Re: Imposteriser produces ClassCastException when JUnit tests are run with Ant.

> Sorry to be a pain, would you mind filing an issue for this.
>
> Thanks
>
> S
>
> On 11 May 2009, at 08:26, Work wrote:
>
>> Hi All, just wasted a day on this.
>>
>> I am mocking Concrete classes using the standard
>> Imposteriser.INSTANCE.
>>
>> The tests run fine under the Eclipse IDE.
>>
>> However when the same tests are run using the Ant JUnit task they
>> fail with
>> a ClassCastException.
>>
>> The condition required to reproduce this bug is to mock a concrete
>> class (or
>> its subclass) more than
>> once over several test classes. Typically the first use of the Mock
>> class
>> succeeds, but subsequent
>> Test classes using the same mocked concrete class fail. Commenting
>> out the
>> first usage
>> will allow the second usage (which failed) to succeed.
>>
>> Debugging into the code seems to show CGLIBed instances of the
>> expected
>> class.
>>
>> The failure is in:
>>
>>    public <T> T imposterise(final Invokable mockObject, Class<T>
>> mockedType, Class<?>... ancilliaryTypes) {        if
>> (!mockedType.isInterface() && toStringMethodIsFinal(mockedType)) {
>> throw new IllegalArgumentException(mockedType.getName() + " has a
>> final
>> toString method");        }                try {
>> setConstructorsAccessible(mockedType, true);            Class<?>
>> proxyClass
>> = createProxyClass(mockedType, ancilliaryTypes);            return
>> mockedType.cast(createProxy(proxyClass, mockObject));        }
>> finally {            setConstructorsAccessible(mockedType,
>> false);        }
>> }
>>
>>
>> On this line:
>>
>>            return mockedType.cast(createProxy(proxyClass,
>> mockObject));
>> I have converted my own classes to use interfaces and removed
>> imposteriser
>> (using just interfaces with the imposteriser also fails).
>> However I am now stuck because I am also mocking 3rd part classes.
>> Any workarounds appreciated.
>>
>> P.S. I have upgraded from 2.5.1 to 2.6.o without improvement.
>>
>
> 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.
> Company registered in England & Wales. Number 03689627
>
>
>
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