我正在使用 PowerMock 和 Mockito 来测试 Spring 控制器。
我定义了 TestController 类（见下文，Snipper #1），并为它定义了一个单元测试（见下文，Snipper #2）。但是当我尝试对它进行单元测试时，我得到了一个异常（见下文，Snipper #3）。
如果我删除 @InjectMocks，删除定义时的 TestController 实例化，并在测试函数中执行 controllerUT = new TestController()，它工作正常（见下文，Snipper #4）。
这让我相信在@InjectMocks 之前不会发生静态替换，我的问题是这是事情的工作方式，还是我做错了什么？有没有更好的方法来设计代码以避免这个问题？我猜人们使用静态日志分配（我没有发明这个）所以之前一定有人遇到过这个问题......
谢谢！
片段#1
@Controller
@RequestMapping("/api/test")
public class TestController {
private static final Logger LOG = LoggerFactory.getLogger(TestController.class);
@Autowired
private GeneralService generalService;
@RequestMapping(method=RequestMethod.GET)
public void doSomethingUseful(
HttpServletRequest request,
HttpServletResponse response) {
// nothing userful to do right now
}
}
片段#2
@RunWith(PowerMockRunner.class)
@PrepareForTest({TestController.class, LoggerFactory.class})
public class TestControllerTest {
@InjectMocks
private TestController controllerUT = new TestController();
@Mock
private GeneralService service;
@Mock
private Logger loggerMock;
@Mock
private HttpServletRequest request;
@Mock
private HttpServletResponse response;
@Before
public void setUp() {
PowerMockito.mockStatic(LoggerFactory.class);
when(LoggerFactory.getLogger(any(Class.class))).
thenReturn(loggerMock);
}
@Test
public void doSomethingUsefulTest() {
controllerUT.doSomethingUseful(request, response);
assert(true);
}
}
片段#3
Failed to auto configure default logger context
Reported exception:
ch.qos.logback.core.joran.spi.JoranException: Parser configuration error occurred
at ch.qos.logback.core.joran.event.SaxEventRecorder.buildSaxParser(SaxEventRecorder.java:86)
at ch.qos.logback.core.joran.event.SaxEventRecorder.recordEvents(SaxEventRecorder.java:57)
at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:132)
at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:96)
at ch.qos.logback.core.joran.GenericConfigurator.doConfigure(GenericConfigurator.java:55)
at ch.qos.logback.classic.util.ContextInitializer.configureByResource(ContextInitializer.java:75)
at ch.qos.logback.classic.util.ContextInitializer.autoConfig(ContextInitializer.java:148)
at org.slf4j.impl.StaticLoggerBinder.init(StaticLoggerBinder.java:84)
at org.slf4j.impl.StaticLoggerBinder.<clinit>(StaticLoggerBinder.java:54)
at org.slf4j.LoggerFactory.bind(LoggerFactory.java:128)
at org.slf4j.LoggerFactory.performInitialization(LoggerFactory.java:108)
at org.slf4j.LoggerFactory.getILoggerFactory(LoggerFactory.java:279)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:252)
at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:265)
at com.basicservice.controller.TestController.<clinit>(TestController.java:39)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:169)
at javassist.runtime.Desc.getClassObject(Desc.java:43)
at javassist.runtime.Desc.getClassType(Desc.java:152)
at javassist.runtime.Desc.getType(Desc.java:122)
at javassist.runtime.Desc.getType(Desc.java:78)
at com.basicservice.controller.TestControllerTest.<init>(TestControllerTest.java:44)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.createTestInstance(PowerMockJUnit44RunnerDelegateImpl.java:188)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.createTest(PowerMockJUnit44RunnerDelegateImpl.java:173)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:195)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:148)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:122)
at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:34)
at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:44)
at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:120)
at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:102)
at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53)
at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:42)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.lang.ClassCastException: org.apache.xerces.jaxp.SAXParserFactoryImpl cannot be cast to javax.xml.parsers.SAXParserFactory
at javax.xml.parsers.SAXParserFactory.newInstance(SAXParserFactory.java:128)
at ch.qos.logback.core.joran.event.SaxEventRecorder.buildSaxParser(SaxEventRecorder.java:79)
... 42 more
片段#4
@RunWith(PowerMockRunner.class)
@PrepareForTest({TestController.class, LoggerFactory.class})
public class TestControllerTest {
private TestController controllerUT;
@Mock
private GeneralService service;
@Mock
private Logger loggerMock;
@Mock
private HttpServletRequest request;
@Mock
private HttpServletResponse response;
@Before
public void setUp() {
PowerMockito.mockStatic(LoggerFactory.class);
when(LoggerFactory.getLogger(any(Class.class))).
thenReturn(loggerMock);
}
@Test
public void doSomethingUsefulTest() {
controllerUT = new TestController();
controllerUT.doSomethingUseful(request, response);
assert(true);
}
}