Java 运行单元测试时出现Spring上下文问题
我正在使用Spring和Mockito运行一些单元测试。 我在springcontext.xml中配置了模拟,如下所示:Java 运行单元测试时出现Spring上下文问题,java,unit-testing,spring,maven,mockito,Java,Unit Testing,Spring,Maven,Mockito,我正在使用Spring和Mockito运行一些单元测试。 我在springcontext.xml中配置了模拟,如下所示: <bean id="featureEndpoint" class="org.mockito.Mockito" factory-method="mock"> <constructor-arg value="com.company.blah.blah.FeatureEndpoint" /> </bean> @ContextConfig
<bean id="featureEndpoint" class="org.mockito.Mockito" factory-method="mock">
<constructor-arg value="com.company.blah.blah.FeatureEndpoint" />
</bean>
@ContextConfiguration(locations= {"/springcontext.xml"})
public class FeatureEndpointValidationTest extends JsonEndpointValidationTest {
private FeatureEndpoint featureEndpoint;
@BeforeClass
public void setUp() {
featureEndpoint = getBean("featureEndpoint");
super.setEndpoint(featureEndpoint);
}
@Test
.
.
.
}
当我运行这个测试时,getBean()抛出一个NPE,因为上下文为null。
但是,如果我将测试类重命名为TestEndpoint(或任何没有字符串'Feature'的类),它运行得非常好。我对这种行为感到困惑。我搜索了所有其他配置文件,查找任何命名冲突,但没有一个配置文件有任何包含名称'Feature'的bean。关于为什么会发生这种情况的线索
以下是引发的异常的跟踪:
java.lang.NullPointerException
at com.foo.bar.UnitTest.getBean(UnitTest.java:14)
at com.foo.bar.service.api.rest.FeatureEndpointValidationTest.setUp(FeatureEndpointValidationTest.java:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:580)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:398)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:145)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:82)
at org.testng.internal.TestMethodWorker.invokeBeforeClassMethods(TestMethodWorker.java:167)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:104)
at org.testng.TestRunner.runWorkers(TestRunner.java:712)
at org.testng.TestRunner.privateRun(TestRunner.java:582)
at org.testng.TestRunner.run(TestRunner.java:477)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:324)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:319)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:292)
at org.testng.SuiteRunner.run(SuiteRunner.java:198)
at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:821)
at org.testng.TestNG.runSuitesLocally(TestNG.java:788)
at org.testng.TestNG.run(TestNG.java:708)
at org.apache.maven.surefire.testng.TestNGExecutor.run(TestNGExecutor.java:62)
at org.apache.maven.surefire.testng.TestNGDirectoryTestSuite.execute(TestNGDirectoryTestSuite.java:141)
at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
谢谢您正在使用sprint测试,这很好。请尝试如下设置您的测试:
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations="classpath:springcontext.xml)
public class MyTest {
@Autowired
private FeatureEndpoint featureEndpoint;
@Test
public void testSomething() { }
}
在Spring JUnit runner类中使用@Autowired
注释,所有的Autowired变量将被初始化为它们对应的相同类型的bean。您还可以使用@Qualifier(“featureEndpoint”)
来指定bean名称
如果您只是想访问上下文,请实现ApplicationContextAware
,它包含一个setApplicationContext
方法
此外,如果您想验证bean,可以实现initializebean
,在spring容器中,实例化和初始化后将调用它,您可以断言FeatureEndpoint是否为null
但是,整个等式的关键是使用SpringJUnit4ClassRunner
runner类