使用powermock和Jersey Test + TestNg测试Jersey休息服务时的问题 [英] Issue when test a Jersey rest service using powermock with Jersey Test + TestNg
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 interfaceorg.testng.IObjectFactory
viz.,org.powermock.modules.testng.PowerMockObjectFactory
(or) by extendingorg.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})
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