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RE: ClassCastException with generic method

by Guillaume Jeudy :: Rate this Message:

Re: [jmock-user] ClassCastException with generic method

Sorry I trimmed the wrong code from the interface on the previous email. Here's the correct interface:

public interface JAXBUnmarshaller {

<T> T unmarshal(Class<T> expectedType, String text) throws JAXBException;
}

Guillaume

From: Steve Freeman [mailto:steve@...]
Sent: Wed 5/6/2009 3:57 PM
To: user@...
Subject: Re: [jmock-user] ClassCastException with generic method

Before we go any further, you're expecting a string but the interface
says InputStream.

Is that correct?

S.

On 6 May 2009, at 20:11, Jeudy, Guillaume wrote:

> Hi,
>
> I'm trying to test a generic method. Is that possible with jmock2? I
> tried one(jaxbUnmarshaller).unmarshal(with(any(Class.class),
> with(any(String.class))) but that also fails.
>
> expectations code:
>
> this.mockContext.checking(new Expectations() {{
> one(jaxbUnmarshaller).unmarshal(with(Issue.class),
> with(any(String.class)));
> }});
>
> interface:
>
> public interface JAXBUnmarshaller {
> <T> T unmarshal(Class<T> expectedType, InputStream inputStream)
> throws JAXBException;
> }
>
> throws:
>
> java.lang.ClassCastException: java.lang.Object
> at a.b.msdmi.mdb.AJSubscriber.onMessage(AJSubscriber.java:65)
> at
> a
> .b
> .msdmi
> .mdb.AJSubscriberTest.testOnMessage_Success(AJSubscriberTest.java:41)
> 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:585)
> at org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:
> 580)
> at org.testng.internal.Invoker.invokeMethod(Invoker.java:478)
> at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:617)
> at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:885)
> at
> org
> .testng
> .internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:
> 126)
> at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:110)
> at org.testng.TestRunner.runWorkers(TestRunner.java:712)
> at org.testng.TestRunner.privateRun(TestRunner.java:582)
> at org.testng.TestRunner.run(TestRunner.java:477)
> at org.testng.SuiteRunner.runTest(SuiteRunner.java:324)
> at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:319)
> at org.testng.SuiteRunner.privateRun(SuiteRunner.java:292)
> at org.testng.SuiteRunner.run(SuiteRunner.java:198)
> at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:823)
> at org.testng.TestNG.runSuitesLocally(TestNG.java:790)
> at org.testng.TestNG.run(TestNG.java:708)
> at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:73)
> at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:124)
>
> Thanks,
> -Guillaume
>
>
> ____________________________________________________________________________________________________
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Steve Freeman
Winner of the Agile Alliance Gordon Pask award 2006

http://www.m3p.co.uk

M3P Limited.
Registered office. 2 Church Street, Burnham, Bucks, SL1 7HZ.
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