Re: Testing Output and Functionality
Eirik,
Thank you for the suggestion. I had not seen Test::Trap in my searches so
I will investigate.
Best Regards,
Jed
On Mon, Apr 23, 2012 at 11:44 PM, Eirik Berg Hanssen <
eirik-berg.hans...@allverden.no> wrote:
> On Tue, Apr 24, 2012 at 6:35 AM, Jed Lund wrote:
>
>> Hello,
>>
>> I was wondering if I could get some pointers towards a module or package
>> that would allow me to test the functionality of various elements of code
>> that I was developing while I also tested the STDERR and STDOUT output
>> from
>> that element of code? I have been hunting around CPAN for the right fit
>> but so far I have only found STDERR/STDOUT tests or functionality tests
>> not
>> a way to test both results from the same method call.
>>
>
> This sounds like a job for ... Test::Trap!
>
>
> The most basic case would be to test the output of a method that returned
>> some defined result while also capturing any warnings prompted by
>> malformed
>> input which did not cause catastrophic failure. The goal would be to
>> certify the output and the warning message from the same method call.
>>
>
>
> my $result = trap { $obj->method(@args) }; # or my @results, for list
> context
> # Possibly:
> $trap->warn_is_deeply( \@expected_warnings, "Got exactly the expected
> warnings?" );
> # ... but usually more usefully:
> $trap->stderr_like( $pattern, "Trapped stderr matches expectations" );
> # ... and you may still test $trap->stdout, $result/@result (or
> $trap->return), and whatever else, from the same call.
>
>
> Eirik
>
Re: Testing Output and Functionality
David,
Thank you for your suggestion. I haven't gone down that road yet so I will
try it.
Best Regards,
Jed
On Tue, Apr 24, 2012 at 4:07 AM, David Golden wrote:
> On Tue, Apr 24, 2012 at 12:35 AM, Jed Lund wrote:
> > I understand that this is a fairly basic question but I am stuck trying
> to
> > find the right path forward.
>
> It's not entirely basic, because you're testing an array of three
> "outputs" for each functionality test instead of just one.
>
> I'd probably use Capture::Tiny:
>
>use Capture::Tiny qw/capture/;
>
>my ($out, $err, $result) = capture { your_code_here };
># then test $out, $err, $result however you want
>
> If that's repetitive, stick it in a loop or write a function to
> abstract testing the three results against your expectations.
>
> -- David
>
Re: Testing Output and Functionality
On Tue, Apr 24, 2012 at 12:35 AM, Jed Lund wrote:
> I understand that this is a fairly basic question but I am stuck trying to
> find the right path forward.
It's not entirely basic, because you're testing an array of three
"outputs" for each functionality test instead of just one.
I'd probably use Capture::Tiny:
use Capture::Tiny qw/capture/;
my ($out, $err, $result) = capture { your_code_here };
# then test $out, $err, $result however you want
If that's repetitive, stick it in a loop or write a function to
abstract testing the three results against your expectations.
-- David
Re: Testing Output and Functionality
On Tue, Apr 24, 2012 at 6:35 AM, Jed Lund wrote:
> Hello,
>
> I was wondering if I could get some pointers towards a module or package
> that would allow me to test the functionality of various elements of code
> that I was developing while I also tested the STDERR and STDOUT output from
> that element of code? I have been hunting around CPAN for the right fit
> but so far I have only found STDERR/STDOUT tests or functionality tests not
> a way to test both results from the same method call.
>
This sounds like a job for ... Test::Trap!
The most basic case would be to test the output of a method that returned
> some defined result while also capturing any warnings prompted by malformed
> input which did not cause catastrophic failure. The goal would be to
> certify the output and the warning message from the same method call.
>
my $result = trap { $obj->method(@args) }; # or my @results, for list
context
# Possibly:
$trap->warn_is_deeply( \@expected_warnings, "Got exactly the expected
warnings?" );
# ... but usually more usefully:
$trap->stderr_like( $pattern, "Trapped stderr matches expectations" );
# ... and you may still test $trap->stdout, $result/@result (or
$trap->return), and whatever else, from the same call.
Eirik
Re: Testing Output and Functionality
Andy,
Thank you for the reply.
I did try Test::Output but I ran into a Smart::Comments incompatibility.
This is a sort of corner case to the issue I described where I am trying
to print the Smart::Comments but capture the STDOUT output for testing.
When I run the following;
use Test::Most;
use Test::Output;
use Smart::Comments '###';
stdout_is( sub{
print "Hello World\n";
### Goodby World ...
}, "Hello World\n", 'Test Hello World' );
done_testing();
I get the following error;
Can't locate object method "TELL" via package "Test::Output::Tie" at
C:/Perl/site/lib/Smart/Comments.pm line 438.
While a warn or carp statement in the same place seems to work just fine
the Smart::Comments don't. I kind of walked away at that point and started
looking somewhere else. Should I just be more persistent to fix this issue
or is there another solution?
Best Regards,
Jed
On Mon, Apr 23, 2012 at 9:53 PM, Andy Lester wrote:
>
> On Apr 23, 2012, at 11:35 PM, Jed Lund wrote:
>
> that element of code? I have been hunting around CPAN for the right fit
> but so far I have only found STDERR/STDOUT tests or functionality tests not
> a way to test both results from the same method call.
>
>
> Sounds like you're looking for Test::Output.
>
> http://search.cpan.org/dist/Test-Output/
>
> xoxo,
> Andy
>
> --
> Andy Lester => a...@petdance.com => www.petdance.com => AIM:petdance
>
>
Re: Testing Output and Functionality
On Apr 23, 2012, at 11:35 PM, Jed Lund wrote: > that element of code? I have been hunting around CPAN for the right fit > but so far I have only found STDERR/STDOUT tests or functionality tests not > a way to test both results from the same method call. Sounds like you're looking for Test::Output. http://search.cpan.org/dist/Test-Output/ xoxo, Andy -- Andy Lester => a...@petdance.com => www.petdance.com => AIM:petdance
