[Bioperl-l] Test Suite and Test::Exception

Nathan Haigh n.haigh at sheffield.ac.uk
Tue Mar 13 09:49:43 EDT 2007


Yep, I agree with using throws_ok{}.

Another thing regarding testing, has anyone thought about having an
automated test run via cron on CVS HEAD and have the results made
available on the website?

Nath

Chris Fields wrote:
> You could add it to t/lib, which is what we do with
> Test::Simple/More.  It seems like a worthwhile addition.  I have to
> agree with one of the CPAN reviewers, though, when using it in cases
> like your example; I would use throws_ok{}, which makes sure an
> exception was thrown and checks $@ using a qr{} (just to make sure the
> exception was the expected one and not something else like a
> nonexistent file, etc.).
>
> chris
>
> On Mar 13, 2007, at 7:38 AM, Nathan Haigh wrote:
>
>> I've really started looking into tests while writing some of my own
>> modules and I've found Test::Exception pretty good at testing things you
>> would expect to die and live. I know things like this can be done with
>> an eval block, but Test::Exception is nice and tidy and provides
>> throws_ok etc to test if a certain message was thrown (using a string or
>> regex). I think it could be pretty useful for use in BioPerl tests,
>> especially if tests are to be devised to cover some of the metrics
>> provided by Devel::Cover e.g. Branch coverage.
>>
>> For a quick example: test that an error is thrown when providing an
>> inappropriate parameter to one of the bioperl-run modules (e.g.
>> Clustalw.pm).
>>
>> -- start test code --
>> #  Build a clustalw alignment factory
>> my @params = ('unknown_param_name' => 2);
>> $factory = Bio::Tools::Run::Alignment::Clustalw->new(@params);
>> dies_ok{  Bio::Tools::Run::Alignment::Clustalw->new(@params);}
>> "Correctly died when using an unknown parameter";
>> -- end test code --
>>
>> However, Test::Exception isn't installed by default. In addition, these
>> types of tests could inflate the test suit - is this, or could this be
>> an issue?
>>
>> Anywho, any thoughts on this?
>> Nath
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>> Bioperl-l at lists.open-bio.org
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>
> Christopher Fields
> Postdoctoral Researcher
> Lab of Dr. Robert Switzer
> Dept of Biochemistry
> University of Illinois Urbana-Champaign
>
>
>



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