测试powermock模拟http服务器超时以进行客户端调用
我需要为connectTimeout和SocketTimeoutexception编写测试用例。 我使用powerMock来创建模拟对象。 以下是我的代码。 但我的模拟对象得到空指针exception。 任何帮助赞赏
package com.util; import java.net.ConnectException; import java.net.SocketTimeoutException; import java.net.URL; import javax.net.ssl.HttpsURLConnection; import org.json.JSONObject; import org.powermock.api.mockito.PowerMockito; import org.powermock.core.classloader.annotations.PowerMockIgnore; import org.powermock.core.classloader.annotations.PrepareForTest; import org.powermock.core.classloader.annotations.SuppressStaticInitializationFor; import org.powermock.modules.testng.PowerMockObjectFactory; import org.powermock.modules.testng.PowerMockTestCase; import org.testng.Assert; import org.testng.IObjectFactory; import org.testng.annotations.ObjectFactory; import org.testng.annotations.Test; @PowerMockIgnore("javax.management.*") @SuppressStaticInitializationFor("com.Sender") @PrepareForTest(Sender.class) public class SenderCatalogTest extends PowerMockTestCase{ @ObjectFactory public IObjectFactory getObjectFactory() { return new PowerMockObjectFactory(); } @Test public void testSocketExceptionEvents() throws Exception{ String url="https://www.google.co.in/"; URL mockURL = PowerMockito.mock(URL.class); PowerMockito.whenNew(URL.class).withArguments(url).thenReturn(mockURL); SocketTimeoutException expectedException = new SocketTimeoutException(); PowerMockito.when(mockURL.openConnection()).thenThrow(expectedException); Sender sender = new Sender(); String input="{\"level\":3,\"event\":{\"name\":\"myevent\",\"Address\":\"xyz\"}}"; JSONObject vent = new JSONObject(input); Assert.assertNotNull(sender.send(vent)); 请找到日志
at com.Sender.send(Sender.java:81) at com.SenderCatalogTest.timeout(SenderCatalogTest.java:33) 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.junit.internal.runners.TestMethod.invoke(TestMethod.java:68) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:316) at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:88) at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:96) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:300) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:131) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.access$100(PowerMockJUnit47RunnerDelegateImpl.java:59) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner$TestExecutorStatement.evaluate(PowerMockJUnit47RunnerDelegateImpl.java:147) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.evaluateStatement(PowerMockJUnit47RunnerDelegateImpl.java:107) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:288) at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:86) at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:208) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:147) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:121) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:33) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:45) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:123) at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:121) at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53) at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 2016-08-19 12:49:34,107 main ERROR Could not reconfigure JMX java.lang.LinkageError: loader constraint violation: loader (instance of org/powermock/core/classloader/MockClassLoader) previously initiated loading for a different type with name "javax/management/MBeanServer" at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:763) at org.powermock.core.classloader.MockClassLoader.loadUnmockedClass(MockClassLoader.java:250) at org.powermock.core.classloader.MockClassLoader.loadModifiedClass(MockClassLoader.java:194) at org.powermock.core.classloader.DeferSupportingClassLoader.loadClass(DeferSupportingClassLoader.java:71) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at org.apache.logging.log4j.core.jmx.Server.unregisterAllMatching(Server.java:328) at org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:250) at org.apache.logging.log4j.core.jmx.Server.reregisterMBeansAfterReconfigure(Server.java:162) at org.apache.logging.log4j.core.jmx.Server.reregisterMBeansAfterReconfigure(Server.java:138) at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:502) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:561) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:577) at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:212) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:152) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45) at org.apache.logging.log4j.LogManager.getContext(LogManager.java:194) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getContext(AbstractLoggerAdapter.java:103) at org.apache.logging.slf4j.Log4jLoggerFactory.getContext(Log4jLoggerFactory.java:43) at org.apache.logging.log4j.spi.AbstractLoggerAdapter.getLogger(AbstractLoggerAdapter.java:42) at org.apache.logging.slf4j.Log4jLoggerFactory.getLogger(Log4jLoggerFactory.java:29) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:329) at org.slf4j.LoggerFactory.getLogger(LoggerFactory.java:349) at com.SenderUtil.(SenderUtil.java:17) at com.SAEventSender.(SASender.java:15) at com.Sender.send(Sender.java:148) at com.SenderCatalogTest.timeout(SenderCatalogTest.java:33) 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.junit.internal.runners.TestMethod.invoke(TestMethod.java:68) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:316) at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:88) at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:96) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:300) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:131) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.access$100(PowerMockJUnit47RunnerDelegateImpl.java:59) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner$TestExecutorStatement.evaluate(PowerMockJUnit47RunnerDelegateImpl.java:147) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.evaluateStatement(PowerMockJUnit47RunnerDelegateImpl.java:107) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:288) at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:86) at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:208) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:147) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:121) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:33) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:45) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:123) at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:121) at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53) at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 2016-08-19 12:49:34,182 main ERROR Could not reconfigure JMX java.lang.LinkageError: javax/management/MBeanServer at org.apache.logging.log4j.core.jmx.Server.unregisterAllMatching(Server.java:328) at org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:250) at org.apache.logging.log4j.core.jmx.Server.reregisterMBeansAfterReconfigure(Server.java:162) at org.apache.logging.log4j.core.jmx.Server.reregisterMBeansAfterReconfigure(Server.java:138) at org.apache.logging.log4j.core.LoggerContext.setConfiguration(LoggerContext.java:502) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:561) at org.apache.logging.log4j.core.LoggerContext.reconfigure(LoggerContext.java:577) at org.apache.logging.log4j.core.LoggerContext.start(LoggerContext.java:212) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:152) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Log4jContextFactory.java:45) at org.apache.logging.log4j.LogManager.getContext(LogManager.java:155) at com.SenderUtil.initLogger(SenderUtil.java:64) at com.SenderUtil.(SenderUtil.java:18) at com.SAEventSender.(SASender.java:15) at com.Sender.send(Sender.java:148) at com.SenderCatalogTest.timeout(SenderCatalogTest.java:33) 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.junit.internal.runners.TestMethod.invoke(TestMethod.java:68) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:316) at org.junit.internal.runners.MethodRoadie$2.run(MethodRoadie.java:88) at org.junit.internal.runners.MethodRoadie.runBeforesThenTestThenAfters(MethodRoadie.java:96) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.executeTest(PowerMockJUnit44RunnerDelegateImpl.java:300) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTestInSuper(PowerMockJUnit47RunnerDelegateImpl.java:131) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.access$100(PowerMockJUnit47RunnerDelegateImpl.java:59) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner$TestExecutorStatement.evaluate(PowerMockJUnit47RunnerDelegateImpl.java:147) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.evaluateStatement(PowerMockJUnit47RunnerDelegateImpl.java:107) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit47RunnerDelegateImpl$PowerMockJUnit47MethodRunner.executeTest(PowerMockJUnit47RunnerDelegateImpl.java:82) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runBeforesThenTestThenAfters(PowerMockJUnit44RunnerDelegateImpl.java:288) at org.junit.internal.runners.MethodRoadie.runTest(MethodRoadie.java:86) at org.junit.internal.runners.MethodRoadie.run(MethodRoadie.java:49) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.invokeTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:208) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.runMethods(PowerMockJUnit44RunnerDelegateImpl.java:147) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$1.run(PowerMockJUnit44RunnerDelegateImpl.java:121) at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:33) at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:45) at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl.run(PowerMockJUnit44RunnerDelegateImpl.java:123) at org.powermock.modules.junit4.common.internal.impl.JUnit4TestSuiteChunkerImpl.run(JUnit4TestSuiteChunkerImpl.java:121) at org.powermock.modules.junit4.common.internal.impl.AbstractCommonPowerMockRunner.run(AbstractCommonPowerMockRunner.java:53) at org.powermock.modules.junit4.PowerMockRunner.run(PowerMockRunner.java:59) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192) 2016-08-19 12:49:34,616 pool-1-thread-1 ERROR Caught exception executing shutdown hook Shutdown callback for LoggerContext[name=6842775d] java.lang.LinkageError: javax/management/MBeanServer at org.apache.logging.log4j.core.jmx.Server.unregisterAllMatching(Server.java:328) at org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:250) at org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:237) at org.apache.logging.log4j.core.LoggerContext.stop(LoggerContext.java:295) at org.apache.logging.log4j.core.LoggerContext$1.run(LoggerContext.java:260) at org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry$RegisteredCancellable.run(DefaultShutdownCallbackRegistry.java:102) at org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry.run(DefaultShutdownCallbackRegistry.java:72) at java.lang.Thread.run(Thread.java:745) 2016-08-19 12:49:34,620 pool-1-thread-1 ERROR Caught exception executing shutdown hook Shutdown callback for LoggerContext[name=Default] java.lang.LinkageError: javax/management/MBeanServer at org.apache.logging.log4j.core.jmx.Server.unregisterAllMatching(Server.java:328) at org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:250) at org.apache.logging.log4j.core.jmx.Server.unregisterLoggerContext(Server.java:237) at org.apache.logging.log4j.core.LoggerContext.stop(LoggerContext.java:295) at org.apache.logging.log4j.core.LoggerContext$1.run(LoggerContext.java:260) at org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry$RegisteredCancellable.run(DefaultShutdownCallbackRegistry.java:102) at org.apache.logging.log4j.core.util.DefaultShutdownCallbackRegistry.run(DefaultShutdownCallbackRegistry.java:72) at java.lang.Thread.run(Thread.java:745)
下面是我的Sender类发送方法
public String send(JSONObject vent) throws IOException{ String method; int level; HttpsURLConnection conn = null; try { URL obj = new URL(url); conn = (HttpsURLConnection) obj.openConnection();// line number 81 conn.setRequestMethod(method); initializeURL(conn); .... } catch(SocketException e){ } catch(ConnectException e){ }
根据powermock文档 ，在mock构造函数中，你应该做类似的事情：
URL mockURL = PowerMockito.mock(URL.class); expectNew(File.class, url).andReturn(mockURL); replay(mockURL, File.class);
另外，请务必使用注释@PrepareForTest(Sender.class)和@RunWith(PowerMockRunner.class)
最后我能够解决它。 有些人再次遇到同样的问题。 我的代码问题是withArguments行。 我试图通过
String url =“https://www.google.co.in/”;
作为Url参数。 但实际上它是空的。
URL mockURL = PowerMockito.mock（URL.class）; PowerMockito.whenNew（URL.class）.withArguments（URL）.thenReturn（mockURL）;
如果参数相同，withArguments会尝试匹配。 在代码中我的模拟和实际对象上有相同的url参数时，我能够继续执行空指针exception