TestNG和Spring 3 [英] TestNG and Spring 3

问题描述

使用Spring进行单元测试的最佳实践方法是什么?我假设结合使用TestNG& amp;使用Spring 3的jmockit还不错，所以这就是我现在正在做的事情，但是如果我偏离路线为我的新Spring项目选择工具，请立即告诉我. :-)

What is the best practice way to do unit testing with Spring? I assume the combination TestNG & jmockit with Spring 3 isn't bad, so that's what I'm doing right now, but if I'm off course selecting the tools for my fresh Spring project, please tell me right away. :-)

无论如何，我已经创建了一个要测试的实体，但是我不确定如何从Spring上下文实际运行TestNG.我创建了一个简单的测试类

Anyways, I've created an entity that I want to test, but I'm not sure how to actually run the TestNG from the Spring context. I've created a simple test class

package com.mydomain.data.entities.test;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.testng.AbstractTestNGSpringContextTests;
import org.testng.Assert;
import org.testng.annotations.*;

@ContextConfiguration(locations={"classpath:applicationContext.xml"}) 
public class SimpleTest extends AbstractTestNGSpringContextTests {

    @Autowired
    private ApplicationContext applicationContext;

    @BeforeClass
    protected void setUp() throws Exception {
        Assert.assertNotNull(applicationContext);
    }

    @Test
    public void testNothing() {

    }

}

使用applicationContext.xml导入bean来设置模型和业务层.首先，我希望它使用Project/WebRoot/WEB-INF中的applicationContext.xml，而此测试的源代码位于Project/src/com/mydomain/data/entities/test中，但我相信/applicationContext.xml会给我Projects/src，与classpath一样:这是正确的吗?

with applicationContext.xml importing beans for setting up the model and business layer. First off all, I'd like it to use the applicationContext.xml from Project/WebRoot/WEB-INF, whereas the source for this test lives in Project/src/com/mydomain/data/entities/test, but I believe that /applicationContext.xml would give me Projects/src, same as classpath: Is this correct?

此外，既然我正在使用Web应用程序将使用的模型和业务层，那么我应该期望它们的行为类似.但是，当我在测试中启动TestNG时，它表示: org.hibernate.cfg.ExtendedMappings类具有接口org.hibernate.cfg.Mappings作为超类:

Furthermore, now that I'm using the model and business layers that my web application would use, I should expect it to behave similarly. But, when I launch TestNG on the test, it sais: class org.hibernate.cfg.ExtendedMappings has interface org.hibernate.cfg.Mappings as super class:

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in URL [file:/Users/niklas/Documents/Eclipse/Project/WebRoot/WEB-INF/Project-Model.xml]: Invocation of init method failed; nested exception is java.lang.IncompatibleClassChangeError: class org.hibernate.cfg.ExtendedMappings has interface org.hibernate.cfg.Mappings as super class
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1393)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:511)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:449)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:289)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:286)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeansOfType(DefaultListableBeanFactory.java:352)
    at org.springframework.beans.factory.BeanFactoryUtils.beansOfTypeIncludingAncestors(BeanFactoryUtils.java:266)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.detectPersistenceExceptionTranslators(PersistenceExceptionTranslationInterceptor.java:121)
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.<init>(PersistenceExceptionTranslationInterceptor.java:77)
    at org.springframework.dao.annotation.PersistenceExceptionTranslationAdvisor.<init>(PersistenceExceptionTranslationAdvisor.java:70)
    at org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor.setBeanFactory(PersistenceExceptionTranslationPostProcessor.java:99)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeAwareMethods(AbstractAutowireCapableBeanFactory.java:1414)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1381)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:511)
    ... 38 more
Caused by: java.lang.IncompatibleClassChangeError: class org.hibernate.cfg.ExtendedMappings has interface org.hibernate.cfg.Mappings as super class
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:700)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
    at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:319)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:330)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:254)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:399)
    at org.hibernate.cfg.AnnotationConfiguration.createExtendedMappings(AnnotationConfiguration.java:187)
    at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:277)
    at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1162)
    at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:667)
    at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1452)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1390)
    ... 53 more

这是什么，为什么我要得到这个?有任何线索吗?

What is this and why am I getting this? Any clues?

我的sessionFactory看起来像这样

My sessionFactory looks like this

  <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="annotatedClasses">
      <list>
       <!-- Entity classes from package com.mydomain.data.entities -->
      </list>
    </property>
    <property name="hibernateProperties">
      <props>
        <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
        <prop key="hibernate.show_sql">false</prop>
      </props>
    </property>
  </bean>

推荐答案

现在，问题似乎与Spring或TestNG都不相关.关键部分是:

Now the problem doesn't seem to be related to any of Spring or TestNG. The key part is:

 java.lang.IncompatibleClassChangeError: class org.hibernate.cfg.ExtendedMappings has interface org.hibernate.cfg.Mappings as super class

您确定您的CLASSPATH正常吗? IE.您有兼容版本的Hibernate模块，那里没有重复的内容吗?

Are you sure your CLASSPATH is OK? I.e. you have compatible version of Hibernate modules and no repetitions there?

如果您创建一个执行以下操作的简单TestNG测试，该怎么办:

What if you create a simple TestNG test that does the following:

Class.forName("org.hibernate.cfg.ExtendedMappings");

?

这篇关于TestNG和Spring 3的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！