我正试图像这样嘲笑一个类(感谢谷歌在测试环境中难以使用的代码设计):
GoogleAuthorizationCodeGrant googleAuthorizationCodeGrant = EasyMock.createMock(GoogleAuthorizationCodeGrant.class);
然后我正在建立一个这样的模拟方法调用:
AccessTokenResponse accessTokenResponse = new AccessTokenResponse();
EasyMock.expect(googleAuthorizationCodeGrant.execute()).andReturn(accessTokenResponse);
然而它会引发异常,因为在googleAuthorizationCodeGrant.execute()期间,它会尝试在GoogleAuthorizationCodeGrant.execute()中运行实际代码。我在这里错过了什么吗?我希望cglib代理包装这个类并覆盖它的方法什么都不做,因为我不想在模拟时实现它们。应该不需要保留任何业务逻辑,因为我正在定义各种方法调用的行为。
修改
注意 - 我认为这里存在一些混淆。抛出异常:
EasyMock.expect(googleAuthorizationCodeGrant.execute()).andReturn(accessTokenResponse)
当我将模拟放入重放模式时,因为我从未真正达到该代码。抛出异常的原因是因为GoogleAuthorizationCodeGrant的成员为null,并且在.execute()上调用了一个方法。如果我使用new运算符实例化GoogleAuthorizationCodeGrant,则该成员不会为null。但是我不明白为什么EasyMock在类上会这样工作,因为我希望它能创建一个代理来包装实现什么都不做。
这是一个堆栈跟踪:
java.lang.NullPointerException
at com.google.api.client.auth.oauth2.draft10.AccessTokenRequest.executeUnparsed(AccessTokenRequest.java:451)
at com.google.api.client.auth.oauth2.draft10.AccessTokenRequest.execute(AccessTokenRequest.java:475)
at uk.co.domain.service.google.GmailContactPollerTest.testDoPoll(GmailContactPollerTest.java:64)
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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
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)
答案 0 :(得分:1)
我不确定你是否重播了那个模拟过的实例。如果你已经这样做了并仍然得到异常,请把堆栈跟踪。