I spent 30 seconds on this scenario, so maybe it is a bit flaky, but
nevertheless it should convey the idea.
Have a look at the classes FileStreamTest, FileDirectoryTest,
DosFileDirectoryTests, and MacFileDirectoryTest. Glancing at these
classes I can say that:
- DosFileDirectoryTests tests many features of fileDirectory.
- MacFileDirectoryTest tests very few
- FileDirectoryTest has a few tests
- FileStreamTest is almost empty
I am not expert in files, but I suspect that a common "behavior" must
be shared among these 4 classes. For example, file existence, what you
write in a file is what you read afterward, ...
Assuming that these 4 classes should cover these "behaviors", I would
therefore affirm that some test classes are incomplete. Making these 4
classes cover the behavior will probably generate code duplication.
And Inheritance may be not that well adapted (again, I haven't though
a lot about it).
However, with traits the solution will be quite easy:
- Create a new trait. For example, TExistingFileTest, that defines a
method testExists. You can inspire yourself from FileDirectoryTest
- Make this test used by these 4 classes.
- The tricky think is to define the right "fixture". A fixture is the
code necessary by a test class to test the domain it is related to.
Cheers,
Alexandre
On 4 Feb 2009, at 17:54, Hilaire Fernandes wrote:
> Okay.
> I look at several papers about traits, and all the ones I saw need a
> few time to digest and
> I am also more or less in a hurry right now.
>
> About looking at the code and trying, which canonical examples can you
> suggest to look at?
>
> Hilaire
>
>
> 2009/2/4 Alexandre Bergel <[email protected]>:
>> I am not aware of such a tutorial.
>> The best is probably to use it. Note that I provided a refactoring
>> "move methods into a new traits" that may help. Just give a try and
>> ask questions :-)
>>
>> We are planning to write such tutorial, but resources (especially
>> time) are quite scarce these days (which is not necessarily a bad
>> thing by the way)
>>
>> Alexandre
>>
>>
>> On 4 Feb 2009, at 17:38, Hilaire Fernandes wrote:
>>
>>> Hi,
>>>
>>> Can someone suggest me a nice traits tutorial to quickly start with
>>> it?
>>>
>>> Thanks
>>>
>>> Hilaire
>>>
>>> --
>>> http://blog.ofset.org/hilaire
>>>
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>>>
>>
>> --
>> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
>> Alexandre Bergel http://www.bergel.eu
>> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.
>>
>>
>>
>>
>>
>>
>> _______________________________________________
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>
>
>
> --
> http://blog.ofset.org/hilaire
>
> _______________________________________________
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--
_,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:
Alexandre Bergel http://www.bergel.eu
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