANNOTATION, value = Configuration.class) }) 
public class RoleServiceTest { 

    @Autowired 
    private RoleService roleService; 

    @Test 
    public void existsRole() throws Exception{ 
     Role role = roleService.getByName("ROLE_ADMIN"); 
     assertEquals("Correct test", Long.valueOf("5067160539889664"), role.getId()); 
    } 

} 

comme vous pouvez le voir i ajouté le @WebAppConfiguration d'annotation trop

J'espère que cela peut vous aider à