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19-09-2019 - |
题
与Spring进行单元测试的最佳实践方法是什么?我认为与Spring 3的组合测试和JMOCKIT不错,所以这就是我现在正在做的事情,但是如果我离开课程为新鲜春季项目选择工具,请立即告诉我。 :-)
无论如何,我创建了一个要测试的实体,但是我不确定如何从春季上下文中实际运行测试。我创建了一个简单的测试课
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beans来设置模型和业务层。首先,我希望它使用project/webroot/web-inf的applicationContext.xml,而此测试的来源属于Project/src/com/mydomain/dogation/data/entities/test,但我相信这一点/applicationContext.xml会给我项目/SRC,与classPath相同:这是正确的吗?
此外,既然我正在使用我的Web应用程序使用的模型和业务层,我应该期望它的行为类似。但是,当我在测试中启动Testng时,IT SAIS:class org.hibernate.cfg.extendendendMappings将接口org.hibernate.cfg.mappings作为超级类:
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,为什么我得到这个?有线索吗?
我的session factory看起来像这样
<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>
解决方案
现在,这个问题似乎与春季或测试ng无关。关键部分是:
java.lang.IncompatibleClassChangeError: class org.hibernate.cfg.ExtendedMappings has interface org.hibernate.cfg.Mappings as super class
您确定您的班级路径还可以吗?即您有兼容的冬眠模块版本,那里没有重复?
如果您创建一个简单的测试测试,该测试执行以下操作:
Class.forName("org.hibernate.cfg.ExtendedMappings");
?
其他提示
您的测试ckass需要扩展 AbstractTestNgSpringContextTests. 。或者,如果您的代码正在测试数据库,那么要扩展的另一个有用的类是 摘要TransactionalTestngspringContextTests.
对我来说,这个问题是因为我有不同的冬眠版本,而不是因为包括他们在内的第三方。您的项目/POMS扫描以确保您仅使用一个冬眠版本是值得的。
您可能需要尝试Hibernate-Annotations-3.5.0-Beta-1,因为这与Hibernate-Core-3.5.50-Beta-1保持一致。
我仍然有时会得到java.lang.incompatibleclasschangeerror,因为我试图使用使用“旧”注释的Hibernate搜索。
另外,不确定您是否正在运行JBOSS,但是如果您是Core 3.5.0,则会遇到此错误。