使用powermock和Jersey Test + TestNg测试Jersey休息服务时的问题

本文介绍了使用powermock和Jersey Test + TestNg测试Jersey休息服务时的问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

开发了使用Jersey的休息服务。现在，我想为此Web服务编写一些集成测试，但是由于不是已经实现了Web服务中使用的每个类，因此我需要模拟其中的一些。例如，我有以下类：

A rest service using Jersey developed. Now I want to write some integration tests for this web service but since not every class being used from the web service is already implemented I need to mock some of them. For example I have the following class:

public class ServiceA { public String getService() { return null; }} @Path("/myresource") public class ResourceController { @GET @Produces("text/plain") public String getIt() { ServiceA a = new ServiceA(); return a.getService(); }}

然后我要测试使用Jersey测试框架和TestNg进行集成测试Powerpock（使用构造函数模拟新对象）。

Then i want to test do integration test with Jersey test framework and TestNg + Powermock (mock new object with constructor).

import org.glassfish.jersey.server.ResourceConfig; import org.glassfish.jersey.test.JerseyTestNg; import org.glassfish.jersey.test.jdkhttp.JdkHttpServerTestContainerFactory; import org.glassfish.jersey.test.spi.TestContainerFactory; import org.mockito.Mockito; import org.powermock.api.mockito.PowerMockito; import org.powermock.core.classloader.annotations.PowerMockIgnore; import org.powermock.core.classloader.annotations.PrepareForTest; import org.powermock.modules.testng.PowerMockObjectFactory; import org.testng.Assert; import org.testng.IObjectFactory; import org.testng.annotations.ObjectFactory; import org.testng.annotations.Test; import javax.ws.rs.core.Application; import javax.ws.rs.core.Response; import static org.powermock.api.mockito.PowerMockito.mock; @PowerMockIgnore({"javax.ws.*", "org.glassfish.*"}) @PrepareForTest({ResourceController.class}) public class ResourceControllerTest extends JerseyTestNg.ContainerPerMethodTest { @Override protected Application configure() { return new ResourceConfig(ResourceController.class); } @Override protected TestContainerFactory getTestContainerFactory() { return new JdkHttpServerTestContainerFactory(); } @ObjectFactory public IObjectFactory getObjectFactory() { return new PowerMockObjectFactory(); } @Test public void getItTest() { ServiceA mockA = mock(ServiceA.class); Mockito.when(mockA.getService()).thenReturn("service a"); PowerMockito.whenNew(ServiceA.class).withAnyArguments().thenReturn(mockA); Response result = target("myresource").request().get(); Assert.assertEquals(result.readEntity(String.class), "service a"); } }

我的pom依赖：

<dependency> <groupId>org.glassfish.jersey.test-framework.providers</groupId> <artifactId>jersey-test-framework-provider-inmemory</artifactId> <version>2.21</version> </dependency> <dependency> <groupId>org.glassfish.jersey.test-framework</groupId> <artifactId>jersey-test-framework-core</artifactId> <version>2.21</version> </dependency> <dependency> <groupId>org.powermock</groupId> <artifactId>powermock-module-testng</artifactId> <version>1.7.0</version> <scope>test</scope> </dependency> <dependency> <groupId>org.powermock</groupId> <artifactId>powermock-api-mockito</artifactId> <version>1.7.0</version> <scope>test</scope> </dependency>

但是在运行时，getIt（）方法中的实例ServiceA仍被初始化为新的ServiceA对象，而不是模拟对象。

But in runtime, the instance ServiceA in getIt() method is still initalized as new ServiceA object not the mockA object.

对此有任何想法吗？谢谢，

Any idea about it? Thanks,

如果添加PowerMockIgnore（{ javax.ws。， org.glassfish。}），则请参见以下异常：

if add PowerMockIgnore({"javax.ws.", "org.glassfish."}), then see below exception:

java.lang.ExceptionInInitializerError at org.mockito.internal.exceptions.stacktrace.ConditionalStackTraceFilter.<init>(ConditionalStackTraceFilter.java:17) at org.mockito.exceptions.base.MockitoException.filterStackTrace(MockitoException.java:41) at org.mockito.exceptions.base.MockitoException.<init>(MockitoException.java:30) at org.mockito.exceptions.misusing.MockitoConfigurationException.<init>(MockitoConfigurationException.java:18) at org.mockito.internal.configuration.plugins.PluginLoader.loadImpl(PluginLoader.java:66) at org.mockito.internal.configuration.plugins.PluginLoader.loadPlugin(PluginLoader.java:24) at org.mockito.internal.configuration.plugins.PluginRegistry.<init>(PluginRegistry.java:12) at org.mockito.internal.configuration.plugins.Plugins.<clinit>(Plugins.java:11) at org.mockito.internal.util.MockUtil.<clinit>(MockUtil.java:24) at org.mockito.internal.configuration.injection.scanner.MockScanner.<init>(MockScanner.java:22) at org.mockito.internal.configuration.InjectingAnnotationEngine.injectMocks(InjectingAnnotationEngine.java:96) at org.powermock.api.mockito.internal.configuration.PowerMockitoInjectingAnnotationEngine.process(PowerMockitoInjectingAnnotationEngine.java:35) at org.powermock.api.extension.listener.AnnotationEnabler.injectSpiesAndInjectToSetters(AnnotationEnabler.java:72) at org.powermock.api.extension.listener.AnnotationEnabler.beforeTestMethod(AnnotationEnabler.java:64) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.powermock.reflect.internal.WhiteboxImpl.performMethodInvocation(WhiteboxImpl.java:1846) at org.powermock.reflect.internal.WhiteboxImpl.invokeMethod(WhiteboxImpl.java:700) at org.powermock.reflect.Whitebox.invokeMethod(Whitebox.java:415) at org.powermock.modules.testng.internal.PowerMockTestNGMethodHandler.injectMocksUsingAnnotationEnabler(PowerMockTestNGMethodHandler.java:76) at org.powermock.modules.testng.internal.PowerMockTestNGMethodHandler.invoke(PowerMockTestNGMethodHandler.java:48) at com.hp.ucmdb.rest.ResourceControllerTest_$$_jvstb11_0.setUp(ResourceControllerTest_$$_jvstb11_0.java) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:86) at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:514) at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:215) at org.testng.internal.Invoker.invokeMethod(Invoker.java:589) at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:820) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1128) at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112) at org.testng.TestRunner.privateRun(TestRunner.java:782) at org.testng.TestRunner.run(TestRunner.java:632) at org.testng.SuiteRunner.runTest(SuiteRunner.java:366) at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361) at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319) at org.testng.SuiteRunner.run(SuiteRunner.java:268) at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52) at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86) at org.testng.TestNG.runSuitesSequentially(TestNG.java:1244) at org.testng.TestNG.runSuitesLocally(TestNG.java:1169) at org.testng.TestNG.run(TestNG.java:1064) at org.testng.IDEARemoteTestNG.run(IDEARemoteTestNG.java:72) at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:127) Caused by: java.lang.NullPointerException at org.mockito.internal.configuration.plugins.Plugins.getStackTraceCleanerProvider(Plugins.java:17) at org.mockito.internal.exceptions.stacktrace.StackTraceFilter.<clinit>(StackTraceFilter.java:21) ... 49 more

推荐答案

我相信模拟可能不会发生，因为您没有Po

I believe the mock is perhaps not happening because you dont have the PowerMock's objectfactory implementation wired into TestNG.

为了使powermockito和TestNG相互配合，您必须执行以下操作：

In order to get powermockito and TestNG to work with each other you have to do the following :

• 配置TestNG以使用PowerMock对象工厂：您可以通过 object-factory 中的属性来执行此操作套件xml的c $ c>< suite> 标记，或通过 @ org.testng.annotations.ObjectFactory 带注释的方法返回Powermock的TestNG接口 org.testng.IObjectFactory 的实现，即 org.powermock.modules.testng.PowerMockObjectFactory （或）通过扩展 org.powermock.modules.testng.PowerMockTestCase
• 使用@PrepareForTest来准备要由PowerMockit模拟的静态类

• Configure TestNG to use the PowerMock object factory : You can do this either via the attribute object-factory in your <suite> tag of your suite xml or via an @org.testng.annotations.ObjectFactory annotated method which returns the powermock's implementation of TestNG interface org.testng.IObjectFactory viz., org.powermock.modules.testng.PowerMockObjectFactory (or) by extending org.powermock.modules.testng.PowerMockTestCase
• Use @PrepareForTest to prepare your static class for being mocked by PowerMockit

我在代码中使用PowerMock的Object工厂接线找不到对您的引用。您可以尝试这样做，看看是否有帮助吗？

I couldnt find any reference to you using the PowerMock's Object factory wiring in, in your code. Can you please try doing that and see if that helps ?

请在此处中查看有关完整的详细信息。

Please see here for full details.

更新： 为了摆脱ClassCastExceptions，您需要添加以下内容

Update: In order to get past the ClassCastExceptions you would need to add the below annotation to your class.

@org.powermock.core.classloader.annotations.PowerMockIgnore({"javax.ws.*", "org.glassfish.*"})

有关此操作的更多详细信息，请参阅这个stackoverflow 问题

For more details around this, please refer to this stackoverflow question

PS：我假设您正在使用以下注释使powermock为模拟准备测试类（您的问题示例中显示了其他内容）

PS : I am assuming that you are using the following annotation to have powermock prepare your test class for mocking (Your sample in your question is showing something else)

@org.powermock.core.classloader.annotations.PrepareForTest({ResourceController.class})